datasheet for MIC5213
MIC5213
Micrel
MIC5213
Teeny™ SC-70 µCap Low-Dropout Regulator
Final Information
General Description
Features
The MIC5213 is a µCap 80mA linear voltage regulator in the
Teeny™ SC-70 package. Featuring half the footprint of the
standard SOT-23 package, this Teeny™ SC-70 regulator
has very low dropout voltage (typically 20mV at light loads
and 300mV at 80mA) and very low ground current (225µA at
20mA output). It also offers better than 3% initial accuracy
and includes a logic-compatible enable input.
The µCap regulator design is optimized to work with lowvalue, low-cost ceramic capacitors. The outputs typically
require only 0.47µF of output capacitance for stability.
Designed especially for hand-held, battery-powered devices,
the MIC5213 can be controlled by a CMOS or TTL compatible
logic signal. When disabled, power consumption drops nearly
to zero. If on-off control is not required, the enable pin may be
tied to the input for 3-terminal operation. The ground current
of the MIC5213 increases only slightly in dropout, further
prolonging battery life. Key MIC5213 features include current
limiting, overtemperature shutdown, and protection against
reversed battery.
The MIC5213 is available in 2.5V, 2.6V, 2.7V, 2.8V, 3.0V,
3.3V, 3.6V, and 5.0V fixed voltages. Other voltages are
available; contact Micrel for details.
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Teeny™ SC-70 package
Wide selection of output voltages
Guaranteed 80mA output
Low quiescent current
Low dropout voltage
Tight load and line regulation
Low temperature coefficient
Current and thermal limiting
Reversed input polarity protection
Zero off-mode current
Logic-controlled shutdown
Stability with low ESR ceramic capacitors
Applications
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Cellular telephones
Laptop, notebook, and palmtop computers
Battery-powered equipment
Bar code scanners
SMPS post-regulator/dc-to-dc modules
High-efficiency linear power supplies
Ordering Information
Standard
Part Number
Pb-Free
Marking
Voltage
Standard Pb-Free
Junction Temp. Range
Package
MIC5213-2.5BC5
MIC5213-2.5YC5
LAM
LAM
2.5V
–40°C to +125°C
SC-70-5
MIC5213-2.6BC5
MIC5213-2.6YC5
LAQ
LAQ
2.6V
–40°C to +125°C
SC-70-5
MIC5213-2.7BC5
MIC5213-2.7YC5
LAL
LAL
2.7V
–40°C to +125°C
SC-70-5
MIC5213-2.8BC5
MIC5213-2.8YC5
LAJ
LAJ
2.8V
–40°C to +125°C
SC-70-5
MIC5213-3.0BC5
MIC5213-3.0YC5
LAG
LAG
3.0V
–40°C to +125°C
SC-70-5
MIC5213-3.3BC5
MIC5213-3.3YC5
LAE
LAE
3.3V
–40°C to +125°C
SC-70-5
MIC5213-3.6BC5
MIC5213-3.6YC5
LAD
LAD
3.6V
–40°C to +125°C
SC-70-5
MIC5213-5.0BC5
MIC5213-5.0YC5
LAB
LAB
5.0V
–40°C to +125°C
SC-70-5
Other voltages available. Contact Micrel for details.
Typical Applications
1
2
3
5
LAx
Enable
Shutdown
4
VOUT
0.47µF
Regulator Circuit
Teeny is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000• http://www.micrel.com
August 2004
1
MIC5213
MIC5213
Micrel
Pin Configuration
GND NC
3
2
EN
1
LAx
4
5
OUT
IN
SC-70-5 (C5)
Pin Description
Pin Number
Pin Name
Pin Function
1
EN
Enable (Input): TTL/CMOS compatible control input. Logic high = enabled;
logic low or open = shutdown.
2
NC
Not internally connected.
3
GND
Ground
4
OUT
Regulator Output
5
IN
Supply Input
Absolute Maximum Ratings (Note 1)
Operating Ratings (Note 2)
Input Supply Voltage (VIN) ............................ –20V to +20V
Enable Input Voltage (VEN) ........................... –20V to +20V
Power Dissipation (PD) ............................ Internally Limited
Storage Temperature Range (TS) ............ –60°C to +150°C
Lead Temperature (Soldering, 5 sec.) ...................... 260°C
ESD, Note 3
Input Voltage (VIN) ........................................... 2.5V to 16V
Enable Input Voltage (VEN) .................................. 0V to VIN
Junction Temperature Range ................... –40°C to +125°C
Thermal Resistance (θJA)......................................... Note 4
MIC5213
2
August 2004
MIC5213
Micrel
Electrical Characteristics
VIN = VOUT + 1V; IL = 1mA; CL = 0.47µF; VEN ≥ 2.0V; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted.
Symbol
Parameter
Conditions
VO
Output Voltage Accuracy
∆VO/∆T
Output Voltage Temp. Coefficient
Note 5
∆VO/VO
Line Regulation
∆VO/VO
VIN–VO
Min
Typ
Max
Units
3
4
%
%
50
200
ppm/°C
VIN = VOUT + 1V to 16V
0.008
0.3
0.5
%
%
Load Regulation
IL = 0.1mA to 80mA, Note 6
0.08
0.3
0.5
%
%
Dropout Voltage, Note 7
IL = 100µA
20
IL = 20mA
200
IL = 50mA
250
IL = 80mA
280
600
mV
10
µA
–3
–4
mV
350
mV
mV
IQ
Quiescent Current
VEN ≤ 0.4V (shutdown)
0.01
IGND
Ground Pin Current, Note 8
IL = 100µA, VEN ≥ 2.0V (active)
180
IL = 20mA, VEN ≥ 2.0V (active)
225
IL = 50mA, VEN ≥ 2.0V (active)
850
IL = 80mA, VEN ≥ 2.0V (active)
1800
3000
µA
µA
µA
750
µA
IGNDDO
Ground Pin Current in Dropout
VIN = VOUT(nominal) – 0.5V, Note 8
200
300
µA
ILIMIT
Current Limit
VOUT = 0V
180
250
mA
∆VO/∆PD
Thermal Regulation
Note 9
0.05
Enable Input Voltage Level
Logic Low (off)
%/W
Enable Input
VIL
VIH
Logic High (on)
IIL
Enable Input Current
IIH
0.6
V
2.0
V
VIL ≤ 0.6V
0.01
1
µA
VIH ≥ 2.0V
8
50
µA
Note 1.
Exceeding the absolute maximum rating may damage the device.
Note 2.
The device is not guaranteed to function outside its operating rating.
Note 3.
Devices are ESD sensitive. Handling precautions recommended.
Note 4.
The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max), the junction-to-ambient thermal
resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using:
PD(max) = (TJ(max) – TA) ÷ θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator
will go into thermal shutdown. θJA of the SC-70-5 is 450°C/W, mounted on a PC board.
Note 5.
Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 6.
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects
are covered by the thermal regulation specification.
Note 7.
Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V
differential.
Note 8.
Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of
the load current plus the ground pin current.
Note 9.
Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line
regulation effects. Specifications are for an 80mA load pulse at VIN = 16V for t = 10ms.
August 2004
3
MIC5213
MIC5213
Micrel
Typical Characteristics
Dropout Voltage
vs. Output Current
10
CIN = 10µF
COUT = 1µF
300
IL = 80mA
200
100
0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
0.1
1
10
100
OUTPUT CURRENT (mA)
Ground Current
vs. Supply Voltage
0
0.5
0.0
10 20 30 40 50 60 70 80
OUTPUT CURRENT (mA)
0
2.5
OUTPUT VOLTAGE (V)
CIN = 10µF
COUT = 1µF
2.0
1.5
1.0
0.5
3.8
3.6
0
50
100
150
200
OUTPUT CURRENT (mA)
Output Voltage
vs. Temperature
CIN = 10µF
COUT = 1µF
3.4
3.2
3.0
2.8
2.6
3 DEVICES
HI / AVG / LO
CURVES APPLICABLE
AT 100µA AND 50mA
2.4
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
MIC5213
1
CIN = 10µF
COUT = 1µF
140
120
100
80
60
CIN = 10µF
COUT = 1µF
20
0
200
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
2.5
Ground Current
vs. Temperature
CIN = 10µF
COUT = 1µF
IL = 80mA
2.0
1.5
1.0
IL = 50mA
0.5
IL = 100µA
160
CIN = 10µF
COUT = 1µF
120
100
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
50
0
CL = 1µF
-50
-2 0
7
180
4
7
60
40
20
0
-20
-40
-60
100
Short Circuit Current
vs. Temperature
140
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
Thermal Regulation
(3.3V Version)
160
40
0
0.0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
7
∆ OUTPUT (mV)
3.0
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
3.5
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
IL = 80mA
Short Circuit Current
vs. Input Voltage
SHORT CIRCUIT CURRENT (mA)
Output Voltage
vs. Output Current
4.0
GROUND CURRENT (mA)
VIN = VOUT + 1V
LOAD (mA)
500
1.0
3.5
MIN. SUPPLY VOLTAGE (V)
1000
VOUT = 3.3V
IL = 100µA
2
3.0
IL = 50mA
1.5
IL = 100µA
3
0
2.0
1500
4.0
IL = 100µA
IL = 1mA
Ground Current
vs. Output Current
2000
0.0
Dropout
Characteristics
4
OUTPUT VOLTAGE (V)
100
1
0.01
GROUND CURRENT (µA)
DROPOUT VOLTAGE (mV)
CIN = 10µF
COUT = 1µF
0
Dropout Voltage
vs. Temperature
400
GROUND CURRENT (mA)
DROPOUT VOLTAGE (mV)
1000
2
4 6 8 10 12 14 16
TIME (ms)
Minimum Supply Voltage
vs. Temperature
IL = 1mA
VOUT = 3.3V
3.4
CIN = 10µF
COUT = 1µF
3.3
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
August 2004
MIC5213
Micrel
Load Transient
OUTPUT (mA) ∆ OUTPUT (mV)
0
COUT = 1µF
VIN = VOUT + 1
-40
100
50
0
-50
-1 0
1
2 3 4 5
TIME (ms)
6
7
100
0
-200
100
50
0
-50
-5
8
1
0
-1
6
4
August 2004
0.8
0
6
4
2
-0.2 0.0
1.0
1.0
5
80
60
1x106
100x103
0
10x103
20
IL = 50mA
CL = 1µF
VIN = VOUT + 1
1x103
40
10x100
RIPPLE VOLTAGE (dB)
FREQUENCY (Hz)
1x106
100x103
10x103
1x103
0
IL = 1mA
CL = 1µF
VIN = VOUT + 1
100x100
20
0.8
100
60
40
0.2 0.4 0.6
TIME (ms)
Ripple Voltage
vs. Frequency
80
10x100
RIPPLE VOLTAGE (dB)
FREQUENCY (Hz)
1x106
100x103
10x103
10x100
0
1x103
20
IL = 100µA
CL = 1µF
VIN = VOUT + 1
100x100
RIPPLE VOLTAGE (dB)
40
0.2 0.4 0.6
TIME (ms)
100
60
20
CL = 11µF
IL = 1mA
1
Ripple Voltage
vs. Frequency
80
15
-1
8
2
-0.2 0.0
100
5
10
TIME (ms)
2
INPUT (V)
INPUT (V)
-2
8
Ripple Voltage
vs. Frequency
0
Line Transient
CL = 1µF
IL = 1mA
∆ OUTPUT (V)
∆ OUTPUT (V)
Line Transient
3
2
COUT = 10µF
VIN = VOUT + 1
-100
100x100
OUTPUT (mA) ∆ OUTPUT (mV)
Load Transient
40
FREQUENCY (Hz)
MIC5213
MIC5213
Micrel
1
CL = 1µF
IL = 100µA
2.0
CL = 1µF
IL = 100µA
1.0
0.0
-1.0
4
2
0
-2
-0.2 0.0
1x106
100x103
1x103
100x100
1x100
0.01
10x103
IL = 100mA
0.1
Enable Characteristics
(3.3V Version)
4.0
3.0
ENABLE (V)
OUTPUT (V)
IL = 1mA
ENABLE (V)
10
IL = 100µA
10x100
OUTPUT IMPEDANCE (Ω)
100
5
4
3
2
1
0
-1
4
OUTPUT (V)
Enable Characteristics
(3.3V Version)
Output Impedance
1000
0.2 0.4 0.6
TIME (ms)
0.8
2
0
-2
-2
1.0
0
2
4
6
TIME (µs)
8
10
FREQUENCY (Hz)
Enable Voltage
vs. Temperature
CIN = 10µF
COUT = 1µF
IL = 1mA
1.25
1.00
VOFF
VON
0.75
0.50
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
MIC5213
6
40
ENABLE CURRENT (µA)
ENABLE VOLTAGE (mV)
1.50
Enable Current
vs. Temperature
CIN = 10µF
COUT = 1µF
IL = 1mA
30
20
10
VEN = 5V
VEN = 2V
0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
August 2004
MIC5213
Micrel
The actual power dissipation of the regulator circuit can be
determined using one simple equation.
PD = (VIN – VOUT) IOUT + VIN × IGND
Substituting PD(max), determined above, for PD and solving
for the operating conditions that are critical to the application
will give the maximum operating conditions for the regulator
circuit. For example, if we are operating the MIC5213-3.0BC5
at room temperature, with a minimum footprint layout, we can
determine the maximum input voltage for a set output current.
Applications Information
Input Capacitor
A 0.1µF capacitor should be placed from IN to GND if there
is more than 10 inches of wire between the input and the ac
filter capacitor or when a battery is used as the input.
Output Capacitor
Typical PNP-based regulators require an output capacitor to
prevent oscillation. The MIC5213 is ultrastable, requiring only
0.47µF of output capacitance for stability. The regulator is
stable with all types of capacitors, including the tiny, low-ESR
ceramic chip capacitors. The output capacitor value can be
increased without limit to improve transient response.
No-Load Stability
The MIC5213 will remain stable and in regulation with no load
(other than the internal voltage divider) unlike many other
voltage regulators. This is especially important in CMOS
RAM keep-alive applications.
Enable Input
The MIC5213 features nearly zero off-mode current. When
EN (enable input) is held below 0.6V, all internal circuitry is
powered off. Pulling EN high (over 2.0V) re-enables the
device and allows operation. When EN is held low, the
regulator typically draws only 10nA of current. While the logic
threshold is TTL/CMOS compatible, EN may be pulled as
high as 20V, independent of VIN.
Thermal Behavior
The MIC5213 is designed to provide 80mA of continuous
current in a very small profile package. Maximum power
dissipation can be calculated based on the output current and
the voltage drop across the part. To determine the maximum
power dissipation of the package, use the junction-to-ambient thermal resistance of the device and the following basic
equation:
PD(max) =
PD(max) =
125 − 25
450°C / W
PD(max) = 222mW
To prevent the device from entering thermal shutdown,
maximum power dissipation cannot be exceeded. Using the
output voltage of 3.0V, and an output current of 80mA, we can
determine the maximum input voltage. Ground current, maximum of 3mA for 80mA of output current, can be taken from
the “Electrical Characteristics” section of the data sheet.
222mW = (VIN – 3.0V) 80mA + VIN × 3mA
222mW = (80mA × VIN + 3mA × VIN) – 240mW
462mW = 83mA × VIN
VIN = 5.57V max.
Therefore, a 3.0V application at 80mA of output current can
accept a maximum input voltage of 5.6V in an SC-70-5
package. For a full discussion of heat sinking and thermal
effects on voltage regulators, refer to Regulator Thermals
section of Micrel’s Designing with Low-Dropout Voltage Regulators handbook.
Fixed Voltage Regulator
The MIC5213 is ideal for general-purpose voltage regulation
in any handheld device. Applications that are tight for space
can easily use the Teeny™ SC-70 regulator which occupies
half the space of a SOT-23-5 regulator. The MIC5203 offers
a smaller system solution, only requiring a small multilayer
ceramic capacitor for stability.
TJ(max) − TA
θ JA
TJ(max) is the maximum junction temperature of the die,
125°C, and TA is the maximum ambient temperature. θJA is
the junction-to-ambient thermal resistance ambient of the
regulator. The θJA of the MIC5213 is 450°C/W.
MIC5213-x.x
IN
3.6V
Li-Ion
Cell
EN
OUT
GND
VOUT
3.0V
0.47µF
Figure 1. Single-Cell Regulator
August 2004
7
MIC5213
MIC5213
Micrel
Package Information
0.65 (0.0256) BSC
1.35 (0.053) 2.40 (0.094)
1.15 (0.045) 1.80 (0.071)
2.20 (0.087)
1.80 (0.071)
DIMENSIONS:
MM (INCH)
1.00 (0.039) 1.10 (0.043)
0.80 (0.032) 0.80 (0.032)
0.10 (0.004)
0.00 (0.000)
0.30 (0.012)
0.15 (0.006)
0.18 (0.007)
0.10 (0.004)
0.30 (0.012)
0.10 (0.004)
SC-70-5 (C5)
MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 474-1000
WEB
USA
http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel, Inc.
© 2004 Micrel, Incorporated
MIC5213
8
August 2004
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