MAX5087

MAX5087
19-3964; Rev 3; 2/08
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
Features
The MAX5087 high-voltage linear regulator operates
from an input voltage of 6.5V to 45V and delivers up to
400mA of output current. The device consumes only
70µA of quiescent current with no load and 11µA in
shutdown. The device includes a SET input, that when
connected to ground, selects a preset output voltage of
3.3V (MAX5087A) or 5.0V (MAX5087B). Alternatively,
the output voltage can be adjusted from 2.5V to 11V by
simply connecting SET to the regulator’s output through
a resistive divider network. The MAX5087 also provides
an open-drain, active-low microprocessor (µP) reset
output that asserts when the regulator output drops
below the preset output voltage threshold. An external
capacitor programs the reset timeout period. Other features include an enable input, thermal shutdown, and
short-circuit protection.
The MAX5087 operates over the automotive temperature range of -40°C to +125°C and is available in a 16pin TQFN thermally enhanced package.
♦ Wide Operating Input Voltage Range (6.5V to 45V)
♦ Thermally Enhanced Package Dissipates
2.6W at TA = +70°C (16-Pin TQFN)
♦ Guaranteed 400mA Output Current
♦ 70µA Quiescent Supply Current
♦ Preset 3.3V, 5.0V, or Adjustable 2.5V to 11V
Output Voltage
♦ Remote Load Sense Capability
♦ Enable Input
♦ Integrated µP Reset Circuit with Programmable
Timeout Period
♦ Thermal and Short-Circuit Protection
♦ -40°C to +125°C Operating Temperature Range
Applications
Ordering Information
PINPACKAGE
PART
PKG
CODE
OUTPUT
VOLTAGE (V)
MAX5087AATE+
16 TQFN-EP*
T1655-2
3.3
Automotive
MAX5087BATE+
16 TQFN-EP*
T1655-2
5.0
Industrial
Note: All devices are specified over the -40°C to +125°C operating temperature range.
*EP = Exposed paddle.
+Denotes lead-free package.
Home Security/Safety
Networking
Pin Configuration
N.C.
13
N.C.
14
N.C.
15
N.C.
16
N.C.
CT
RESET
SET
TOP VIEW
12
11
10
9
MAX5087
8
GND
7
OUTSENSE
6
OUT
5
OUT
2
3
4
IN
IN
N.C.
1
EN
+
TQFN
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
MAX5087
General Description
MAX5087
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
ABSOLUTE MAXIMUM RATINGS
Continuous Power Dissipation (TA = +70°C)
16-Pin TQFN (derate 33.3mW/°C above +70°C) ......2666mW*
Thermal Resistance (Note 1)
θJA, 16-Pin TQFN ......................................................30.0°C/W
θJC, 16-Pin TQFN ...........................................................2°C/W
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
IN to GND (do not exceed package power
dissipation) .........................................................-0.3V to +50V
IN to GND (T ≤ 300ms, IOUT ≤ 250mA) ..................-0.3V to +42V
EN to GND..............................................................-0.3V to +50V
RESET, OUT, OUTSENSE to GND .........................-0.3V to +12V
IN to OUT................................................................-0.3V to +50V
CT, SET TO GND....................................................-0.3V to +35V
Short-Circuit Duration (VIN ≤ 14V) ..............................Continuous
Maximum Current into Any Pin (Except IN, OUT).............±20mA
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7 using a fourlayer board. For detailed information on thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = 14V, IOUT = 1mA, CIN = 47µF (low ESR), COUT = 15µF, VEN = 2.4V, 10kΩ from RESET to OUT, TA = TJ = -40°C to +125°C,
unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
Input Voltage Range
VIN
VIN ≥ VOUT + 1.5V
Supply Current
IQ
Measured at GND,
SET = GND
Shutdown Supply Current
ISHDN
MIN
TYP
6.5
IOUT = 0
70
IOUT = 400mA
MAX
UNITS
45.0
V
150
5300
VEN ≤ 0.4V
11
21
µA
µA
REGULATOR
Guaranteed Output Current
IOUT
VIN = 6.5V, VOUT = 5.0V
SET = GND,
5V version
Output Voltage (Note 3)
VOUT
SET = GND,
3.3V version
ΔVDO
Startup Response Time
Line Regulation
ΔVOUT /
ΔVIN
Enable Voltage
VEN
2
mA
6.5V ≤ VIN ≤ 25V,
5mA ≤ IOUT ≤ 400mA
4.87
5
5.13
6.5V ≤ VIN ≤ 45V,
5mA ≤ IOUT ≤ 100mA
4.850
5
5.150
6.5V ≤ VIN ≤ 25V,
5mA ≤ IOUT ≤ 400mA
3.208
3.3
3.392
6.5V ≤ VIN ≤ 45V,
5mA ≤ IOUT ≤ 100mA
3.208
3.3
3.392
IOUT = 5mA, adjustable range
Dropout Voltage
400
2.5
11.0
IOUT = 400mA, VOUT = 5V (Note 4)
0.9
Rising edge of VIN to VOUT,
RL = 500Ω, SET = GND (Note 5)
400
8V ≤ VIN ≤ 45V
5V version
3.3V version
VEN = high, regulator on
V
2.2
µs
-1
+1
-0.5
+0.5
2.4
VEN = low, regulator off
_______________________________________________________________________________________
V
0.4
mV/V
V
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
(VIN = 14V, IOUT = 1mA, CIN = 47µF (low ESR), COUT = 15µF, VEN = 2.4V, 10kΩ from RESET to OUT, TA = TJ = -40°C to +125°C,
unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 2)
PARAMETER
Enable Input Current
SYMBOL
IEN
CONDITIONS
MIN
TYP
VEN = 2.4V
0.35
VEN = 14V
3.4
MAX
UNITS
µA
SET Reference Voltage
VSET
1.200
1.235
1.260
V
SET Input Leakage Current
ISET
-100
+0.5
+100
nA
IOUT = 1mA to 400mA (Note 3)
0.1
0.35
Ω
IOUT = 10mA, f = 100Hz, 500mVP-P,
VOUT = 5V
70
dB
VIN < 14V (Note 6)
640
mA
175
°C
ΔVOUT /
ΔIOUT
Load Regulation
Power-Supply Rejection Ratio
Short-Circuit Current
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
PSRR
ISC
TJ(SHDN)
ΔTJ(SHDN)
25
°C
RESET Voltage Threshold
VRESET
RESET Threshold Hysteresis
VRHYST
RESET Output Low Voltage
VRL
ISINK = 1mA
0.4
V
RESET Output Leakage Current
IRH
VRESET = 5V
1
µA
89
92
94
2
% VOUT
% VOUT
RESET Output Minimum Timeout
Period
When VOUT reaches RESET threshold,
CCT = Open
15
µs
ENABLE to RESET Minimum
Timeout Period
When EN goes high, CCT = open
170
µs
Delay Comparator Threshold
(Rising)
1.196
Delay Comparator Threshold
Hysteresis
CT Charge Current
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
1.264
100
1
CT Discharge Current
1.230
2
V
mV
4
5
µA
mA
Limits at TA = -40°C are guaranteed by design.
Output voltage is tested using a pulsed load current of less than 50ms duration.
Dropout voltage is defined as (VIN - VOUT) when VOUT is 100mV below the value of VOUT for VIN = VOUT + 3V.
Startup time measured from 50% of VIN to 90% of VOUT.
Continuous short-circuit protection for VIN > 14V not guaranteed.
_______________________________________________________________________________________
3
MAX5087
ELECTRICAL CHARACTERISTICS (continued)
Typical Operating Characteristics
(VIN = VEN = 14V, CIN = 47µF (low ESR), COUT = 15µF, VOUT = 5V, SET = GND, TA = +25°C, unless otherwise specified.)
NO-LOAD SUPPLY CURRENT
vs. TEMPERATURE
4.5
4.0
IGND (μA)
3.0
2.5
2.0
1.5
1.0
IOUT = 0
0.5
10
8
6
4
2
0
-40 -25 -10 5 20 35 50 65 80 95 110 125 140
VIN (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
OUTPUT VOLTAGE
vs. TEMPERATURE
GROUND CURRENT
vs. TEMPERATURE (PULSED LOAD)
OUTPUT VOLTAGE
vs. LOAD CURRENT AND TEMPERATURE
20
25
30
35
40
45
6
MAX5087 toc04
5.20
5.15
VIN = +6.5V
5
5.10
5.25
5.20
5.00
4.95
IOUT = 400mA
3
4.85
IOUT = 50mA
5.00
IOUT = 400mA
4.85
4.80
IOUT = 5mA
4.75
5.05
4.90
IOUT = 100mA
1
4.80
IOUT = 100mA
4.95
2
4.90
IOUT = 50mA
5.10
VOUT (V)
5.05
VIN = +6.5V
5.15
4
IGND (mA)
VOUT (V)
VIN = +6.5V
-40 -25 -10 5 20 35 50 65 80 95 110 125
15
5.25
0
4.75
-40 -25 -10 5 20 35 50 65 80 95 110 125 140
-40 -25 -10 5 20 35 50 65 80 95 110 125 140
-40 -25 -10 5 20 35 50 65 80 95 110 125 140
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
DROPOUT VOLTAGE
vs. LOAD CURRENT
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
LOAD-TRANSIENT RESPONSE
1.35
1.20
MAX5087 toc09
0
MAX5087 toc07
1.50
COUT = 15μF
IOUT = 10mA
-10
IOUT = 5mA
VOUT
200mV/div
AC-COUPLED
-20
1.05
PSRR (dB)
0.90
0.75
0.60
0.45
0.30
0.15
-30
-40
-50
400mA
-60
IOUT
200mA/div
-70
5mA
VOUT = +5V
-80
0
0
50
100 150 200 250 300 350 400
IOUT (mA)
4
50
40
30
20
12
MAX5087 toc06
10
VIN = +14V
MAX5087 toc05
5
16
10
0
0
0
18
14
80
70
60
MAX5087 toc08
VOUT (V)
3.5
VIN = +45V
100
90
20
ISHDN (μA)
5.0
MAX5087 toc03
120
110
MAX5087 toc01
5.5
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX5087 toc02
OUTPUT VOLTAGE vs.
INPUT VOLTAGE
VDROPOUT (V)
MAX5087
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
0.1
1
10
100
1000
400μs/div
FREQUENCY (kHz)
_______________________________________________________________________________________
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
INPUT VOLTAGE STEP RESPONSE
STARTUP RESPONSE
MAX5087 toc10
ENABLE STARTUP RESPONSE
MAX5087 toc11
IOUT = 50mA
MAX5087 toc12
IOUT = 5mA
VOUT
AC-COUPLED
500mV/div
EN
1V/div
VOUT
2V/div
0V
0V
VOUT
2V/div
VIN
10V/div
0V
400μs/div
400μs/div
ENABLE STARTUP RESPONSE
100μs/div
ENABLE STARTUP RESPONSE
MAX5087 toc13
ENABLE STARTUP RESPONSE
MAX5087 toc14
EN
1V/div
MAX5087 toc15
EN
1V/div
0V
EN
1V/div
0V
0V
VOUT
2V/div
VOUT
2V/div
VIN = 14V
IOUT = 400mA
0V
VIN = 14V
IOUT = 0
0V
VOUT
2V/div
VIN = 45V
IOUT = 0
0V
VIN = 45V
IOUT = 400mA
0V
100μs/div
100μs/div
100μs/div
SHUTDOWN RESPONSE
GROUND CURRENT DISTRIBUTION
(TA = -40°C)
GROUND CURRENT DISTRIBUTION
(TA = +125°C)
40
150 UNITS
TESTED
35
EN
1V/div
VOUT
2V/div
30
25
20
15
25
20
15
10
10
5
5
0
20ms/div
150 UNITS
TESTED
35
30
NUMBER OF UNITS
0V
40
NUMBER OF UNITS
0V
MAX5087 toc17
MAX5087 toc16
IOUT = 5mA
MAX5087 toc18
26V
VIN
10V/div
6.5V
0
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65
63 65 66 67 68 69 70 71 72 73 74 75 76
IGND (μA)
IGND (μA)
_______________________________________________________________________________________
5
MAX5087
Typical Operating Characteristics (continued)
(VIN = VEN = 14V, CIN = 47µF (low ESR) COUT = 15µF, VOUT = 5V, SET = GND, TA = +25°C, unless otherwise specified.)
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
MAX5087
Pin Description
6
PIN
NAME
1, 12–16
N.C.
FUNCTION
2
EN
Enable Input. Drive EN high to turn on the regulator. Force EN low to place the device in shutdown mode.
3, 4
IN
Regulator Input. Supply voltage ranges from 6.5V to 45V. Bypass IN to GND with a low-ESR 47µF
electrolytic capacitor.
5, 6
OUT
7
OUTSENSE
8
GND
Ground
9
SET
Feedback Regulation Set Point. Connect SET to GND for a fixed 3.3V output (MAX5087A) or 5.0V
output (MAX5087B). Connect an external resistive divider network from OUTSENSE to SET to GND to
adjust the output voltage from 2.5V to 11V.
10
RESET
11
CT
Reset Timeout Setting Connection. A 2µA charging current is available at CT. Connect a capacitor
from CT to GND to set the reset timeout period (see the Adjustable Reset Timeout Period (CT) section).
—
EP
Exposed Paddle. Connect externally to a large ground plane to aid heat dissipation. Do not use EP as
a ground connection.
No Connection. Not internally connected.
Regulator Output. Connect at least a 15µF low-ESR capacitor from OUT to GND.
Regulator Output Feedback Point. OUTSENSE must be connected to OUT for fixed output voltage
versions. Leave OUTSENSE open for adjustable output voltage version.
Open-Drain Active-Low Reset Output. Connect a 10kΩ pullup resistor from RESET to any supply
voltage up to 11V to create a logic output.
_______________________________________________________________________________________
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
MAX5087
IN
ERROR
AMPLIFIER
MAX5087
VREF
1.235V
OUT
CONTROL LOGIC,
THERMAL SHUTDOWN,
AND
OVERCURRENT
PROTECTION
OUTSENSE
MUX
EN
INTERNAL
SUPPLY VOLTAGE
SET
2μA
CT
DELAY
COMPARATOR
CT
COMPARATOR
RESET
0.92 x VREF
GND
Figure 1. Functional Diagram
_______________________________________________________________________________________
7
MAX5087
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
Detailed Description
The MAX5087 high-voltage linear regulator includes an
integrated µP reset circuit with an adjustable reset timeout period (see the Adjustable Reset Timeout Period
(CT) section). The device guarantees a 400mA load
current and is available with a preset output voltage of
3.3V (MAX5087A) or 5V (MAX5087B). Both devices can
be configured to provide an adjustable output voltage
from 2.5V to 11V. The internal reset circuit monitors the
regulator output voltage and asserts RESET low when the
regulator output falls below the reset threshold voltage.
Other features include an enable (regulator control input),
21µA (max) shutdown current, short-circuit protection
(see the Output Short-Circuit Current Limit section), and
thermal shutdown (see the Thermal Protection section).
Regulator
The MAX5087 accepts an input voltage range from
6.5V to 45V and offers a fixed output voltage of 3.3V or
5V. For an adjustable output voltage operation, use an
external resistive divider network connected between
OUT, SET, and GND (see Figure 2).
Enable Input (EN)
EN is a logic-level enable input that turns the device
on/off. Drive EN high to turn on the device and drive EN
low to place the device in shutdown. The MAX5087
draws 11µA (typ) of supply current when in shutdown.
EN withstands voltages up to +45V, allowing EN to be
connected to IN for an always-on operation.
Remote Sensing (OUTSENSE)
The 3.3V (MAX5087A) and 5V (MAX5087B) output voltage versions connect OUTSENSE for load voltage
sensing. Leave OUTSENSE open when using
adjustable output voltage version.
Reset Output (RESET)
A supervisor circuit is fully integrated in the MAX5087
and uses the same reference voltage as the regulator.
RESET goes low if VOUT drops below the preset output
voltage threshold, and remains low at least for the timeout period after VOUT rises above the reset voltage
threshold.
Adjustable Reset Timeout Period (CT)
The MAX5087 features a user-adjustable reset timeout.
Connect a capacitor from CT to GND to set the reset
8
6.5V TO 45V
2.5V TO 11V
OUT
IN
15μF
47μF
R1
MAX5087
ON
EN
OFF
TO μP
OUTSENSE
RESET
SET
CT
CCT
GND
R2
VOUT = VSET (1 + R1 / R2)
VSET = 1.235V
Figure 2. Setting the Adjustable Output Voltage
timeout period (see Figure 2) and use the following
equation to calculate the timeout period:
tRP = CCT x 0.6175 x 106 (s)
where CCT is the value of the external capacitor connected from CT to GND.
Thermal Protection
When the junction temperature exceeds TJ = +175°C,
an internal thermal sensor signals the shutdown logic,
which turns off the pass transistor, allowing the IC to
cool. The thermal sensor turns the pass transistor on
again after the IC’s junction temperature cools by 25°C,
resulting in a cycled output during continuous thermaloverload conditions. Thermal protection protects the
MAX5087 in the event of fault conditions. During continuous operation, do not exceed the absolute maximum
junction temperature rating of TJ = +150°C.
Output Short-Circuit Current Limit
The MAX5087 features a current limit. The output can
be shorted to GND for an indefinite period of time (for
VIN < 14V) without damage to the device. Continuous
output short-circuit protection is only guaranteed for
VIN < 14V.
_______________________________________________________________________________________
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
Output-Voltage Selection
MAX5087 fig03
4.0
3.5
3.0
2.5
PD (W)
The MAX5087 features a Dual ModeTM operation, in
either a preset-voltage mode or an adjustable mode. In
preset-voltage mode, internal feedback resistors set
the MAX5087’s output voltage to +3.3V or +5V. Select
preset-voltage mode by connecting SET to ground. In
adjustable mode, select an output between +2.5V and
+11V using two external resistors connected as a voltage-divider to SET (Figure 2). Set the output voltage
using the following equation:
MAX5087
Applications Information
2.666W
(16-PIN TQFN)
2.0
1.5
DERATE
33.3mW/°C
1.0
0.5
R1 ⎞
⎛
VOUT = VSET x ⎜1 +
⎟
⎝
R2 ⎠
0
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
where VSET = 1.235V and R2 is chosen to be < 100kΩ.
Available Output-Current Calculation
The MAX5087 high-voltage regulator provides up to
400mA of output current. The input voltage extends to
+45V. Package power dissipation limits the amount of
output current available for a given input/output voltage
and ambient temperature. Figure 3 shows the maximum power dissipation curve for these devices. The
graph assumes that the exposed paddle of the MAX5087
package is set up per JEDEC 51 (multilayer board)
specifications.
Use Figure 3 to determine the allowable package dissipation (P D ) for a given ambient temperature.
Alternately, use the following formulas to calculate the
allowable package dissipation. Note that for the examples shown below, the electrical characteristic limits are
guaranteed up to TJ = +125°C (max).
⎧2.666W for TA ≤ + 70°C
⎫
⎪
⎪
PD = ⎨
⎬
W
⎪2.666W − 0.0333 °C x (TA − 70°C) for + 70°C < TA ≤ + 125°C⎪
⎩
⎭
Figure 3. Calculated Maximum Power Dissipation vs.
Temperature
The above equations do not include the negligible
power dissipation from self-heating due to the IC
ground current.
Example 1:
TA = +95°C
VIN = +14V
VOUT = +5V
Find the maximum allowable output current. First calculate package dissipation at the given temperature as
follows:
PD = 2.666W − 0.0333
Then determine the maximum output current:
IOUT(MAX) =
After determining the allowable package dissipation
calculate the maximum output current using the following formula:
IOUT(MAX) ≅
PD
≤ 400mA
VIN − VOUT
W
(95°C − 70°C) = 1.8335W
°C
(1.8335W)
= 203mA
(14V) − (5V)
Example 2:
TA = +125°C
VIN = +14V
VOUT = +5V
Dual Mode is a trademark of Maxim Integrated Products, Inc.
_______________________________________________________________________________________
9
0.50
PD = 2.666W − 0.0333
W
(125°C − 70°C) = 0.8345W
°C
And establish the maximum current:
IOUT(MAX) =
(1.191W)
= 92.7mA
(14V) − (5V)
0.40
TA = +70°C
TA = +85°C
TA = +125°C
0.35
0.30
0.25
0.20
0.15
0.10
Example 3:
TA = +50°C
0.05
0
VIN = +14V
0
VOUT = +10V
Calculate package dissipation at the given temperature
as follows:
PD = 2.666W
And find the maximum output current:
(2.666W)
IOUT(MAX) =
= 666mA ⇒ IOUT(MAX) = 400mA
(14V) − (10V)
In example 3 the maximum output current is calculated
as 666mA, however, the maximum output current cannot exceed 400mA.
Use Figure 4 to quickly determine maximum allowable output current for selected ambient temperatures.
Output-Capacitor Selection and
Regulator Stability
For stable operation over the full temperature range
and with load currents up to 400mA, use a 15µF (min)
output capacitor with an ESR < 0.25Ω. To reduce noise
and improve load-transient response, stability, and
power-supply rejection use larger output capacitor values such as 22µF.
10
VOUT = +5V
0.45
MAX5087 fig04
Calculate package dissipation at the given temperature
as follows:
IOUT(MAX) (A)
MAX5087
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
5
10
15
20
25
30
35
40
45
VIN (V)
Figure 4. Maximum Output Current vs. Input Voltage (16-Pin
TQFN)
Some ceramic capacitor dielectrics exhibit large
capacitance and ESR variation with temperature. For
capacitor dielectrics such as Y5V, use 22µF or more to
ensure stability at temperatures below -10°C. With X7R
or X5R dielectrics, 15µF should be sufficient at all operating temperatures. To improve power supply rejection
and transient response, use a minimum 47µF low-ESR
capacitor from IN to GND.
Chip Information
PROCESS: BiCMOS
______________________________________________________________________________________
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
QFN THIN.EPS
______________________________________________________________________________________
11
MAX5087
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
MAX5087
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
12
______________________________________________________________________________________
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
REVISION
NUMBER
REVISION
DATE
0
2/06
Initial release
1
4/06
Updated Ordering Information and Electrical Characteristics tables.
2
7/06
Updated Electrical Characteristics table.
3
2/08
Corrected errors in data sheet, reduced operating range, and removed
products from Ordering Information table.
DESCRIPTION
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Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13
© 2008 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
MAX5087
Revision History
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