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TPS73733QDRBRQ1 Fiches technique(PDF) 3 Page - Texas Instruments

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No de pièce TPS73733QDRBRQ1
Description  1-A LOW-DROPOUT REGULATOR WITH REVERSE CURRENT PROTECTION
Download  19 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS73733QDRBRQ1 Fiches technique(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS73719-Q1
TPS73733-Q1
www.ti.com ........................................................................................................................................................................................... SBVS123 – DECEMBER 2008
over operating temperature range (TJ = –40°C to 125°C), VIN = (VOUT(nom) + 1.0 V)
(1), I
OUT = 10 mA, VEN = 2.2 V, 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 (TPS73701)
TJ = 25°C
1.192
1.2
1.216
V
Output voltage range (TPS73701)(3)
VFB
5.5 – VDO
V
Nominal
TJ = 25°C
–1.0
+1.0
5.36 V < VIN < 5.5 V, VOUT = 5.08 V,
10 mA < IOUT < 800 mA,
–2.0
+2.0
VOUT
Accuracy(1),(4)
–40°C < TJ < 85°C, TPS73701
%
Over VIN,
VOUT + 0.5 V ≤ VIN ≤ 5.5 V,
IOUT, and
–3.0
±0.5
+3.0
10 mA
≤ IOUT ≤ 1 A
temperature
ΔVOUT%/
Line regulation(1)
VOUT(nom) + 0.5 V ≤ VIN ≤ 5.5 V
0.01
%/V
ΔVIN
1 mA
≤ IOUT ≤ 1 A
0.002
ΔVOUT%/
Load regulation
%/mA
ΔIOUT
10 mA
≤ IOUT ≤ 1 A
0.0005
Dropout voltage(5)
VDO
IOUT = 1 A
130
500
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 (TPS73701)
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
µV
RMS
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 2.2V, 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 overvoltage condition on the output. To avoid
this situation, disable the device before powering down VIN.
(3)
TPS73701 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, because minimum VIN = 2.2 V.
(6)
Fixed-voltage versions only; see the Applications section for more information.
Copyright © 2008, Texas Instruments Incorporated
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