Datasheet

TPS2480
TPS2481
www.ti.com SLUS939B –APRIL 2010–REVISED DECEMBER 2010
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Power Good Output (PG)
I
PG
= 2 mA 0.1 0.25
V
PG_L
Low voltage (sinking)
I
PG
= 4 mA 0.25 0.5
PG threshold voltage; VOUT
V
PGTL
V
SENSE
= V
VCC
; measure V
(VCC-OUT)
0.8 1.25 1.7
rising; PG goes open drain
V
PG threshold voltage; VOUT
V
PGTH
V
SENSE
= V
VCC
; measure V
(VCC-OUT)
2.2 2.7 3.2
falling; PG goes low
PG threshold hysteresis
V
HYST_PG
V
SENSE
= V
VCC
1.4
voltage; V(SENSE-OUT)
PG deglitch delay; detection
t
DPG
to output; rising and falling V
SENSE
= V
VCC
5 9 15 ms
edges
Leakage current; PG false; open drain 10 mA
Output Voltage Feedback Input (OUT)
V
OUT
= V
VCC
, V
EN
= Hi; sinking 8 20
I
OUT
Bias current mA
V
OUT
= GND; V
EN
= Lo; sourcing 18 40
Enable Input (EN)
V
EN_H
Threshold VEN going high 1.32 1.35 1.38
V
V
EN_L
Threshold VEN going low 1.20 1.25 1.30
VEN hysteresis 100 mV
Leakage current V
EN
= 30 V 1 mA
Input Supply UVLO (VCC)
V
VCC
turn on Rising 8.4 8.8
V
V
VCC
turn off Falling 7.2 8.3
Hysteresis 75 mV
Digital Inputs (SDA in input mode, SCL, A0, A1 )
C
IN
Input capacitance 3 pF
I
LEAKAGE
Input leakage current 0 < V
IN
< V
S
0.1 1 mA
V
IN HI
Logic Hi input level 0.7(V
S
) 6
V
INLO
Logic low input level -0.3 0.3(V
S
) V
V
HYS
Hysteresis 0.5
Open Drain Digital Output (SDA)
V
LO
SDA Low Output Sinking 5 mA 0.15 0.4 V
I
LEAKAGE
High level leakage current V
OUT
= V
S
0.1 1.0 mA
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