CM3708AGIT CHAMP [Champion Microelectronic Corp.], CM3708AGIT Datasheet - Page 2

• Manufacturer Part Number: CM3708AGIT
• Description: 3A LOW-NOISE PWM STEP-DOWN REGULATOR
• Manufacturer: CHAMP [Champion Microelectronic Corp.]

PIN DESCRIPTION
BLOCK DIAGRAM
2007/02/13 Rev1.3
Pin No.
5,9,12
1,16
2,15
3,14
4,13
10
11
8
6
7
AGND
AGND
AGND
VREF
VIN1, VIN2
PVIN1, PVIN2
LX1, LX2
PGND1, PGND2
AGND
AGSEN
SD
VREF
NC
VFB
Symbol
12
5
9
7
AGSEN
10
NC
Voltage supply for internal circuits
Voltage supply for output power transistors
Inductor connection to the Drains of the internal
power MOSFETs
Ground for output power transistors
Ground for internal reference voltage divider
Ground for remote sensing
Shutdown active high. CMOS input level
V
No Connection
Feedback node for the V
8
OUT
Set Voltage
Error Amp
VIN1
Oscillator Ramp Generator
Champion Microelectronic Corporation
1
VFB
3A L
11
PW M Controller
Description
VIN2
16
OW
OUT
Protection
-N
Therm al
OISE
SD
6
PGND1
4
PWM S
PVIN1
2
PGND2
MOS
13
0.75 x
Min.
VIN
2
2
0
PVIN2
TEP
15
-D
Typ.
Operating Rating
2.5
2.5
OWN
14
VIN +
3
Max.
0.3V
CM3708A
VIN
5.5
5.5
R
5
5
EGULATOR
LX1
LX2
Page 2
Unit
V
V
V
V
V
V