ST715C50R [STMICROELECTRONICS]
High input voltage, 85 mA LDO linear regulator;型号: | ST715C50R |
厂家: | ST |
描述: | High input voltage, 85 mA LDO linear regulator |
文件: | 总24页 (文件大小:604K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
ST715
High input voltage, 85 mA LDO linear regulator
Datasheet
- production data
Applications
•
•
•
Mobile phones
Personal digital assistant (PDAs)
Cordless phones and similar battery-powered
systems
SOT23-5L
DFN8 (3x3 mm)
Description
The ST715 is a high voltage, ultra low quiescent
current and low drop linear regulator capable of
providing an output current in excess of 85 mA.
SOT323-5L
The device operates over an input voltage range
from 2.5 V to 24 V, and it is 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 ST715 an ideal solution for low
power industrial applications. The ST715 is
available in SOT23-5, SOT323-5L or DFN8 (3x3
mm) 8 leads.
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 voltages available on request: from
1.2 V to 5.0 V with 100 mV step and adjustable
•
Compatible with ceramic output capacitors
from 0.47 µF to 10 µF
•
•
Internal current limit
Packages: SOT23-5L, SOT323-5L and DFN8
(3x3 mm)
•
Temperature range: from -40 °C to 125 °C
Table 1. Device summary
Order codes
Output voltage
SOT23-5L
Marking
SOT323-5L
Marking
DFN8 (3x3 mm)
Marking
ST715MR
ST715M25R
ST715M33R
71AD
7125
7133
ST715CR
7AD
ST715PUR
ST715PU25R
ST715PU33R
715AD
71525
71533
ADJ
2.5 V
3.3 V
5.0 V
ST715C33R
ST715C50R
733
750
October 2020
DocID14414 Rev 15
1/24
This is information on a product in full production.
www.st.com
Contents
ST715
Contents
1
2
3
4
5
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Output voltage selection for adjustable version . . . . . . . . . . . . . . . . . . 8
5.1
5.2
External capacitor requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power dissipation and junction temperature . . . . . . . . . . . . . . . . . . . . . . . 8
6
Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7
8
9
10
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ST715
Diagram
1
Diagram
Figure 1. Block diagram (fixed version)
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Figure 2. Block diagram (adjustable version)
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DocID14414 Rev 15
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24
Pin configuration
ST715
2
Pin configuration
Figure 3. Pin connection (top view)
SOT23-5L/SOT323-5L
DFN8 (3x3)
Table 2. Pin description (DFN8 3x3 mm)
Pin for
adjustable
Symbol
Pin for fixed
Name and function
IN
NC
1
1
Input voltage
2, 3, 5, 6, 7
2, 3, 6, 7
Not internally connected
Common ground
GND
FB
4
4
-
8
5
8
Feedback pin
OUT
Output voltage
Exp pad
Exp pad
Leave floating or connect to GND
Table 3. Pin description (SOT23-5L/SOT323-5L)
Pin for
adjustable
Symbol
Pin for fixed
Name and function
IN
NC
4
1, 3
2
4
3
2
1
5
Input voltage
Not internally connected
Common ground
Feedback pin
GND
FB
-
OUT
5
Output voltage
4/24
DocID14414 Rev 15
ST715
Maximum ratings
3
Maximum ratings
Table 4. Absolute maximum ratings
Parameter
Symbol
Value
Unit
VIN
VOUT
FB
DC input voltage
DC output voltage
Feedback pin
From -0.3 to 26
From -0.3 to VIN+0.3
4
V
V
V
According to package
power dissipation
IOUT
Continuous output current
A
Maximum power dissipation, DFN package
2
(1)
PD
W
Maximum power dissipation, SOT23-5L and
SOT323-5L packages
0.45
TSTG
TOP
Storage temperature range
-65 to 150
-40 to 125
°C
°C
Operating junction temperature range
1.
P is based on an operating temperature of 25 °C or less. It must be derated according to the operating temperature.
D
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these conditions is not implied.
Table 5. Thermal data
Symbol
RthJA
Parameter
SOT23-5L
SOT323-5L
DFN8
Unit
Thermal resistance junction-ambient
195
245
52
°C/W
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24
Electrical characteristics
ST715
4
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. Electrical characteristics - adjustable version
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VIN
Operating input voltage IOUT = 85 mA
2.5
24
85
V
IOUT
Output current
VFB accuracy(1)
VIN = 2.5 to 6 V, TJ = -40 °C to 125 °C
mA
VIN = VOUT + 1 to 24 V,
IOUT = 1 mA to 30 mA,
TJ = 0 °C to 85 °C
1.195
1.152
1.245
VFB
V
V
IN = VOUT + 1 to 24 V,
IOUT = 1 mA to 85 mA,
TJ = -40 °C to 125 °C
1.248
0.004
V
IN = VOUT+1 to 24 V, IOUT = 1 mA,
TJ = -40 °C to 125 °C
OUT = 1 mA to 85 mA,
∆VOUT Line regulation
∆VOUT Load regulation
0.001
0.002
%/V
I
0.004 %/mA
TJ = -40 °C to 125 °C
200 Hz to 100 kHz, IOUT = 50 mA,
eN
Output noise voltage (2)
95
µVRMS
COUT = 10 µF, TJ = -40 °C to 125 °C,
VOUT = 1.2 V
VIN = VOUTNOM+1 V+/-
VRIPPLE, VRIPPLE = 0.2 V,
IOUT = 1 mA, COUT = 10 µF
f = 1 kHz
45
62
SVR
Supply voltage rejection
Quiescent current
dB
TJ = -40 °C to 125 °C
f = 100 kHz
IOUT = 0 mA to 85 mA,
TJ = -40 °C to 125 °C
5.5
6.5
IQ
µA
I
OUT = 0 mA to 85 mA, VIN = 24 V
TJ = -40 °C to 125 °C
VOUT = 0, TJ = -40 °C to 125 °C
VIN = 3.8 V
ISC
Short-circuit current
Turn-on time (3)
120
mA
VIN = 4.2 V, COUT = 10 µF, IOUT = 60 mA,
TJ = -40 °C to 125 °C
TON
0.7
ms
µF
COUT Output capacitor
Capacitance f = 100 kHz
0.47
1. For V
< 2 V, V = 2.5 V.
IN
OUT(NOM)
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.
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ST715
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. Electrical characteristics - fixed version
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VOUT
+VDROP
VIN
Operating input voltage IOUT = 85 mA, TJ = -40 °C to 125 °C
24
85
+5
V
mA
%
IOUT
Output current
VIN = 4.3 to 24 V, TJ = -40 °C to 125 °C
0
VIN = VOUT+1 to 24 V, IOUT = 0 to 85 mA,
TJ = -40 °C to 125 °C
VOUT VOUT total accuracy (1)
-5
VIN = 4.3 to 24 V, IOUT = 1 mA,
TJ = -40 °C to 125 °C
∆VOUT Line regulation
0.001 0.004
%/V
IOUT =100 µA to 85 mA,
TJ = -40 °C to 125 °C
∆VOUT Load regulation
0.002 0.003 %/mA
VDROP Dropout voltage(2)
IOUT = 85 mA, TJ= -40 °C to 125 °C
200 Hz to 100 kHz, IOUT = 50 mA,
500
38
1000
mV
eN
Output noise voltage(3)
210 µVRMS
COUT= 10 µF, TJ = -40 °C to 125 °C
VIN = VOUTNOM+1 V+/-
VRIPPLE, VRIPPLE = 0.2 V,
IOUT = 1 mA, COUT = 10 µF
f = 1 kHz
SVR Supply voltage rejection
dB
TJ = -40 °C to 125 °C
f = 100 kHz
57
3.75
4.15
5.5
µA
6.5
I
OUT=0 mA to 85 mA,
IQ
Quiescent current
TJ = -40 °C to 125 °C
VIN=24 V
ISC
Short-circuit current
Turn-on time (4)
VOUT = 0, TJ =-40 °C to 125 °C VIN = 3.8 V
120
mA
ms
µF
VIN = 4.2 V, COUT = 10 µF, IOUT = 60 mA,
TJ = -40 °C to 125 °C
TON
0.7
COUT Output capacitor
Capacitance f = 100 kHz
0.47
1. For V
< 2 V, V = 2.5 V.
IN
OUT(NOM)
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 to 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.
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24
Output voltage selection for adjustable version
ST715
5
Output voltage selection for adjustable version
The ST715 features an adjustable output voltage due to two external resistors connected as
a voltage divider to the FB pin as shown in Figure 4. The output voltage is set by the
following equation:
Equation 1
VOUT = VFB (1 + R1/R2)
where typically VFB = 1.2 V. Choose R2 ≥ 5 kΩ to optimize the quiescent current, accuracy,
and high-frequency power supply rejection. The resistor selection is given by the following
equation:
Equation 2
R1 = R2 x (VOUT/VFB - 1)
5.1
External capacitor requirements
A 0.1 µF or a larger input bypass capacitor, connected between IN and GND and located
close to the device, is recommended. In this manner, the transient response and noise
rejection of the power supply, as a whole, improve. A higher value of the input capacitor may
be necessary if large, fast-rise-time load transients are present in the application and if the
device is several inches far from the power source.
The ST715 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, stabilizes this loop.
5.2
Power dissipation and junction temperature
For a reliable operation, junction temperature should not exceed 125 °C. This limits the
power dissipation the regulator can handle in any application. To guarantee that the junction
temperature is within acceptable limits, calculate the maximum allowable dissipation,
PD(max), and the dissipation, PD, which must be less than or equal to PD(max)
.
The maximum power dissipation limit is given by 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
The regulator dissipation is calculated by the following equation:
8/24
DocID14414 Rev 15
ST715
Output voltage selection for adjustable version
Equation 4
PD = (VIN - VOUT) x IOUT
Power dissipation coming from quiescent current is negligible.
The ST715 features the internal current limit. During normal operation, it limits the output
current to approximately 350 mA. When the current limit engages, the output voltage scales
back linearly until the overcurrent condition ends. Do not exceed the power dissipation
ratings of the package.
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24
Typical application
ST715
6
Typical application
Figure 4. Application circuit for fixed version
Figure 5. Application circuit for adjustable version
10/24
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ST715
Typical performance characteristics
7
Typical performance characteristics
Figure 6. Output voltage vs. temperature
Figure 7. Output voltage vs. input voltage
3.5
3.45
3.4
3.5
3
IOUT=1mA
IOUT=85mA
2.5
2
3.35
3.3
1.5
1
3.25
3.2
0.5
VIN=VOUT(NOM)+1V
VIN=VOUT(NOM)+1V
0
3.15
-50
0
50
100
150
0
1
2
3
4
5
6
Temp [°C]
VIN [V]
Figure 8. Dropout voltage vs. output current
Figure 9. COUT stability region
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600
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Figure 10. Supply voltage rejection vs.
frequency
Output noise voltage vs. frequency
60
700
600
500
400
300
200
100
55
50
45
40
35
30
IOUT=1mA, VRIPPLE=0.2VPP, VOUT=1.2V
IOUT=50mA, VIN=2.5V, VOUT=1.2V
0
1000
10000
100000
100
1000
10000
Freq [Hz]
100000
Freq [Hz]
DocID14414 Rev 15
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24
Typical performance characteristics
ST715
Figure 11. Quiescent current vs. input voltage
Figure 12. Load transient
5
4
3
2
1
VIN=VINH, IOUT=1mA, VOUT=3.3V
0
0
5
10
15
20
25
VIN [V]
C
=C
IN
t =t =5µS
=1µF, V =V =24V I
=from 1mA to 85mA
OUT
EN
IN
OUT
R
F
Figure 13. Line transient
Figure 14. Enable transient
C
=1µF; V =V =from 4.3 to 22V; I
IN
=1mA; t =t =5µs
F
C
= C
=1µF, V =V =0 to 4.3V, I
EN
=1mA
OUT
EN
OUT
R
IN
OUT
IN
OUT
12/24
DocID14414 Rev 15
ST715
Package mechanical data
8
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.
Figure 15. SOT23-5L drawing
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DocID14414 Rev 15
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24
Package mechanical data
ST715
Table 8. SOT23-5L mechanical data
mm
Dim.
Min.
Typ.
Max.
A
A1
A2
b
0.90
0
1.45
0.15
1.30
0.50
0.20
0.90
0.30
2.09
c
D
E
2.95
1.60
0.95
2.80
e
H
L
0.30
0
0.60
8
q
Figure 16. SOT23-5L recommended footprint (dimensions in mm)
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14/24
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ST715
Package mechanical data
Figure 17. SOT323-5L drawing
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DocID14414 Rev 15
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24
Package mechanical data
ST715
Table 9. SOT323-5L mechanical data
mm
Dim.
Min.
Typ.
Max.
A
A1
A2
b
0.80
0
1.10
0.10
1
0.80
0.15
0.10
1.80
1.80
1.15
0.90
0.30
0.22
2.20
2.40
1.35
c
D
2
E
2.10
1.25
0.65
1.30
0.36
E1
e
e1
L
0.26
0.46
<
0°
8°
16/24
DocID14414 Rev 15
ST715
Package mechanical data
Figure 18. DFN8 (3x3 mm) drawing
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DocID14414 Rev 15
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24
Package mechanical data
ST715
Table 10. DFN8 (3x3 mm) mechanical data
mm
Dim.
Min.
Typ.
Max.
A
A1
A3
b
0.80
0
0.90
0.02
0.20
0.30
3
1.00
0.05
0.25
2.85
0.35
3.15
D
D2
E
1.603
2.85
1.753
3
1.853
3.15
E2
e
1.345
1.495
0.65
0.40
1.595
L
0.30
0.50
18/24
DocID14414 Rev 15
ST715
Package mechanical data
Figure 19. DFN8 (3x3 mm) recommended footprint
ꢀꢁꢂꢃꢁꢄꢅ@UZQF"@SFW$
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24
Packaging mechanical data
ST715
9
Packaging mechanical data
Figure 20. Tape and reel SOT23-5L drawing
20/24
DocID14414 Rev 15
ST715
Packaging mechanical data
Table 11. SOT23-5L tape and reel mechanical data
mm
Dim.
Min.
Typ.
Max.
A
C
180
12.8
20.2
60
13.0
13.2
D
N
T
14.4
3.33
3.27
1.47
4.1
Ao
Bo
Ko
Po
P
3.13
3.07
1.27
3.9
3.23
3.17
1.37
4.0
3.9
4.0
4.1
Table 12. SOT323-xL tape and reel mechanical data
mm
Dim.
Min.
Typ.
Max.
A
C
175
12.8
20.2
59.5
180
13
185
13.2
D
N
60
60.5
14.4
T
Ao
Bo
Ko
Po
P
2.25
3.17
1.2
3.9
3.9
4.0
4.1
4.2
4.0
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24
Packaging mechanical data
ST715
Table 13. DFN8 (3x3 mm) tape and reel mechanical data
mm
Dim.
Min.
Typ.
Max.
A
C
180
12.8
20.2
60
13.2
D
N
T
14.4
Ao
Bo
Ko
Po
P
3.3
3.3
1.1
4
8
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ST715
Revision history
10
Revision history
Table 14. Document revision history
Changes
Date
Revision
08-Feb-2008
19-Feb-2008
22-Sep-2008
26-Nov-2008
24-Mar-2010
24-Mar-2010
20-May-2010
1
2
3
4
5
6
7
Initial release.
Modified: Features on page 1
.
Modified: DFN8 (3x3 mm) mechanical data 10 on page 23
Modified: Section 5 on page 8
Modified: Table 4 on page 5
Modified: IQ max values Table 6 on page 6 and Table 7 on page 7
Modified: Table 2 and Table 4 on page 4
.
.
.
.
.
Part numbers ST715xx, ST715xx25, ST715xx33 changed to ST715.
Added package DFN8 (3 x 3 mm).
Updated the title, the features and the description in cover page.
Updated Section 1: Diagram, Section 2: Pin configuration, Section 3: Maximum
ratings, Section 4: Electrical characteristics and Section 8: Package
28-Jan-2014
8
mechanical data
.
Added Section 9: Packaging mechanical data
.
Minor text changes.
Updated Section 8: Package mechanical data
.
21-May-2014
26-Sep-2014
15-Oct-2014
9
Minor text changes.
Updated Table 2: Pin description (DFN8 3x3 mm) and Table 3: Pin description
(SOT23-5L/SOT323-5L)
.
10
11
Updated Figure 9: COUT stability region
.
Minor text changes.
Updated Table 6 on page 6 and Table 7 on page 7
.
Minor text changes.
08-Jan-2018
06-Jul-2018
06-Apr-2020
12-Oct-2020
12
13
14
15
Updated Table 6: Electrical characteristics - adjustable version.
Added new order code ST715C50R on Table 1: Device summary.
Updated Table 2: Pin description (DFN8 3x3 mm).
Added new order code ST715CR in Table 1 on the cover page.
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24
ST715
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© 2020 STMicroelectronics – All rights reserved
24/24
DocID14414 Rev 15
相关型号:
ST715PU28R
2.8V FIXED POSITIVE LDO REGULATOR, 1V DROPOUT, DSO8, 3 X 3 MM, ROHS COMPLIANT, DFN-8
STMICROELECTR
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