TPS2320, TPS2321
DUAL HOT SWAP POWER CONTROLLER
WITH INDEPENDENT CIRCUIT BREAKER
SLVS276A – MARCH 200 – REVISED APRIL 2000
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating temperature range (–40°C < TA < 85°C),
3 V ≤ V
I(IN1)
≤13 V, 3 V ≤ V
I(IN2)
≤ 5.5 V ( unless otherwise noted) (continued)
TIMER
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
OT(TIMER)
Threshold voltage, TIMER 0.4 0.5 0.6 V
Charge current, TIMER V
I(TIMER)
= 0 V 35 50 65 µA
Discharge current, TIMER V
I(TIMER)
= 1 V 1 2.5 mA
circuit breaker
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IT(CB)
Undervoltage voltage, circuit breaker R
ISETx
= 1 kΩ 40 50 60 mV
I
IB(ISENSEx)
Input bias current, I
SENSEx
0.1 5 µA
t
pd(CB)
Propagation (delay) time, comparator inputs to
gate output
Cg = 50 pF,
(50% to 10%)
10 mV overdrive,
C
O(timer)
= 50 pF
1.3 µs
ENABLE, active low (TPS2320)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IH(ENABLE)
High-level input voltage, ENABLE 2 V
V
IL(ENABLE
)
Low-level input voltage, ENABLE 0.8 V
R
I(ENABLE
)
Input pullup resistance,
ENABLE
See Note 3 100 200 300 kΩ
t
d_off(ENABLE)
Turnoff delay time, ENABLE
V
I(ENABLE)
increasing above stop threshold; 100
ns rise time, 20 mV overdrive (see Note 2)
60 µs
t
d_on(ENABLE)
Turnon delay time, ENABLE
V
I(ENABLE
)
decreasing below start threshold;
100 ns fall time, 20 mV overdrive (see Note 2)
125 µs
NOTES: 2. Specified, but not production tested.
3. Test IO of ENABLE
at V
I(ENABLE
)
= 1 V and 0 V, then R
I(ENABLE)
=
1V
I
O_
0V
*
I
O_
1V
ENABLE, active high (TPS2321)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IH(ENABLE)
High-level input voltage, ENABLE 2 V
V
IL(ENABLE)
Low-level input voltage, ENABLE 0.7 V
R
I(ENABLE)
Input pulldown resistance,
ENABLE
100 150 300 kΩ
t
d_on(ENABLE)
Turnon delay time, ENABLE
V
I(ENABLE)
increasing above start threshold;
100 ns rise time, 20 mV overdrive (see Note 2)
85 µs
t
d_off(ENABLE)
Turnoff delay time, ENABLE
V
I(ENABLE)
decreasing below stop threshold;
100 ns fall time, 20 mV overdrive (see Note 2)
100 µs
NOTE 2: Specified, but not production tested.
PREREG
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VREG PREREG output voltage 4.5 ≤ V
I(IN1)
≤ 13 V 3.5 4.1 5.5 V
Vdrop_PREREG PREREG dropout voltage V
I(IN1)
= 3 V 0.1 V