4 Pin Description
4.1 Pin Definition
SOP8
SOP16
Pin Name
VIN
Description
1
2
3
4
5
6
1
4
7.0~500V high voltage input.
Current sense input pin.
Ground pin.
CS
5
GND
GATE
PWM
VDD
8
Driver for external power MOS.
PWM dimming input.
9
12
Regulated core supply.
Linear dimming input. If current sense threshold is required less than
0.25V, an external voltage can be applied to this pin.
7
13
14
LD
Ring oscillator bias input. When RT is connected to ground via a resistor,
the MG39U301 operates in constant frequency mode. When the resistor
is connected between RT & GATE, the MG39U301 operates in constant
off-time mode.
8
RT
2, 3,
6, 7,
-
NC
No connection.
10, 11,
15, 16
4.2 Pin Configuration
8
7
6
5
16
15
14
13
12
1
2
3
4
1
2
3
4
5
6
7
8
NC
RT
VIN
CS
VIN
NC
NC
CS
NC
RT
LD
LD
VDD
GND
GATE
PWM
8-pin SOP with
Thermal Pad
VDD
NC
GND
NC
11
10
NC
NC
9
PWM
GATE
16-pin SOP with
Thermal Pad
MEGAWIN
MG39U301 Data Sheet
5
MEGAWIN [ MEGAWIN TECHNOLOGY CO., LTD ]
