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參數資料
| 型號： | CS3865C |
| 廠商： | ZF Electronics Corporation |
| 英文描述： | High Performance Dual Channel Current Mode Controller with ENABLE |
| 中文描述： | 高性能雙通道電流模式控制器，用ENABLE |
| 文件頁數： | 1/8頁 |
| 文件大小： | 171K |
| 代理商： | CS3865C |
1
Features
+
-
+
-
V
REF
SYNC
Oscillator
Error
Amp 1
Error
PWM 2
PWM 1
V
Undervoltage
Lockout
5.0V Ref
V
Undervoltage
Lockout
V
CC
V
FB1
COMP
1
ENABLE
2
V
FB2
COMP
2
C
T
R
T
Gnd
Pwr Gnd
Sense
2
V
OUT2
Sense
1
V
OUT
1
I
Oscillator has Precise
Duty Cycle
Limit and Frequency
Control
500kHz Current Mode
Operation
Automatic Feed Forward
Compensation
Separate Latching PWMs
for Cycle-By-Cycle
Current Limiting
Internally Trimmed
Reference with
Undervoltage Lockout
Switchable Second
Output
Two High Current Totem
Pole Outputs
Input Undervoltage
Lockout with Hysteresis
Low Start-Up and
Operating Current
I
I
I
I
I
I
I
I
Package Options
16L PDIP & SO Wide
C
High Performance Dual Channel
Current Mode Controller with ENABLE
Description
1
SYNC
2
3
4
5
6
7
8
C
T
R
T
V
FB1
COMP
1
Sense
1
V
OUT1
Gnd
16
15
14
13
12
11
10
9
V
CC
V
REF
ENABLE
2
V
FB2
COMP
2
Sense
2
V
OUT2
Pwr Gnd
CS3865C
The CS3865C is a high perfor-
mance, fixed frequency, dual cur-
rent mode controller. It is used in
Off-Line and DC to DC converter
applications and require a mini-
mum number of external compo-
nents. This integrated circuit fea-
tures a unique oscillator for precise
duty cycle limit and frequency con-
trol, a temperature compensated
reference, two high gain error
amplifiers, two current sensing
comparators, and two high current
totem pole outputs ideally suited
for driving power MOSFETs. One
of the outputs V
OUT2
is switchable
via the ENABLE
2
pin.
Also included are protective fea-
tures consisting of input and refer-
ence undervoltage lockouts each
with hysteresis, cycle-by-cycle cur-
rent limiting, and a latch for single
pulse metering of each output.
The CS3865C has a 14V start volt-
age and is pin compatible with the
MC34065H.
Block Diagram
Rev. 12/16/96
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
A
Company
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