SP6850
Green-Mode PWM Controller
PIN DESCRIPTION
SP6850D8TG
Pin
1
2
Symbol
OUT Gate driver output to drive the external MOSFET
VCC Supply Voltage in
Description
3
NC
Unconnected pin
Current sense. This pin senses the voltage across a resistor, to control PWM output. This pin
also provides current amplitude information for current-mode control.
This current is used to charge an internal capacitor, to determine the switching frequency.
Unconnected pin
4
CS
5
6
RT
NC
Voltage feedback. The pin provides the output voltage regulation signal., it provides feedback
to the internal PWM comparator, so that the PWM comparator can control the duty cycle.
GND Ground
7
8
COMP
SP6850S26RG
Pin
1
Symbol
GND Ground
Description
Voltage feedback. The pin provides the output voltage regulation signal., it provides feedback
to the internal PWM comparator, so that the PWM comparator can control the duty cycle
This current is used to charge an internal capacitor, to determine the switching frequency.
Current sense. This pin senses the voltage across a resistor, to control PWM output. This pin
also provides current amplitude information for current-mode control
2
3
4
COMP
RT
CS
5
6
VCC Supply Voltage in
OUT Gate driver output to drive the external MOSFET
BLOCK DIAGRAM
2007/04/10 Ver.3
Page 3
SYNC-POWER [ SYNC POWER CROP. ]
