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Part Name
Description
CS51221ED16 View Datasheet(PDF) - Cherry semiconductor
Part Name
Description
Manufacturer
CS51221ED16
Enhanced Voltage Mode PWM Controller
Cherry semiconductor
CS51221ED16 Datasheet PDF : 12 Pages
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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
s
Overcurrent Protection
Overcurrent Threshold
I
SENSE
to GATE Delay
TEST CONDITIONS
I
SET
= 0.5V, Ramp I
SENSE
MIN
0.475
50
TYP
0.500
90
MAX
0.525
125
UNIT
V
ns
s
External Voltage Monitors
Overvoltage Threshold
Overvoltage Hysteresis
Current
Undervoltage Threshold
Undervoltage Hysteresis
OV increasing
OV = 2.15V
UV increasing
1.9
2.0
10.0
12.5
0.95
1.00
25
75
2.1
V
15.0
µA
1.05
V
125
mV
s
Soft Start (SS)
Charge Current
Discharge Current
Charge Voltage
Discharge Voltage
Soft Start Clamp Offset
Soft Start Fault Voltage
SS = 2V
SS = 2V
FF = 1.25V
OV = 2.15V or LV = 0.85V
40
50
4
5
2.8
3.0
0.25
0.3
1.15
1.25
0.1
70
µA
7
µA
3.4
V
0.35
V
1.35
V
0.2
V
s
Blanking
Blanking Time
SS Blanking Disable
Threshold
COMP Blanking Disable
Threshold
V
FB
< 1
V
FB
< 1, SS > 3V
50
150
2.8
3.0
2.8
3.0
250
ns
3.3
V
3.3
V
s
Thermal Shutdown
Thermal Shutdown
Thermal Hysteresis
(Note 1)
(Note 1)
125
150
5
10
180
˚
C
15
˚
C
Note 1: Guaranteed by design, not 100% tested in production.
5
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