CS51221
Electrical Characteristics: -40˚C < T
A
< 85˚C; -40˚C < T
J
< 125˚C; 3V < V
C
< 15V; 4.7V < V
CC
< 15V; Rt=12K, Ct=390pF
Unless otherwise stated.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
s
Overcurrent Protection
Overcurrent Threshold
I
SENSE
to GATE Delay
s
External Voltage Monitors
Overvoltage Threshold
Overvoltage Hysteresis
Current
Undervoltage Threshold
Undervoltage Hysteresis
s
Soft Start (SS)
Charge Current
Discharge Current
Charge Voltage
Discharge Voltage
Soft Start Clamp Offset
Soft Start Fault Voltage
s
Blanking
Blanking Time
SS Blanking Disable
Threshold
COMP Blanking Disable
Threshold
s
Thermal Shutdown
Thermal Shutdown
Thermal Hysteresis
(Note 1)
(Note 1)
125
5
150
10
180
15
˚C
˚C
V
FB
< 1
V
FB
< 1, SS > 3V
50
2.8
2.8
150
3.0
3.0
250
3.3
3.3
ns
V
V
FF = 1.25V
OV = 2.15V or LV = 0.85V
SS = 2V
SS = 2V
40
4
2.8
0.25
1.15
50
5
3.0
0.3
1.25
0.1
70
7
3.4
0.35
1.35
0.2
µA
µA
V
V
V
V
OV increasing
OV = 2.15V
UV increasing
1.9
10.0
0.95
25
2.0
12.5
1.00
75
2.1
15.0
1.05
125
V
µA
V
mV
I
SET
= 0.5V, Ramp I
SENSE
0.475
50
0.500
90
0.525
125
V
ns
Note 1: Guaranteed by design, not 100% tested in production.
5
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
