Datasheet

TPS2363
www.ti.com SLUS680B –JANUARY 2006–REVISED JANUARY 2010
ELECTRICAL CHARACTERISTICS (continued)
Supply voltages; SH33A/B & AUXINA/B = 3.0 V to 3.6 V, SH12A/B = 10.8 V to 13.2 V, T
A
= -40°C to 85°C, RFILTER = open,
all outputs are not loaded (unless otherwise specified).
(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
PCIExpress AUX
AUXINA/B voltage 3.0 3.6 V
AUXENA/B = high, (no load), ONA/B
1
= high
AUXINA/B supply current AUXENA/B = high, (no load), ONA/B mA
1
= low
AUXENA/B = low, ONA/B = low 1
AUXENA/B = high, I(VAUXA/B) =
VAUXA/B on resistance 400 mΩ
375 mA
Default current limit, VAUXA/B = 1 V 400 750 mA
VAUXA/B set to high current limit
Current llmit
(SMBus) or (pins 18 & 19), 0.8 1.4 A
VAUXA/B = 1 V
Increasing 2.8 2.9 3.0 V
UVLO
Hysteresis 50 mV
Increasing 2.7 2.8 2.9 V
PGOOD
Hysteresis 50 mV
bleed down resistance AUXENA/B = low, VAUXA/B = 1.65 400 Ω
V
low comparator threshold 0.075 0.1 0.15 V
Off-state output offset voltage AUXENA/B = low, T
J
= 125°C 50 mV
Timing
V
FILTER
(CFILTERA/B) Threshold voltage 1.2 1.25 1.3 V
Filter charging current, when the
voltage across the sense resistor is 2.1 2.5 3.1 mA
I
FILTER
(CFILTERA/B)
greater than the threshold limit
Filter discharging current, 1.5 V 1 mA
R
FILTER
108.8 110 111.2 kΩ
The voltage across the sense
Scaling factor SF resistor is greater than the threshold 4.5 5 5.5 V
limit
(SH12A/B - SL12A/B = 110 mV) or
Fast trip 200 500
(SH33A/B – SL33A/B = 110 mV)
ns
12 V at 9.2 V, 3.3 V and VAUXA/B
PGOOD response to output UV 100 200
at 2.5 V
POR, power on reset After AUXINA/B becomes valid 250 ms
GPIA/Bx, debounce Designed for switch contact closure 5 ms
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