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TPS7A37 Datasheet(PDF) 5 Page - Texas Instruments

No. de pieza TPS7A37
Descripción Electrónicos  High-Accuracy, 1-A, Low-Dropout Regulator With Reverse Current Protection
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

TPS7A37 Datasheet(HTML) 5 Page - Texas Instruments

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TPS7A37
www.ti.com
SBVS220B – MARCH 2013 – REVISED AUGUST 2015
6.5 Electrical Characteristics
Over operating temperature range (TJ = –40°C to 125°C), VIN = VOUT(nom) + 1 V
(1), I
OUT = 10 mA, VEN = 2.2 V, and COUT = 2.2
μF, unless otherwise noted. Typical values are at TJ = 25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN
Input voltage range(1)(2)
2.2
5.5
V
VFB
Internal reference
TJ = 25°C
1.192
1.204
1.216
V
Output voltage range
TPS7A3701(3)
VFB
5.5 – VDO
V
Nominal
TJ = 25°C
0.23%
VOUT
over VIN, IOUT,
Accuracy(1) , (4)
VOUT + 0.5 V ≤ VIN ≤ 5.5 V;
and TJ= –40°C to
–1%
+1.0%
10 mA
≤ IOUT ≤ 1 A
125°C
ΔVO(ΔVI)
Line regulation(1)
VOUT(nom) + 0.5 V ≤ VIN ≤ 5.5 V
0.01
0.03
%/V
0.25%
0.35%
0.1 mA
≤ IOUT ≤ 300 mA
ΔVO(ΔIO)
Load regulation
3
5
mV
10 mA
≤ IOUT ≤ 1 A
0.5%
Dropout voltage(5)
VDO
IOUT = 1 A
130
200
mV
(VIN = VOUT(nom) – 0.1 V)
ZO(DO)
Output impedance in dropout
2.2 V
≤ VIN ≤ VOUT + VDO
0.25
ICL
Output current limit
VOUT = 0.9 × VOUT(nom)
1.05
1.6
2.2
A
ISC
Short-circuit current
VOUT = 0 V
450
mA
IREV
Reverse leakage current(6) (–IIN)
VEN ≤ 0.5 V, 0 V ≤ VIN ≤ VOUT
0.1
μA
IOUT = 10 mA (IQ)
400
IGND
GND pin current
μA
IOUT = 1 A
1300
ISHDN
Shutdown current (IGND)
VEN ≤ 0.5 V, VOUT ≤ VIN ≤ 5.5 V
20
nA
IFB
FB pin current
TPS7A3701
0.1
0.6
μA
f = 100 Hz, IOUT = 1 A
58
Power-supply rejection ratio (ripple
PSRR
dB
rejection)
f = 10 kHz, IOUT = 1 A
37
Output noise voltage
VN
COUT = 10 μF
27 × VOUT
μVRMS
BW = 10 Hz to 100 kHz
tSTR
Startup time
VOUT = 3 V, RL = 30 Ω, COUT = 1 μF
600
μs
VEN(HI)
EN pin high (enabled)
1.7
VIN
V
VEN(LO)
EN pin low (shutdown)
0
0.5
V
IEN(HI)
EN pin current (enabled)
VEN = 5.5 V
20
nA
Shutdown, temperature increasing
160
TSD
Thermal shutdown temperature
°C
Reset, temperature decreasing
140
TJ
Operating junction temperature
–40
125
°C
(1)
Minimum VIN = VOUT + VDO or 2.2 V, whichever is greater.
(2)
For VOUT(nom) < 1.6 V, when VIN ≤ 1.6 V, the output will lock to VIN and may result in an over-voltage condition on the output. To avoid
this situation, disable the device before powering down VIN.
(3)
TPS7A3701 is tested at VOUT = 1.2 V.
(4)
Tolerance of external resistors not included in this specification.
(5)
VDO is not measured for fixed output versions with VOUT(nom) < 2.3 V since minimum VIN = 2.2 V.
(6)
Fixed-voltage versions only; refer to the Application Information section for more information.
Copyright © 2013–2015, Texas Instruments Incorporated
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