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CS5661 데이터시트(PDF) 4 Page - Cherry Semiconductor Corporation

부품명 CS5661
상세설명  High Performance Dual Channel Current Mode Controller with ENABLE
PDF  8 Pages
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제조업체  CHERRY [Cherry Semiconductor Corporation]
홈페이지  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS5661 데이터시트(HTML) 4 Page - Cherry Semiconductor Corporation

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Package Pin Description
PACKAGE PIN #
PIN SYMBOL
FUNCTION
Typical Performance Characteristics
10k
30k
50k
100k
300k
500k
1.0M
f OSC OSCILLATOR FREQUENCY (Hz)
4.0
6.0
8.0
10
12
14
16
TA=25°C
VCC=
15V
10k
30k
50k
100k
300k
500k
1.0M
f OSC OSCILLATOR FREQUENCY (Hz)
38
40
42
44
46
48
50
VCC = 15V
RT = 4.0kΩ to 16kΩ
CL = 15pF
TA = 25°C
Max. Output Duty Cycle vs. Oscillator Frequency
Timing Resistor vs. Oscillator Frequency
10k
100k
1.0k
10k
100k
1.0M
10M
f, FREQUENCY (Hz)
-20
0
20
40
60
80
100
VCC = 15V
VO = 1.5V TO 2.5V
RL = 100kΩ
TA = 25°C
GAIN
PHASE
180
150
120
90
60
30
0
0
1.0
2.0
3.0
4.0
5.0
7.0
ERROR AMP OUTPUT VOLTAGE (V)
0
0.2
0.4
0.6
0.8
1.0
1.2
6.0
VCC = 15V
TA = 125°C
TA = 25°C
TA = -55°C
Current Sense Input Threshold
vs. Error Amp Output Voltage
Error Amp Open-Loop Gain & Phase vs. Frequency
16 Lead SO Wide
1
SYNC
A positive going pulse applied to this input will synchronize the
oscillator. A DC voltage within the range of 2.4V to 5.5V will
inhibit the oscillator.
2CT
Timing capacitor CT connects pin to ground setting oscillator
frequency.
3RT
Resistor RT connects to ground setting the charge current for CT.
Its value must be between 4.0kΩ and 16kΩ.
4VFB
1
The inverting input of error amplifier 1. Normally it is connect-
ed to the switching power supply output.
5
COMP1
The output of error amplifier 1, for loop compensation.
6
SENSE1
Output 1 pulse by pulse current limit.
7VOUT
1
Drives the power switch at output 1.
8
Gnd
Logic ground
9
Pwr Gnd
Power ground. Power device return is connected to this pin.
10
VOUT
2
Drives the power switch at output 2.
11
SENSE2
Output 2 pulse by pulse current limit.
12
COMP2
Output of error amplifier 2, for loop compensation.
13
VFB
2
Inverting input of error amplifier 2. Normally it is connected to
the switching power supply output.
14
ENABLE2
Output 2 disable. A logic low at this pin disables VOUT
2.
15
VREF
5.0V reference output. It can source current in excess of 30mA.
16
VCC
The positive supply of the IC. The minimum operating voltage
after start-up is 8.8V.



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