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參數(shù)資料
| 型號： | CS52845EDR14 |
| 廠商： | ZF Electronics Corporation |
| 英文描述： | Current Mode PWM Control Circuit with 50% Max Duty Cycle |
| 中文描述： | 電流模式PWM控制電路的最大占空比為50％ |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 142K |
| 代理商： | CS52845EDR14 |
3
Package Pin Description
PACKAGE PIN #
PIN SYMBOL
FUNCTION
Electrical Characteristics: Unless otherwise stated, specifications apply for -40
≤
T
A
≤
85
C; V
CC
= 15V (Note 1); R
T
= 10k
;
C
T
= 3.3nF for sawtooth mode.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
I
Total Standby Current
Start-Up Current
Operating Supply Current
V
CC
Zener Voltage
0.5
11
34
1.0
17
mA
mA
V
V
FB
=V
Sense
=0V R
T
=10k
, C
T
=3.3nF
I
CC
=25mA
I
PWM Section
Maximum Duty Cycle
Minimum Duty Cycle
46
0
48
50
%
%
I
Undervoltage Lockout Section
Start Threshold
Min. Operating Voltage
7.8
7.0
8.4
7.6
9.0
8.2
V
V
After Turn On
Notes:
1. Adjust V
CC
above the start threshold before setting at 15V.
3. Parameter measured at trip point of latch with V
FB
=0.
V
COMP
2.These parameters, although guaranteed, are not 100% tested in production.
4. Gain defined as:
A =
; 0
≤
V
Sense
≤
0.8V.
V
Sense
8L
14L
SO Narrow
SO Narrow
1
1
COMP
Error amp output, used to compensate error amplifier.
2
3
V
FB
Error amp inverting input.
3
5
Sense
Noninverting input to Current Sense Comparator.
4
7
OSC
Oscillator timing network with Capacitor to Ground, resistor to V
REF
.
5
9
Gnd
Ground.
5
8
Pwr Gnd
Output driver Ground.
6
10
V
OUT
Output drive pin.
7
11
V
CC
Pwr
Output driver positive supply.
7
12
V
CC
Positive power supply.
8
14
V
REF
Output of 5V internal reference.
2,4,6,13
NC
No Connection.
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