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TPS71725DCKTG4 Datasheet(PDF) 3 Page - Texas Instruments

No. de Pieza. TPS71725DCKTG4
Descripción  Low Noise, High-Bandwidth PSRR Low-Dropout 150mA Linear Regulator
Descarga  28 Pages
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Fabricante  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS71725DCKTG4 Datasheet(HTML) 3 Page - Texas Instruments

 
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ELECTRICAL CHARACTERISTICS
TPS717xx
www.ti.com..................................................................................................................................................... SBVS068E – FEBRUARY 2006 – REVISED MAY 2008
Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.5V or 2.5V, whichever is greater;
IOUT = 0.5mA, VEN = VIN, COUT = 1.0µF, CNR = 0.01µF, unless otherwise noted. For TPS71701, VOUT = 2.8V.
Typical values are at TJ = +25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN
Input voltage range(1)
2.5
6.5
V
VFB
Internal reference (TPS71701)
0.790
0.800
0.810
V
VOUT
Output voltage range (TPS71701)
0.9
6.5 – VDO
V
Nominal
TJ = +25°C, 1.6V ≤ VIN ≤ 6.5V
–0.05
+0.06
%
VOUT
Output accuracy(1)
Over VIN, IOUT, VOUT + 0.5V ≤ VIN ≤ 6.5V
–3.0
±1.5
+3.0
%
Temp(2)
0mA
≤ IOUT ≤ 150mA
VOUT(NOM) + 0.5V ≤ VIN ≤ 6.5V,
ΔVOUT/ ΔVIN
Line regulation (1)
125
µV/V
IOUT = 5mA
ΔVOUT/ ΔIOUT
Load regulation
0mA
≤ IOUT ≤ 150mA
120
µV/mA
Dropout voltage(3)
VDO
IOUT = 150mA
170
300
mV
(VIN = VOUT(NOM) – 0.1V)
ICL (Fixed)
Output current limit (fixed output)
VOUT = 0.9 × VOUT(NOM)
200
325
500
mA
ICL
Output current limit (TPS71701)
VOUT = 0.9 × VOUT(NOM)
200
325
575
mA
(Adjustable)
IOUT = 0.1mA
50
80
µA
IGND
Ground pin current
IOUT = 150mA
100
µA
VEN ≤ 0.4V, 2.5V ≤ VIN < 4.5V,
0.20
1.5
µA
TJ = –40°C to +85°C
Shutdown current
ISHDN
(IGND)
VEN ≤ 0.4V, 4.5V ≤ VIN ≤ 6.5V,
0.90
µA
TJ = –40°C to +85°C
IFB
Feedback pin current (TPS71701)
0.02
1.0
µA
f = 100Hz
70
dB
f = 1kHz
70
dB
Power-supply rejection ratio
PSRR
VIN = 3.8V, VOUT = 2.8V,
f = 10kHz
67
dB
IOUT = 150mA
f = 100kHz
67
dB
f = 1MHz
45
dB
CNR = none
95
× V
OUT
µV
RMS
(fixed output, TPS71701)
Output noise voltage
BW = 100Hz to 100kHz,
CNR = 0.001µF
25
× V
OUT
µV
RMS
VN
VIN = 3.8V, VOUT = 2.8V,
CNR = 0.01µF
12.5
× V
OUT
µV
RMS
IOUT = 10mA
CNR = 0.1µF
11.5
× V
OUT
µV
RMS
Startup time
0.9V
≤ VOUT ≤ 1.6V, CNR = 0.001µF
0.700
ms
TSTR
VOUT = 90% VOUT(NOM),
1.6V < VOUT < VMAX, CNR = 0.01µF
0.160
ms
RL = 19Ω, COUT = 1.0µF
VIN ≤ 5.5V
1.2
6.5
V
Enable high
VEN(HI)
(enabled)
5.5V < VIN ≤ 6.5V
1.25
6.5
V
VEN(LO)
Enable low
0
0.4
V
(shutdown)
IEN(HI)
Enable pin current, enabled
EN = 6.5V
0.02
1.0
µA
Under-voltage lockout
VIN rising
2.41
2.45
2.49
V
UVLO
Hysteresis
VIN falling
150
mV
Shutdown, temperature increasing
+160
°C
TSD
Thermal shutdown temperature
Reset, temperature decreasing
+140
°C
TJ
Operating junction temperature
–40
+125
°C
(1)
Minimum VIN = VOUT + VDO or 2.5V, whichever is greater.
(2)
Does not include external resistor tolerances.
(3)
VDO is not measured for devices with VOUT(NOM) < 2.6V because minimum VIN = 2.5V.
Copyright © 2006–2008, Texas Instruments Incorporated
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