RT8152C/D

4

DS8152C/D-04

April 2011

www.richtek.com

Pin No.

Pin Name

Pin Function

10

CM

Current Monitor Output. This pin outputs a voltage proportional to the output

current.

11

CMSET

Current Monitor Output Gain Externally Setting. Connect this pin with one

resistor to VSEN while CM pin is connected to ground with one another

resistor. In such way, current monitor output gain can be set by the ratio of

these two resistors.

12

VSEN

Positive Voltage Sensing Pin. This pin is the positive node of the differential

voltage sensing.

13

FB

Feedback. This is the negative input node of the error amplifier.

14

COMP

Compensation. This pin is the output node of the error amplifier.

15

ISEN_N

Negative input of the current sense.

16

ISEN

Positive input of the current sense.

17

TON

Connect this pin to VIN with one resistor.

18,

33 (Exposed Pad)

GND

Ground. The exposed pad must be soldered to a large PCB and connected

to GND for maximum power dissipation.

19

PVDD

Driver Power.

20

LGATE

Lower Gate Drive. This pin drives the gate of the low side MOSFETs.

21

PGND

Driver Ground.

22

PHASE

This pin is return node of the high side MOSFET driver. Connect this pin to

the high side MOSFET sources together with the low side MOSFET drains

and the inductor.

23

UGATE

Upper Gate Drive. This pin drives the gate of the high side MOSFETs.

24

BOOT

Bootstrap Power Input. This pin powers the high side MOSFET drivers.

Connect this pin to bootstrap capacitor.

25 to 31

VID6 to

VID0

Voltage ID. DAC voltage identification inputs for IMVP6.5.

The logic threshold is 30% of the VCCP as the maximum value for low state

and 70% of the VCCP as the minimum value for the high state.

32

VRTT

Voltage Regulator Thermal Throttling. This open-drain output pin will be

pulled low when the preset temperature level is exceeded.