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TPS73725DCQG4 Datasheet(PDF) 3 Page - Texas Instruments

No. de pieza TPS73725DCQG4
Descripción Electrónicos  1A Low-Dropout Regulator with Reverse Current Protection
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS73725DCQG4 Datasheet(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS737xx
www.ti.com.................................................................................................................................................... SBVS067I – JANUARY 2006 – REVISED MARCH 2009
Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(nom) + 1.0V
(1), I
OUT = 10mA, VEN = 2.2V, and
COUT = 2.2µF, unless otherwise noted. Typical values are at TJ = +25°C.
TPS737xx
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN
Input voltage range(1),(2)
2.2
5.5
V
Internal reference
TJ = +25°C
1.198
1.2
1.210
(TPS73701-DCQ)
VFB
V
Internal reference
TJ = +25°C
1.192
1.2
1.216
(TPS73701-DRB)
Output voltage range
VFB
5.5 – VDO
V
(TPS73701)(3)
Nominal
TJ = +25°C
–1.0
+1.0
5.36V < VIN < 5.5V, VOUT = 5.08V,
VOUT
10mA < IOUT < 800mA,
–2.0
+2.0
Accuracy(1),(4)
%
–40C < TJ < +85°C, TPS73701DCQ
over VIN, IOUT,
VOUT + 0.5V ≤ VIN ≤ 5.5V;
–3.0
±0.5
+3.0
and T
10mA
≤ IOUT ≤ 1A
ΔVOUT%/ΔVIN
Line regulation(1)
VOUT(nom) + 0.5V ≤ VIN ≤ 5.5V
0.01
%/V
1mA
≤ IOUT ≤ 1A
0.002
ΔVOUT%/ΔIOUT
Load regulation
%/mA
10mA
≤ IOUT ≤ 1A
0.0005
Dropout voltage(5)
VDO
IOUT = 1A
130
500
mV
(VIN = VOUT(nom) – 0.1V)
ZO(DO)
Output impedance in dropout
2.2V
≤ 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 = 0V
450
mA
IREV
Reverse leakage current(6) (–IIN)
VEN ≤ 0.5V, 0V ≤ VIN ≤ VOUT
0.1
µA
IOUT = 10mA (IQ)
400
IGND
GND pin current
µA
IOUT = 1A
1300
ISHDN
Shutdown current (IGND)
VEN ≤ 0.5V, VOUT ≤ VIN ≤ 5.5
20
nA
IFB
FB pin current (TPS73701)
0.1
0.6
µA
f = 100Hz, IOUT = 1A
58
Power-supply rejection ratio
PSRR
dB
(ripple rejection)
f = 10kHz, IOUT = 1A
37
Output noise voltage
VN
COUT = 10µF
27 × VOUT
µV
RMS
BW = 10Hz – 100KHz
tSTR
Startup time
VOUT = 3V, RL = 30Ω, COUT = 1µF
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 = 5.5V
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) < 1.6V, when VIN ≤ 1.6V, 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)
TPS73701 is tested at VOUT = 1.2V.
(4)
Tolerance of external resistors not included in this specification.
(5)
VDO is not measured for fixed output versions with VOUT(nom) < 2.3V since minimum VIN = 2.2V.
(6)
Fixed-voltage versions only; refer to the Applications section for more information.
Copyright © 2006–2009, Texas Instruments Incorporated
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