Datasheet

Data Sheet ADM1178
Rev. D | Page 3 of 24
SPECIFICATIONS
V
CC
= 3.15 V to 16.5 V, T
A
= −40°C to +85°C, typical values at T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
VCC PIN
Operating Voltage Range, V
CC
3.15 16.5 V
Supply Current, I
CC
1.7 2.5 mA
Undervoltage Lockout, V
UVLO
2.8 V VCC rising
Undervoltage Lockout Hysteresis, V
UVLOHYST
80 mV
ON PIN
Input Current, I
INON
−100 +100 nA ON < 1.5 V
−2 +2 µA
Rising Threshold, V
ONTH
1.26 1.3 1.34 V ON rising
Trip Threshold Hysteresis, V
ONHYST
35 50 65 mV
Glitch Filter Time 3 µs
ALERTB PIN
Output Low Voltage, V
ALERTOL
0.05
0.1
V
I
ALERT
= −100 µA
1 1.5 V I
ALERT
= −2 mA
Input Current, I
ALERT
−1 +1 µA V
ALERT
= V
CC
; ALERTB not asserted
SENSE PIN
Input Leakage, I
SENSE
−1 +1 µA V
SENSE
= V
CC
Overcurrent Fault Timing Threshold, V
OCTRIM
92 mV V
OCTRIM
= (V
CC
− V
SENSE
), fault timing
starts on the TIMER pin
Overcurrent Limit Threshold, V
LIM
97 100 103 mV V
LIM
= (V
CC
− V
SENSE
), closed-loop
regulation to a current limit
Fast Overcurrent Trip Threshold, V
OCFAST
115 mV V
OCFAST
= (V
CC
− V
SENSE
), gate pull-down
current turned on
GATE PIN
Drive Voltage, V
GAT E
3 6 9 V V
GAT E
− V
CC
, V
CC
= 3.15 V
9 11 13 V V
GAT E
− V
CC
, V
CC
= 5 V
7 10 13 V V
GAT E
− V
CC
, V
CC
= 16.5 V
Pull-Up Current 8 12.5 17 µA V
GAT E
= 0 V
Pull-Down Current
1.5
mA
V
GAT E
= 3 V, V
CC
= 3.15 V
5 mA V
GAT E
= 3 V, V
CC
= 5 V
7 mA V
GAT E
= 3 V, V
CC
= 16.5 V
TIMER PIN
Pull-Up Current (Power-On Reset), I
TIMERUPPOR
−3.5 −5 −6.5 µA Initial cycle, V
TIMER
= 1 V
Pull-Up Current (Fault Mode), I
TIMERUPFAULT
−40 −60 −80 µA During current fault, V
TIMER
= 1 V
Pull-Down Current (Retry Mode), I
TIMERDNRETRY
2 3 µA After current fault and during a cooldown
period on a retry device, V
TIMER
= 1 V
Pull-Down Current, I
TIMERDN
100
µA
Normal operation, V
TIMER
= 1 V
Trip Threshold High, V
TIMERH
1.26
1.3
1.34
V
TIMER rising
Trip Threshold Low, V
TIMERL
0.175 0.2 0.225 V TIMER falling
ADR PIN
Set Address to 00, V
ADRLOWV
0 0.8 V Low state
Set Address to 01, R
ADRLOWZ
135 150 165 kΩ Resistor to ground state, load pin with
specified resistance for 01 decode
Set Address to 10, I
ADRHIGHZ
−1 +1 µA Open state, maximum load allowed on
ADR pin for 10 decode
Set Address to 11, V
ADRHIGHV
2 5.5 V High state
Input Current for 11 Decode, I
ADRHIGH
3 10 µA V
ADR
= 2.0 V to 5.5 V
Input Current for 00 Decode, I
ADRLOW
−40 −22 µA V
ADR
= 0 V to 0.8 V