Datasheet

TPS71202, TPS71219
TPS71229, TPS71247
TPS71256, TPS71257
www.ti.com SBVS049D –MAY 2004–REVISED AUGUST 2010
ELECTRICAL CHARACTERISTICS
Over operating temperature range (T
J
= -40°C to +125°C), V
IN
= highest V
OUT(nom)
+ 1.0 V or 2.7 V (whichever is greater),
I
OUT
= 1 mA, V
EN1, 2
= 1.2 V, C
OUT
= 10 mF, C
NR
= 0.01 mF, and adjustable LDOs are tested at V
OUT
= 3.0 V, unless otherwise
noted. Typical values are at T
J
= +25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage range
(1)
2.7 5.5 V
V
FB
Internal reference (adjustable LDOs) 1.200 1.225 1.250 V
Output voltage range
V
FB
5.5 - V
DO
V
(adjustable LDOs)
V
OUT
Nominal T
J
= +25°C, I
OUT
= 0 mA -1.5 +1.5
Accuracy
(1)
%
Over V
IN
, V
OUT
+ 1.0 V ≤ V
IN
≤ 5.5 V,
-3 ±1 +3
I
OUT
, and T 0 mA ≤ I
OUT
≤ 250 mA
ΔV
OUT
%/ΔV
IN
Line regulation
(1)
V
OUT
+ 1.0 V ≤ V
IN
≤ 5.5 V 0.05 %/V
ΔV
OUT
%/ΔI
OU
Load regulation 0 mA ≤ I
OUT
≤ 250 mA 0.8 %/mA
T
2.8 V,
Dropout voltage
(2)
V
DO
2.85 V I
OUT1
= I
OUT2
= 250 mA 125 230 mV
(V
IN
= V
OUT(nom)
- 0.1V)
Adjustable
I
CL
Output current limit V
OUT
= 0.9 × V
OUT(nom)
400 600 800 mA
One LDO
I
OUT
= 1 mA (enabled channel) 190 250
enabled
I
GND
Ground pin current mA
Both LDOs
I
OUT1
= I
OUT2
= 1 mA to 250 mA 300 600
enabled
I
SHDN
Shutdown current
(3)
V
EN
≤ 0.4 V, 0 V ≤ V
IN
≤ 5.5 V 0.3 2.0 mA
I
FB
FB pin current (adjustable LDOs) 0.1 1 mA
No C
NR
, I
OUT
= 250 mA 80.0 × V
OUT
Output noise voltage,
V
n
mVrms
BW = 10 Hz - 100 kHz
C
NR
= 0.01 mF, I
OUT
= 250 mA 11.8 × V
OUT
f = 100 Hz, I
OUT
= 250 mA 65
Power-supply rejection ratio
PSRR dB
(ripple rejection)
f = 10 kHz, I
OUT
= 250 mA 65
t
STR
Startup time V
OUT
= 2.85 V, R
L
= 30Ω, C
NR
= 0.001 mF 60 ms
V
IH
Enable threshold high (EN1, EN2) 1.2 V
IN
V
V
IL
Enable threshold low (EN1, EN2) 0 0.4 V
I
EN
Enable pin current (EN1, EN2) V
IN
= V
EN
= 5.5 V -1 1 mA
Shutdown Temp increasing +160
T
SD
Thermal shutdown temperature °C
Reset Temp decreasing +140
Undervoltage lockout threshold V
IN
rising 2.25 2.65 V
UVLO
Undervoltage lockout hysteresis V
IN
falling 100 mV
(1) Minimum V
IN
= V
OUT
+ V
DO
or 2.7 V, whichever is greater.
(2) V
DO
is not measured for 1.8 V regulators since minimum V
IN
= 2.7 V.
(3) For the adjustable version, this applies only after V
IN
is applied; then V
EN
transitions from high to low.
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