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參數(shù)資料
| 型號(hào)： | CS3865CGDWR16 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 1 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 0.300 INCH, MS-013, SO-16 |
| 文件頁(yè)數(shù)： | 4/8頁(yè) |
| 文件大?。?/td> | 82K |
| 代理商： | CS3865CGDWR16 |
4
CS3865C
Package Pin Description
PACKAGE PIN #
PIN SYMBOL
FUNCTION
Typical Performance Characteristics
100pF
1.0nF
10k
30k
50k
100k
300k
500k
1.0M
f OSC OSCILLATOR FREQUENCY (Hz)
4.0
6.0
8.0
10
12
14
16
R
T
TIMING
RESIST
OR
(K
)
TA=25°C
2
.2
n
F
3.3nF
5.0nF
C
T =10nF
VCC=
15V
220pF
330pF
500pF
10k
30k
50k
100k
300k
500k
1.0M
f OSC OSCILLATOR FREQUENCY (Hz)
38
40
42
44
46
48
50
MAXIMUM
DUTY
CYCLE
(%)
VCC = 15V
RT = 4.0k to 16k
CL = 15pF
TA = 25°C
OUT 2
OUT 1
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
A
VOL
,OPEN-LOOP
VOL
T
AGE
GAIN
(dB)
VCC = 15V
VO = 1.5V TO 2.5V
RL = 100k
TA = 25°C
GAIN
PHASE
180
150
120
90
60
30
0
Phase
Margin
(DEGREES)
0
1.0
2.0
3.0
4.0
5.0
7.0
ERROR AMP OUTPUT VOLTAGE (V)
0
0.1
0.2
0.3
0.4
0.5
0.6
Vth,
CURRENT
SENSE
INPUT
THRESHHOLD
(V)
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 L PDIP & 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 fre-
quency.
3RT
Resistor RT connects to ground setting the charge current for CT. Its
value must be between 4.0k and 16k.
4VFB
1
The inverting input of error amplifier 1. Normally it is connected 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.
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