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| CS3524A Datasheet, PDF (3/6 Pages) Cherry Semiconductor Corporation – Voltage Mode PWM Control Circuit with 200mA Output Drivers | |||
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Electrical Characteristics: continued
PARAMETER
TEST CONDITIONS
MIN
TYP
s Error Amplifier Section (Unless otherwise specified, VCM = 2.5V): continued
Open Loop Voltage Gain
Gain-Bandwidth*
âVOUT = 1 to 4V, RL ⥠10 Mâ¦
TA = 25ËC, AV = 0dB
60
80
3
s Current Limit Amplifier (Unless otherwise specified, VSENSE = VO)
Input Offset Voltage
TA = 25ËC, EA Set for Max. Output
180
200
Input Offset Voltage
Over Operating Temperature Range 170
Input Bias Current
-1
Common Mode
Rejection Ratio
VSENSE = 0 to 15V
Power Supply Rejection Ratio VIN = 10 to 40V
Output Swing
Minimum Total Range
50
60
50
60
0.5
Open Loop Voltage Gain
Delay Time*
âVOUT = 1 to 4V, RL ⥠10Mâ¦
âVIN = 300mV
70
80
300
s Output Section (Each Output)
Collector Emitter Voltage
Collector Leakage Current
Saturation
Emitter Output Voltage
Rise Time*
Fall Time*
Comparator Delay*
Shutdown Delay*
Shutdown Threshold
Thermal Shutdown*
IC = 100µA
VCE = 50V
IC = 20mA
IC = 200mA
IE = 50mA
TA = 25ËC, R = 2kâ¦
TA = 25ËC, R = 2kâ¦
TA = 25ËC, VCOMP to VOUT
TA = 25ËC, VSHUT to VOUT
TA = 25ËC, RC = 2kâ¦
60
80
0.1
0.2
1.0
17
18
200
100
300
200
0.5
0.7
165
* These parameters are guaranteed by design but not 100% tested in production.
MAX
UNIT
dB
MHz
220
mV
230
mV
-10
µA
dB
dB
5.0
V
dB
ns
V
20.0
µA
0.4
V
2.2
V
V
ns
ns
ns
ns
1.0
V
ËC
Typical Performance Characteristics
Error Amplifier Voltage Gain vs. Frequency Over RF
Duty Cycle vs. Input Voltage
RF = â
80
RF = 1Mâ¦
60 RF = 300kâ¦
RF = 100kâ¦
40 RF = 30kâ¦
VIN = 20V
TA = 25ËC
20
RF is impedance to ground.
Values below 30k⦠will begin
to limit the maximum
0 duty-cycle.
100
1k
10k
100k
1M
FREQUENCY (Hz)
50
40
VIN = 20V
RT = 2700â¦
TA = 25ËC
30
20
10
0
0
Note: Duty-Cycle is
percent of two
clock periods that
one output conducts
1
2
3
4
5
INPUT VOLTAGE VIN
3
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