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CS3524A Datenblatt(PDF) 3 Page - Cherry Semiconductor Corporation

Teilenummer CS3524A
Bauteilbeschribung  Voltage Mode PWM Control Circuit with 200mA Output Drivers
PDF  6 Pages
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Hersteller  CHERRY [Cherry Semiconductor Corporation]
Direct Link  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS3524A Datenblatt(HTML) 3 Page - Cherry Semiconductor Corporation

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3
Electrical Characteristics: continued
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Typical Performance Characteristics
80
60
40
20
0
100
1k
10k
100k
1M
FREQUENCY (Hz)
RF = ∞
RF = 1MΩ
RF = 300kΩ
RF = 100kΩ
RF = 30kΩ
VIN = 20V
TA = 25˚C
RF is impedance to ground.
Values below 30kΩ will begin
to limit the maximum
duty-cycle.
50
40
30
20
10
0
123
4
5
INPUT VOLTAGE VIN
VIN = 20V
RT = 2700Ω
TA = 25˚C
0
Note: Duty-Cycle is
percent of two
clock periods that
one output conducts
Duty Cycle vs. Input Voltage
Error Amplifier Voltage Gain vs. Frequency Over RF
s
Error Amplifier Section (Unless otherwise specified, VCM = 2.5V): continued
Open Loop Voltage Gain
∆V
OUT = 1 to 4V, RL ≥ 10 MΩ
60
80
dB
Gain-Bandwidth*
TA = 25˚C, AV = 0dB
3
MHz
s
Current Limit Amplifier (Unless otherwise specified, VSENSE = VO)
Input Offset Voltage
TA = 25˚C, EA Set for Max. Output
180
200
220
mV
Input Offset Voltage
Over Operating Temperature Range
170
230
mV
Input Bias Current
-1
-10
µA
Common Mode
Rejection Ratio
VSENSE = 0 to 15V
50
60
dB
Power Supply Rejection Ratio VIN = 10 to 40V
50
60
dB
Output Swing
Minimum Total Range
0.5
5.0
V
Open Loop Voltage Gain
∆V
OUT = 1 to 4V, RL ≥ 10MΩ
70
80
dB
Delay Time*
∆VIN = 300mV
300
ns
s
Output Section (Each Output)
Collector Emitter Voltage
IC = 100µA
60
80
V
Collector Leakage Current
VCE = 50V
0.1
20.0
µA
Saturation
IC = 20mA
0.2
0.4
V
IC = 200mA
1.0
2.2
V
Emitter Output Voltage
IE = 50mA
17
18
V
Rise Time*
TA = 25˚C, R = 2kΩ
200
ns
Fall Time*
TA = 25˚C, R = 2kΩ
100
ns
Comparator Delay*
TA = 25˚C, VCOMP to VOUT
300
ns
Shutdown Delay*
TA = 25˚C, VSHUT to VOUT
200
ns
Shutdown Threshold
TA = 25˚C, RC = 2kΩ
0.5
0.7
1.0
V
Thermal Shutdown*
165
˚C
* These parameters are guaranteed by design but not 100% tested in production.



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