regulyator_napryageniya_stmicroelectronics_st715m25r___korpus_sot_23_5_1185737_en.pdf

regulyator_napryageniya_stmicroelectronics_st715m25r___korpus_sot_23_5_1185737_en.pdf
ST715XX
ST715XX25, ST715XX33
High input voltage - 85 mA LDO linear regulator
Features
■
2.5 V to 24 V input voltage
■
Low dropout voltage (500 mV typ. at 85 mA)
■
Very low quiescent current (3.8 µA typ. at full
load)
■
85 mA guaranteed output current
■
Output voltage: fixed or adjustable
■
Compatible with ceramic output capacitors
from 0.47 µF to 10 µF
■
Internal current limit
■
Package DFN8 (3 x 3 mm), SOT23-5L
■
Temperature range: -40 °C to 125 °C
SOT23-5L
Applications
■
Mobile phones
■
Personal digital assistant (PDAs)
■
Cordless phones and similar battery powered
systems
DFN8 (3 x 3 mm)
The device operates over an input voltage range
spanning from 2.5 V to 24 V, and is also stable
with output ceramic capacitors. Fault condition
protection includes short-circuit current limitation.
The ultra low quiescent current of 3.8 µA at full
load makes it highly suitable for low power
applications and battery powered systems. The
wide input voltage range makes the ST715xx an
ideal solution for low power industrial applications
also. The ST715xx is available in the DFN8 (3 x 3
mm) 8 leads or the SOT23-5.
Description
The ST715xx is a high voltage, ultra low
quiescent low drop linear regulator capable of
providing an output current in excess of 85 mA.
Table 1.
Device summary
Order codes
Output voltage
SOT23-5L
ST715MR
ST715M15R
(1)
ST715M18R
(1)
ST715M25R
ST715M28R
(1)
ST715M33R
Marking
DFN8 (3 x 3 mm)
Marking
71AD
ST715PUR
7115
7118
7125
7128
7133
715AD
ADJ
ST715PU15R
(1)
71515
1.5 V
ST715PU18R
(1)
71518
1.8 V
71525
2.5 V
71528
2.8 V
71533
3.3 V
ST715PU25R
ST715PU28R
(1)
ST715PU33R
1. Available on request.
June 2010
Doc ID 14414 Rev 7
1/19
www.st.com
19
Contents
ST715XX, ST715XX25, ST715XX33
Contents
1
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Output voltage selection for adjustable version . . . . . . . . . . . . . . . . . . 8
5.1
External capacitor requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2
Power dissipation and junction temperature . . . . . . . . . . . . . . . . . . . . . . . . 8
6
Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7
Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19
Doc ID 14414 Rev 7
ST715XX, ST715XX25, ST715XX33
1
Diagram
Figure 1.
Block diagram
Diagram
Doc ID 14414 Rev 7
3/19
Pin configuration
ST715XX, ST715XX25, ST715XX33
2
Pin configuration
Figure 2.
Pin connections (top view)
DFN8 (3x3)
SOT23-5L
Table 2.
Pin description (DFN8 3x3 mm)
Symbol
Pin for fixed
Pin for adjustable
IN
1
1
NC
2, 3, 5, 6, 7,
Exp. pad
GND
4
4
Common ground
FB
-
5
Feedback pin
OUT
8
8
Output voltage
Table 3.
Name and function
Input voltage of the LDO
2, 3, 6, 7, Exp. pad Not internally connected
Pin description (SOT23-5L)
Symbol
Pin for fixed
Pin for adjustable
IN
4
4
Input voltage of the LDO
NC
1, 3
3
Not internally connected
GND
2
2
Common ground
1
Feedback pin
5
Output voltage
FB
OUT
4/19
5
Name and function
Doc ID 14414 Rev 7
ST715XX, ST715XX25, ST715XX33
Maximum ratings
3
Maximum ratings
Table 4.
Absolute maximum ratings
Symbol
VIN
Parameter
Unit
from -0.3 to 26
V
From -0.3 to VIN+0.3
V
4
V
According to package
power dissipation
A
±2
kV
DC input voltage
VOUT
DC output voltage
ADJ
Adjust pin
IOUT
Continuous output current
VESD
ESD ratings
PD
Value
Power dissipation DFN package
5
Power dissipation SOT23-5 package
1
W
TSTG
Storage temperature range
-65 to 150
°C
TOP
Operating junction temperature range
-40 to 125
°C
Note:
Absolute maximum ratings are the values beyond which damage to the device may occur.
Functional operation under these conditions is not implied.
Table 5.
Thermal data
Symbol
RthJA
Parameter
Thermal resistance junction-ambient
Doc ID 14414 Rev 7
SOT23-5L
DFN8
Unit
255
52
°C/W
5/19
Electrical characteristics
4
ST715XX, ST715XX25, ST715XX33
Electrical characteristics
TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = 0.1 µF, COUT = 1 µF, IOUT = 1 mA, unless otherwise
specified. (1)
Table 6.
Symbol
VIN
Electrical characteristics - adjustable version
Parameter
Test conditions
Min.
Operating input voltage IOUT = 85mA
2.5
VOUT
Output voltage range
1.2
IOUT
Output current
VIN=VOUT+1 to 24V, IOUT =1mA to 85mA,
TJ=-40°C to 125°C
ΔVOUT
Line regulation
VIN=VOUT+1 to 24V, IOUT=1mA,
TJ=-40°C to 125°C
ΔVOUT
Load regulation
IOUT =1mA to 85mA, TJ=-40°C to 125°C
Output noise voltage (2)
200Hz to 100kHz, IOUT = 50mA, COUT=
10µF, TJ=-40°C to 125°C, VOUT=1.2V
SVR
Unit
24
V
85
1.2
VFB accuracy (1)
eN
Max.
V
VIN=2.5 to 6V, TJ=-40°C to 125°C
Feedback voltage
VFB
Typ.
-4.0
VIN=VOUTNOM+1V+/-VRIPPLE,
f=1kHz
VRIPPLE=0.2V, IOUT = 1mA,
Supply voltage rejection C
=
10µF
OUT
TJ=-40°C to 125°C
V
4.0
%
0.001
0.004
%/V
0.002
0.004
%/mA
95
µVRMS
45
dB
f=100kHz
62
IOUT=0mA to 85mA, TJ=-40°C to 125°C
5.5
IOUT=0mA to 85mA, VIN=24V
TJ=-40°C to 125°C
6.5
IQ
Quiescent current
ISC
Short circuit current
VOUT=0, TJ=-40°C to 125°C VIN=3.8V
TON
Turn on time (3)
VIN =4.2V, COUT= 10µF, IOUT=60mA,
TJ=-40°C to 125°C
COUT
Output capacitor
Capacitance f = 100kHz
mA
µA
120
mA
0.7
0.47
ms
µF
1. For VOUT(NOM) < 2 V, VIN = 2.5 V.
2. Guaranteed by design.
3. Turn-on time is time measured between the input just exceeding 90% of its final value and the output voltage just reaching
95 % of its nominal value.
6/19
Doc ID 14414 Rev 7
ST715XX, ST715XX25, ST715XX33
Electrical characteristics
TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = 0.1 µF, COUT = 1 µF, IOUT = 1 mA, VOUT = 3.3 V
unless otherwise specified. (1)
Table 7.
Symbol
VIN
Electrical characteristics - fixed version
Parameter
Test conditions
Min.
Operating input voltage IOUT = 85mA, TJ=-40°C to 125°C
Typ.
VOUT
+VDRO
Max.
Unit
24
V
PTYP
IOUT
Output current
VIN=4.3 to 24V, TJ=-40°C to 125°C
0
85
mA
VOUT
VOUT total accuracy (1)
VIN=VOUT+1 to 24V, IOUT=0 to 85mA,
TJ=-40°C to 125°C
-5
+5
%
ΔVOUT
Line regulation
VIN=4.3 to 24V, IOUT=1mA,
TJ=-40°C to 125°C
0.001
0.004
%/V
ΔVOUT
Load regulation
IOUT =100µA to 85mA,
TJ=-40°C to 125°C
0.002
0.003
%/mA
VDROP
Drop output voltage (2)
IOUT=85mA, TJ=-40°C to 125°C
500
1000
mV
eN
Output noise voltage (3)
200Hz to 100kHz, IOUT = 50mA,
COUT= 10µF, TJ=-40°C to 125°C
210
µVRMS
SVR
VIN=VOUTNOM+1V+/-VRIPPLE,
f=1kHz
VRIPPLE=0.2V, IOUT=1mA,
Supply voltage rejection C
=
10µF
OUT
TJ=-40°C to 125°C
IOUT=0mA to 85mA,
TJ=-40°C to 125°C
38
dB
f=100kHz
IQ
Quiescent current
ISC
Short circuit current
VOUT=0, TJ=-40°C to 125°C VIN=3.8V
TON
Turn on time (4)
VIN =4.2V, COUT= 10µF, IOUT=60mA,
TJ=-40°C to 125°C
COUT
Output capacitor
Capacitance f = 100kHz
57
3.75
5.5
4.15
6.5
µA
VIN=24V
120
mA
0.7
0.47
ms
µF
1. For VOUT(NOM) < 2 V, VIN = 2.5 V.
2. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. This
specification does not apply for output voltages below 2 V.
3. Guaranteed by design.
4. Turn-on time is time measured between the input just exceeding 90 % of its final value and the output voltage just reaching
95% of its nominal value.
Doc ID 14414 Rev 7
7/19
Output voltage selection for adjustable version
5
ST715XX, ST715XX25, ST715XX33
Output voltage selection for adjustable version
The ST715xx features an adjustable output voltage using two external resistors connected
as a voltage divider to the FB pin as shown in the typical application circuit Figure 4. The
output voltage is set using the following equation:
Equation 1
VOUT = VFB (1 + R1/R2)
where typically VFB = 1.2 V. Choose R2 ≥ 5 kΩ in order to optimize quiescent current,
accuracy, and high-frequency power-supply rejection. To simplify resistor selection use the
following equation:
Equation 2
R1 = R2 x (VOUT/VFB - 1)
5.1
External capacitor requirements
A 0.1 µF or larger input bypass capacitor, connected between IN and GND and located
close to the device, is recommended to improve transient response and noise rejection of
the power supply as a whole. A higher-value input capacitor may be necessary if large, fastrise-time load transients will be present in the application and if the device is located several
inches away from the power source.
The ST715xx requires an output capacitor connected between OUT and GND to stabilize
the internal control loop. Any capacitor (including ceramic and tantalum) with a value higher
than 0.47 µF will properly stabilize this loop.
5.2
Power dissipation and junction temperature
To ensure reliable operation, worst-case junction temperature should not exceed 125 °C.
This restriction limits the power dissipation the regulator can handle in any given application.
To ensure that the junction temperature is within acceptable limits, calculate the maximum
allowable dissipation, PD(max), and the actual dissipation, PD, which must be less than or
equal to PD(max).
The maximum power dissipation limit is determined using the following equation:
Equation 3
PD(max) = (TJMAX - TA) / RthJA
where:
TJMAX is the maximum allowable junction temperature.
RthJA is the thermal resistance junction-to-ambient for the package.
TA is the ambient temperature.
8/19
Doc ID 14414 Rev 7
ST715XX, ST715XX25, ST715XX33
Output voltage selection for adjustable version
The regulator dissipation is calculated using the following equation:
Equation 4
PD = (VIN - VOUT) x IOUT
Power dissipation resulting from quiescent current is negligible.
The ST715xx features internal current limiting. During normal operation, it limits output
current to approximately 350 mA. When current limiting engages, the output voltage scales
back linearly until the overcurrent condition ends. Take care not to exceed the power
dissipation ratings of the package.
Doc ID 14414 Rev 7
9/19
Typical application
ST715XX, ST715XX25, ST715XX33
6
Typical application
Figure 3.
Application circuit for fixed version
Figure 4.
Application circuit for adjustable version
10/19
Doc ID 14414 Rev 7
ST715XX, ST715XX25, ST715XX33
Typical performance characteristics
7
Typical performance characteristics
Figure 5.
Output voltage vs. temperature
Figure 6.
3.5
3.5
IOUT=1mA
3.45
3
IOUT=85mA
2.5
VOUT [V]
3.4
VOUT [V]
Output voltage vs. input voltage
3.35
3.3
2
1.5
1
3.25
0.5
3.2
VIN=VOUT(NOM)+1V
3.15
-50
0
50
100
VIN=VOUT(NOM)+1V
0
0
150
1
Dropout voltage vs. output current Figure 8.
2.4
ESR @ 100 kHz [Ohm]
1000
VDROPOUT [V]
800
600
400
200
0
0
20
40
60
80
2.1
1.8
5
6
Supply voltage rejection vs.
frequency
COUT stability region
CIN=0.1µF, VIN=VEN=2.5 to 24V
IOUT=1mA to 0.085A
1.2
0.9
STABILITY REGION
0.6
0.3
0
0.47
100
1
4.7
COUT [µF] (nominal value)
10
Figure 10. Output noise voltage vs. frequency
60
700
55
600
50
500
nV/ Hz]
SVR [dB]
4
1.5
IOUT [A]
Figure 9.
3
VIN [V]
Temp [°C]
Figure 7.
2
45
40
400
300
200
35
IOUT=1mA, VRIPPLE=0.2VPP, VOUT=1.2V
30
100
1000
10000
100
IOUT=50mA, VIN=2.5V, VOUT=1.2V
100000
0
1000
10000
100000
Freq [Hz]
Freq [Hz]
Doc ID 14414 Rev 7
11/19
Typical performance characteristics
ST715XX, ST715XX25, ST715XX33
Figure 11. Quiescent current vs. input voltage Figure 12. Load transient
5
Iq [µA]
4
3
2
1
VIN=VINH, IOUT=1mA, VOUT=3.3V
0
0
5
10
15
20
25
VIN [V]
CIN=COUT=1µF, VEN =VIN=24V IOUT=from 1mA to 85mA
tR=tF=5µS
Figure 13. Line transient
Figure 14. Enable transient
COUT=1µF; VIN=VEN=from 4.3 to 22V; IOUT=1mA; tR=tF=5µs
CIN= COUT=1µF, VEN=VIN=0 to 4.3V, IOUT=1mA
12/19
Doc ID 14414 Rev 7
ST715XX, ST715XX25, ST715XX33
8
Package mechanical data
Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Doc ID 14414 Rev 7
13/19
Package mechanical data
ST715XX, ST715XX25, ST715XX33
SOT23-5L mechanical data
mm.
mils.
Dim.
Min.
Typ.
Max.
Min.
Typ.
Max.
A
0.90
1.45
35.4
57.1
A1
0.00
0.10
0.0
3.9
A2
0.90
1.30
35.4
51.2
b
0.35
0.50
13.7
19.7
C
0.09
0.20
3.5
7.8
D
2.80
3.00
110.2
118.1
E
1.50
1.75
59.0
68.8
e
0.95
37.4
H
2.60
3.00
102.3
118.1
L
0.10
0.60
3.9
23.6
7049676D
14/19
Doc ID 14414 Rev 7
ST715XX, ST715XX25, ST715XX33
Package mechanical data
DFN8 (3x3 mm) mechanical data
mm.
mils.
Dim.
Min.
Typ.
Max.
Min.
Typ.
Max.
0.80
0.90
1.00
31.5
35.4
39.4
A1
0.02
0.05
0.8
2.0
A3
0.20
A
7.9
b
0.25
0.30
0.35
9.8
11.8
13.8
D
2.85
3.00
3.15
112.2
118.1
124
D2
1.603
1.753
1.853
63.1
69
73
E
2.85
3.00
3.15
112.2
118.1
124
E2
1.345
1.495
1.595
53
58.9
62.8
e
L
0.65
0.30
0.40
25.6
0.50
Doc ID 14414 Rev 7
11.8
15.7
19.7
15/19
Package mechanical data
ST715XX, ST715XX25, ST715XX33
Tape & reel SOT23-xL mechanical data
mm.
inch.
Dim.
Min.
Typ.
A
Min.
Typ.
180
13.0
13.2
Max.
7.086
C
12.8
D
20.2
0.795
N
60
2.362
T
16/19
Max.
0.504
0.512
14.4
0.519
0.567
Ao
3.13
3.23
3.33
0.123
0.127
0.131
Bo
3.07
3.17
3.27
0.120
0.124
0.128
Ko
1.27
1.37
1.47
0.050
0.054
0.0.58
Po
3.9
4.0
4.1
0.153
0.157
0.161
P
3.9
4.0
4.1
0.153
0.157
0.161
Doc ID 14414 Rev 7
ST715XX, ST715XX25, ST715XX33
Package mechanical data
Tape & reel QFNxx/DFNxx (3x3) mechanical data
mm.
inch.
Dim.
Min.
Typ.
A
Max.
Min.
Typ.
180
13.2
7.087
C
12.8
D
20.2
0.795
N
60
2.362
T
0.504
0.519
14.4
0.567
Ao
3.3
0.130
Bo
3.3
0.130
Ko
1.1
0.043
Po
4
0.157
P
8
0.315
Doc ID 14414 Rev 7
Max.
17/19
Revision history
ST715XX, ST715XX25, ST715XX33
9
Revision history
Table 8.
Document revision history
Date
Revision
08-Feb-2008
1
Initial release.
19-Feb-2008
2
Modified: Features on page 1.
22-Sep-2008
3
Modified: DFN8 (3x3 mm) mechanical data on page 15.
26-Nov-2008
4
Modified: Section 5 on page 8.
24-Mar-2010
5
Modified: Table 4 on page 5.
20-May-2010
6
Modified: IQ max values Table 6 on page 6 and Table 7 on page 7.
24-Jun-2010
7
Modified: Table 2 and Table 3 on page 4.
18/19
Changes
Doc ID 14414 Rev 7
ST715XX, ST715XX25, ST715XX33
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Doc ID 14414 Rev 7
19/19
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