9

HV9925

Figure 4. Switching Waveforms. CH1: V

Figure 5. Switch-On Transition – Leading Edge Spike.

CH1: VR

Figure 6. PWM Dimming – Rising Edge. CH4: 10×I

OUT

Figure 7. PWM Dimming – Falling Edge. CH4: 10×IOUT

Pin # Function Description

1

RSENSE Source terminal of the output switching MOSFET provided for current sense resistor connection.

2

GND

Common connection for all circuits.

3

PWMD PWM Dimming input to the IC.

4

VDD

Power supply pin for internal control circuits. Bypass this pin with a 0.1uF low impedance capacitor.

5

NC

No connection.

6

DRAIN

Drain terminal of the output switching MOSFET and a linear regulator input.

7

8

Pin Description