Electrical Characteristics: -40°C < T
A
< 85°C, -40°C < T
J
< 150°C, 3V < V
C
< 20V, 8.2V < V
CC
< 20V,
R
T
= 12kΩ, C
T
= 390pF, unless otherwise stated
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CS51021/22/23/24
s
Error Amplifier continued
COMP High Voltage
COMP Low Voltage
PS Ripple Rejection
SS Clamp, V
COMP
I
LIM(SET)
Clamp
s
Oscillator
Accuracy
Voltage Stability
Temperature Stability
Min Charge & Discharge Time
Duty Cycle Accuracy
Peak Voltage
Valley Voltage
Valley Clamp Voltage
Discharge Current
Discharge Current
s
Synchronization (CS51021/23)
Input Threshold
Output Pulsewidth
Output High Voltage
Input Resistance
Drive Delay
Output Drive Current
s
SLEEP (CS51022/24)
SLEEP Input Threshold
SLEEP Input Current
I
CC
@ SLEEP
s
GATE Driver
HIGH Voltage
LOW Voltage
HIGH Voltage Clamp
LOW Voltage Clamp
Peak Current
UVL Leakage
RISE Time
FALL Time
Measure V
C
-GATE, V
C
= 10V, 150mA Load
Measure GATE-PGnd, 150mA SINK
V
C
= 20V, 1nF
Measured at 10mA Output Current
V
C
= 20V, 1nF (Note 1)
V
C
= 20V, measured at 0V
Load = 1nF, 1V < GATE < 9V,
V
C
= 20V, T
A
= 25˚C
Load = 1nF, 9V > GATE > 1V, V
C
= 20V
11
1.5
1.2
13.5
0.6
1
-1
60
15
2.2
1.5
16
0.8
-50
100
40
V
V
V
V
A
µA
ns
ns
Active High
V
SLEEP
= 4V
V
CC
≤
15V
1.0
11
1.5
25
50
2.7
46
100
V
µA
µA
1.0
160
3.5
35
80
1.25
1.5
260
4.3
70
120
2
2.7
360
4.8
140
150
3.5
V
ns
V
kΩ
ns
mA
R
T
= 12k, C
T
= 390pF
Delta Frequency 8.2V < V
CC
< 20V
T
MIN
< T
A
< T
MAX
(Note1)
(Note1)
R
T
= 12k, C
T
= 390pF
(Note 1)
(Note 1)
10k Resistor to ground on R
T
C
T
T
A
=25°C (Note 1)
0.333
70
230
255
2
8
77
3
1.5
1.4
1
1
83
280
3
kHz
%
%
µs
%
V
V
V
mA
mA
V
FB
= 2.3V
V
FB
= 2.7V
FREQ = 120Hz (Note 1)
V
SS
=2.5V, V
FB
= 0V, I
SET
= 2V
(Note 1)
4.35
0.4
60
2.4
0.95
4.8
0.8
85
2.5
1
5
1.2
2.6
1.15
V
V
dB
V
V
1.2
0.8
0.925
1.6
1.2
1.075
I
SYNC
= 100µA
(Note 1)
SYNC to GATE RESET
1k Load
3
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
