Datasheet

TPS736xx
SBVS038T –SEPTEMBER 2003–REVISED AUGUST 2010 www.ti.com
ELECTRICAL CHARACTERISTICS
Over operating temperature range (T
J
= –40°C to +125°C), V
IN
= V
OUT(nom)
+ 0.5V
(1)
, I
OUT
= 10mA, V
EN
= 1.7V, and
C
OUT
= 0.1mF, 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)
1.7 5.5 V
V
FB
Internal reference (TPS73601) T
J
= +25°C 1.198 1.20 1.210 V
Output voltage range
V
FB
5.5 – V
DO
V
(TPS73601)
(3)
V
OUT
Nominal T
J
= +25°C –0.5 +0.5
Accuracy
(1)
%
over V
IN
, I
OUT
, V
OUT
+ 0.5V ≤ V
IN
≤ 5.5V;
(4)
–1.0 ±0.5 +1.0
and T 10mA ≤ I
OUT
≤ 400mA
ΔV
OUT
%/ΔV
IN
Line regulation
(1)
V
O(nom)
+ 0.5V ≤ V
IN
≤ 5.5V 0.01 %/V
1mA ≤ I
OUT
≤ 400mA 0.002
ΔV
OUT
%/ΔI
OUT
Load regulation %/mA
10mA ≤ I
OUT
≤ 400mA 0.0005
Dropout voltage
(5)
V
DO
I
OUT
= 400mA 75 200 mV
(V
IN
= V
OUT(nom)
– 0.1V)
Z
O
(DO) Output impedance in dropout 1.7V ≤ V
IN
≤ V
OUT
+ V
DO
0.25 Ω
V
OUT
= 0.9 × V
OUT(nom)
400 650 800 mA
I
CL
Output current limit
3.6V ≤ V
IN
≤ 4.2V, 0°C ≤ T
J
≤ +70°C 500 800 mA
I
SC
Short-circuit current V
OUT
= 0V 450 mA
I
REV
Reverse leakage current
(6)
(–I
IN
) V
EN
≤ 0.5V, 0V ≤ V
IN
≤ V
OUT
0.1 10 mA
I
OUT
= 10mA (I
Q
) 400 550
I
GND
GND pin current mA
I
OUT
= 400mA 800 1000
V
EN
≤ 0.5V, V
OUT
≤ V
IN
≤ 5.5,
I
SHDN
Shutdown current (I
GND
) 0.02 1 mA
–40°C ≤ T
J
≤ +100°C
I
FB
FB pin current (TPS73601) 0.1 0.3 mA
f = 100Hz, I
OUT
= 400mA 58
Power-supply rejection ratio
PSRR dB
(ripple rejection)
f = 10KHz, I
OUT
= 400mA 37
C
OUT
= 10mF, No C
NR
27 × V
OUT
Output noise voltage
V
N
mV
RMS
BW = 10Hz – 100KHz
C
OUT
= 10mF, C
NR
= 0.01mF 8.5 × V
OUT
V
OUT
= 3V, R
L
= 30Ω C
OUT
= 1mF,
t
STR
Startup time 600 ms
C
NR
= 0.01mF
V
EN
(HI) EN pin high (enabled) 1.7 V
IN
V
V
EN
(LO) EN pin low (shutdown) 0 0.5 V
I
EN
(HI) EN pin current (enabled) V
EN
= 5.5V 0.02 0.1 mA
Shutdown, temperature increasing +160
T
SD
Thermal shutdown temperature °C
Reset, temperature decreasing +140
T
J
Operating junction temperature –40 +125 °C
(1) Minimum V
IN
= V
OUT
+ V
DO
or 1.7V, whichever is greater.
(2) For V
OUT(nom)
< 1.6V, when V
IN
≤ 1.6V, the output will lock to V
IN
and may result in a damaging over-voltage level on the output. To
avoid this situation, disable the device before powering down the V
IN
.
(3) TPS73601 is tested at V
OUT
= 2.5V.
(4) Tolerance of external resistors not included in this specification.
(5) V
DO
is not measured for fixed output versions with V
OUT(nom)
< 1.8V.
(6) Fixed-voltage versions only; refer to Applications section for more information.
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