CM3718 Datasheet, PDF (2/10 Pages) List of Unclassifed Manufacturers – 1.5A LOW NOISE PWM STEP DOWN REGULATOR

CM3718
1.5A LOW-NOISE PWM STEP-DOWN REGULATOR
PIN DESCRIPTION
Pin No. Symbol
CM3718
1 VIN
2 GND
3 SD
4 VREF
5 VFB
6 PGND
7 LX
8 PVIN
Description
Operating Rating
Min. Typ. Max. Uni
t
Voltage supply for internal circuits
2
2.5
5.5
V
Ground for internal reference voltage divider
CMOS input level
Shutdown level
Enable level
0.75 x VIN
0
VIN + 0.3 V
2.0
V_OUT Set Voltage
Feedback node for the V_OUT
Ground for output power transistors
1.1
VIN V
VREF
V
Inductor connection to the Drains of the internal power MOSFETs
5.5 V
Voltage supply for output power transistors
2
2.5
5.5
V
ORDERING INFORMATION
Part Number
CM3718IS
CM3718GIS*
*Note: G : Suffix for Pb Free Product
BLOCK DIAGRAM
Temperature Range
-40℃ to 85℃
-40℃ to 85℃
Package
8-Pin PSOP (PS08)
8-Pin PSOP (PS08)
VIN1
SD
1
3
PVIN
8
GND ₂
VREF ₄
Oscillator Ramp Generator
PWM Controller
Error Amp
Thermal
Protection
MOS
7 LX
2005/02/02 Rev. 1.5
5
VFB
6
PGND
Champion Microelectronic Corporation
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