參數(shù)資料
型號(hào): CM3708GIT
廠商: Electronic Theatre Controls, Inc.
英文描述: 3A LOOW NOISE PWM STEP DOWN REGULATOR
中文描述: 第3A LOOW噪音PWM降壓調(diào)節(jié)
文件頁數(shù): 2/6頁
文件大?。?/td> 270K
代理商: CM3708GIT
CM3708A
3A L
OW
-N
OISE
PWM S
TEP
-D
OWN
R
EGULATOR
PIN DESCRIPTION
Operating Rating
Typ.
Pin No.
Symbol
Description
Min.
Max.
Unit
1,16
VIN1, VIN2
Voltage supply for internal circuits
2
2.5
5
V
2,15
PVIN1, PVIN2
Voltage supply for output power transistors
2
2.5
5
V
3,14
LX1, LX2
Inductor connection to the Drains of the internal
power MOSFETs
5
V
4,13
PGND1, PGND2
Ground for output power transistors
5,9,12
AGND
Ground for internal reference voltage divider
8
AGSEN
Ground for remote sensing
6
SD
Shutdown active high. CMOS input level
0.75 x
VIN
VIN +
0.3V
V
7
VREF
V
OUT
Set Voltage
0
VIN
V
10
NC
No Connection
11
VFB
Feedback node for the V
OUT
5
V
BLOCK DIAGRAM
PWM Controller
Oscillator Ramp Generator
Error Amp
Thermal
Protection
MOS
VREF
AGND
12
AGND
AGND
7
9
5
VFB
11
PGND1
4
PGND2
13
LX2
14
LX1
3
PVIN2
15
PVIN1
2
SD
6
VIN2
16
VIN1
1
NC
10
AGSEN
8
2004/12/13 Champion Microelectronic Corporation
Page 2
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