參數(shù)資料
型號: CM3718
廠商: Electronic Theatre Controls, Inc.
英文描述: 1.5A LOW NOISE PWM STEP DOWN REGULATOR
中文描述: 1.5A的低噪音PWM降壓調(diào)節(jié)
文件頁數(shù): 2/10頁
文件大?。?/td> 361K
代理商: CM3718
CM3718
1.5A L
OW
-N
OISE
PWM S
TEP
-D
OWN
R
EGULATOR
PIN DESCRIPTION
Pin No.
Symbol
CM3718
Description
Operating Rating
Min.
Typ.
Max.
Uni
t
1
VIN
Voltage supply for internal circuits
2
2.5
5.5
V
2
GND
Ground for internal reference voltage divider
Shutdown level
0.75 x VIN
VIN + 0.3
3
SD
CMOS input level
Enable level
0
2.0
V
4
VREF
V
OUT
Set Voltage
1.1
VIN
V
5
VFB
Feedback node for the V
OUT
VREF
V
6
PGND
Ground for output power transistors
7
LX
Inductor connection to the Drains of the internal power MOSFETs
5.5
V
8
PVIN
Voltage supply for output power transistors
2
2.5
5.5
V
ORDERING INFORMATION
Part Number
Temperature Range
Package
CM3718IS
-40
to 85
8-Pin PSOP (PS08)
CM3718GIS*
-40
to 85
8-Pin PSOP (PS08)
*Note:
G : Suffix for Pb Free Product
BLOCK DIAGRAM
PWM Controller
Oscillator Ramp Generator
Error Amp
Thermal
Protection
MOS
VREF
GND
4
2
VFB
5
PGND
6
LX
7
PVIN
8
VIN1
1
SD
3
2005/02/02
Rev. 1.5
Champion Microelectronic Corporation
Page 2
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