Datasheet

ADM1073 Data Sheet
Rev. B | Page 4 of 24
SPECIFICATIONS
V
DD
= 0 V, V
EE
= −48 V; T
A
= −40°C to +85°C, unless otherwise noted.
Table 1.
Parameter Min Typ Max Unit Test Conditions
BOARD SUPPLY (Not Connected Directly to Device) Limited by external components
Maximum Voltage Range −200 −48 −18 V
Typical Operating Voltage Range −80 −48 −35 V
V
IN
PIN—SHUNT REGULATOR
Operating Supply Voltage Range 11.7 12.3 12.9 V I
IN
= 0.6 mA to 2 mA
Quiescent Supply Current 300 500 μA V
IN
= 11.7 V
Maximum Shunt Supply Voltage 14 V I
IN
= 10 mA
Undervoltage Lockout, V
LKO
8 V
Power-On Reset Delay 150 ms
UV, OV PINS—UNDERVOLTAGE AND OVERVOLTAGE DETECTION
Undervoltage Falling Threshold, V
UVF
825 868 910 mV
Undervoltage Hysteresis Current 5 μA
Undervoltage Fault Filter 0.6 ms
Overvoltage Rising Threshold, V
OVR
1.86 1.93 2.00 V
Overvoltage Hysteresis Current 5 μA
Overvoltage Fault Filter 5 μs
Input Current 0.2 μA
GATE PIN—FET DRIVER
Maximum Gate Voltage 11.5 V
IN(MAX)
V I
GATE
= −1.0 μA
Minimum Gate Voltage 10 100 mV I
GATE
= 1.0 μA
Pull-Up Current −50 μA V
GATE
= 0 V to 8 V; V
SS
= 2 V
−36 μA V
GATE
= 0 V to 8 V; V
SS
= 0 V
Pull-Down Current 20 mA V
GATE
> 2 V
50 mA V
GATE
> 5 V
SENSE PIN—CURRENT SENSE—SOFT START
Current Limit Control Loop Threshold, V
ACL
97 100 103 mV I
GATE
= 0 mA
Circuit Breaker Limit Voltage, V
CB
86 90 mV
Fast Current Limit Voltage, V
FCL
110 mV
Control Loop Transconductance 4.5 μA/mV
Soft Start Pin Current 5 μA
TIMER PIN—PWM CONTROL
Minimum TIMER Pull-Up Current 18 19 20 μA I
PWRGD
< 4 μA; T
A
= 25°C to 85°C
16 19 20 μA I
PWRGD
< 4 μA
Maximum TIMER Pull-Up Current 37 39 41 μA I
PWRGD
= 24 μA; T
A
= 25°C to 85°C
34 39 41 μA I
PWRGD
= 24 μA
TIMER Pull-Down Current 1 μA
TIMER Low Voltage Trip Point 0.45 0.50 0.55 V
TIMER High Voltage Trip Point 2.34 2.42 2.50 V
Current Limit On-Time, t
ON
6 ms I
DRAIN
= 4 μA; C
TIMER
= 47 nF
Current Limit On-Time, t
ON
, with Foldback 3 ms I
DRAIN
= 20 μA; C
TIMER
= 47 nF
Number of Consecutive PWM Retry Cycles 7
Continuous Short-Circuit Time before Latched Shutdown 0.6 s C
TIMER
= 47 nF