CS51021 Ver la hoja de datos (PDF) - Cherry semiconductor
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Fabricante
CS51021 Datasheet PDF : 9 Pages
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Electrical Characteristics: -40°C < TA < 85°C, -40°C < TJ < 150°C, 3V < VC < 20V, 8.2V < VCC < 20V,
RT = 12kΩ, CT = 390pF, unless otherwise stated
PARAMETER
s Error Amplifier continued
COMP High Voltage
COMP Low Voltage
PS Ripple Rejection
SS Clamp, VCOMP
ILIM(SET) Clamp
TEST CONDITIONS
VFB = 2.3V
VFB = 2.7V
FREQ = 120Hz (Note 1)
VSS=2.5V, VFB = 0V, ISET = 2V
(Note 1)
MIN
TYP
MAX
UNIT
4.35
4.8
0.4
0.8
60
85
2.4
2.5
0.95
1
5
V
1.2
V
dB
2.6
V
1.15
V
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
RT = 12k, CT = 390pF
Delta Frequency 8.2V < VCC < 20V
TMIN < TA < TMAX (Note1)
(Note1)
RT = 12k, CT = 390pF
(Note 1)
(Note 1)
10k Resistor to ground on RTCT
TA=25°C (Note 1)
230
255
2
8
0.333
70
77
3
1.5
1.2
1.4
0.8
1
0.925
1
280
kHz
3
%
%
µs
83
%
V
V
1.6
V
1.2
mA
1.075
mA
s Synchronization (CS51021/23)
Input Threshold
Output Pulsewidth
Output High Voltage
Input Resistance
Drive Delay
Output Drive Current
ISYNC = 100µA
(Note 1)
SYNC to GATE RESET
1k Load
1.0
1.5
160
260
3.5
4.3
35
70
80
120
1.25
2
2.7
V
360
ns
4.8
V
140
kΩ
150
ns
3.5
mA
s SLEEP (CS51022/24)
SLEEP Input Threshold
SLEEP Input Current
ICC @ SLEEP
Active High
VSLEEP = 4V
VCC ≤ 15V
1.0
1.5
2.7
V
11
25
46
µA
50
100
µA
s GATE Driver
HIGH Voltage
LOW Voltage
HIGH Voltage Clamp
LOW Voltage Clamp
Peak Current
UVL Leakage
RISE Time
FALL Time
Measure VC-GATE, VC = 10V, 150mA Load
1.5
2.2
V
Measure GATE-PGnd, 150mA SINK
1.2
1.5
V
VC = 20V, 1nF
11
13.5
16
V
Measured at 10mA Output Current
0.6
0.8
V
VC = 20V, 1nF (Note 1)
1
A
VC = 20V, measured at 0V
-1
-50
µA
Load = 1nF, 1V < GATE < 9V,
60
100
ns
VC = 20V, TA = 25˚C
Load = 1nF, 9V > GATE > 1V, VC = 20V
15
40
ns
3
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