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TPS71229 Datasheet(PDF) 3 Page - Texas Instruments

Part # TPS71229
Description  Dual 250 mA Output, UltraLow Noise, High PSRR, Low-Dropout Linear Regulator
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS71229 Datasheet(HTML) 3 Page - Texas Instruments

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TPS71202, TPS71219
TPS71229, TPS71247
TPS71256, TPS71257
www.ti.com
SBVS049D – MAY 2004 – REVISED AUGUST 2010
ELECTRICAL CHARACTERISTICS
Over operating temperature range (TJ = -40°C to +125°C), VIN = highest VOUT(nom) + 1.0 V or 2.7 V (whichever is greater),
IOUT = 1 mA, VEN1, 2 = 1.2 V, COUT = 10 mF, CNR = 0.01 mF, and adjustable LDOs are tested at VOUT = 3.0 V, unless otherwise
noted. Typical values are at TJ = +25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN
Input voltage range(1)
2.7
5.5
V
VFB
Internal reference (adjustable LDOs)
1.200
1.225
1.250
V
Output voltage range
VFB
5.5 - VDO
V
(adjustable LDOs)
VOUT
Nominal
TJ = +25°C, IOUT = 0 mA
-1.5
+1.5
Accuracy(1)
%
Over VIN,
VOUT + 1.0 V ≤ VIN ≤ 5.5 V,
-3
±1
+3
IOUT, and T
0 mA ≤ IOUT ≤ 250 mA
ΔVOUT%/ΔVIN
Line regulation(1)
VOUT + 1.0 V ≤ VIN ≤ 5.5 V
0.05
%/V
ΔVOUT%/ΔIOU
Load regulation
0 mA ≤ IOUT ≤ 250 mA
0.8
%/mA
T
2.8 V,
Dropout voltage(2)
VDO
2.85 V
IOUT1 = IOUT2 = 250 mA
125
230
mV
(VIN = VOUT(nom) - 0.1V)
Adjustable
ICL
Output current limit
VOUT = 0.9 × VOUT(nom)
400
600
800
mA
One LDO
IOUT = 1 mA (enabled channel)
190
250
enabled
IGND
Ground pin current
mA
Both LDOs
IOUT1 = IOUT2 = 1 mA to 250 mA
300
600
enabled
ISHDN
Shutdown current(3)
VEN ≤ 0.4 V, 0 V ≤ VIN ≤ 5.5 V
0.3
2.0
mA
IFB
FB pin current (adjustable LDOs)
0.1
1
mA
No CNR, IOUT = 250 mA
80.0 × VOUT
Output noise voltage,
Vn
mVrms
BW = 10 Hz - 100 kHz
CNR = 0.01 mF, IOUT = 250 mA
11.8 × VOUT
f = 100 Hz, IOUT = 250 mA
65
Power-supply rejection ratio
PSRR
dB
(ripple rejection)
f = 10 kHz, IOUT = 250 mA
65
tSTR
Startup time
VOUT = 2.85 V, RL = 30Ω, CNR = 0.001 mF
60
ms
VIH
Enable threshold high (EN1, EN2)
1.2
VIN
V
VIL
Enable threshold low (EN1, EN2)
0
0.4
V
IEN
Enable pin current (EN1, EN2)
VIN = VEN = 5.5 V
-1
1
mA
Shutdown
Temp increasing
+160
TSD
Thermal shutdown temperature
°C
Reset
Temp decreasing
+140
Undervoltage lockout threshold
VIN rising
2.25
2.65
V
UVLO
Undervoltage lockout hysteresis
VIN falling
100
mV
(1)
Minimum VIN = VOUT + VDO or 2.7 V, whichever is greater.
(2)
VDO is not measured for 1.8 V regulators since minimum VIN = 2.7 V.
(3)
For the adjustable version, this applies only after VIN is applied; then VEN transitions from high to low.
Copyright © 2004–2010, Texas Instruments Incorporated
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Product Folder Link(s): TPS71202 TPS71219 TPS71229 TPS71247 TPS71256 TPS71257


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