Datasheet

TPS720xx
SBVS100D – JUNE 2008 – REVISED AUGUST 2009 ........................................................................................................................................................ www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Over operating temperature range (T
J
= – 40 ° C to +125 ° C), V
BIAS
= (V
OUT
+ 1.4V) or 2.5V (whichever is greater); V
IN
≥ V
OUT
+
0.5V, I
OUT
= 1mA, V
EN
= 1.1V, C
OUT
= 2.2 µ F, unless otherwise noted. Typical values are at T
J
= +25 ° C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f = 10Hz 80 dB
f = 100Hz 80 dB
V
IN
– V
OUT
≥ 0.5V,
f = 1kHz 75 dB
PSRR V
BIAS
power-supply rejection ratio V
BIAS
= V
OUT
+ 1.4V,
f = 10kHz 65 dB
I
OUT
= 350mA
f = 100kHz 55 dB
f = 1MHz 35 dB
BW = 10Hz to 100kHz, V
BIAS
≥ 2.5V,
V
N
Output noise voltage 48 µ V
RMS
V
IN
= V
OUT
+ 0.5V
V
BIAS
= (V
OUT
+1.4V) or 2.5V (whichever is 100 +
I
VIN_INRUSH
Inrush current on V
IN
mA
greater), V
IN
= V
OUT
+ 0.5V I
LOAD
V
OUT
= 95% V
OUT(NOM)
, I
OUT
= 350mA,
t
STR
Startup time 140 µ s
C
OUT
= 2.2 µ F
V
EN(HI)
Enable pin high (enabled) 1.1 V
V
EN(LO)
Enable pin low (disabled) 0 0.4 V
I
EN
Enable pin current V
EN
= 5.5V, V
IN
= 4.5V, V
BIAS
= 5.5V 1.0 µ A
Undervoltage lockout V
BIAS
rising 2.41 2.45 2.49 V
UVLO
Hysteresis V
BIAS
falling 150 mV
Shutdown, temperature increasing +160 ° C
T
SD
Thermal shutdown temperature
Reset, temperature decreasing +140 ° C
T
J
Operating junction temperature – 40 +125 ° C
4 Submit Documentation Feedback Copyright © 2008 – 2009, Texas Instruments Incorporated