Datasheet

PWP PACKAGE

(TOP VIEW)

VCP

CPP

CPN

GND

VCC

COM

PWMIN

DRV11873

www.ti.com

SLWS237 –NOVEMBER 2012

PIN DESIGNATION

Table 1. PIN DESCRIPTIONS

TERMINAL

I/O

(1)

DESCRIPTION

NAME NO.

FS 1 I Motor parameter adjustment pin. Pull low for lower speed motor and pull high for high speed motor.

FG 2 O Frequency generator output. The output have period equal to 6 electrical states (FG).

RD 3 O In the lock condition, RD output high through a pull up resistor to V

or 5 V.

VCP 4 O Charge pump output

CPP 5 O Charge pump conversion terminal

CPN 6 O Charge pump conversion terminal

W 7 O Phase W output

GND 8 - Ground pin

V 9 O Phase V output

U 10 O Phase U output

VCC 11 I Input voltage for motor and chip supply voltage

V5 12 O 5-V regulator output

COM 13 I Motor common terminal input

Over current threshold set up pin. A resistor set up current limit is connected between this pin and ground.

The voltage across the resistor will compare with the voltage converted from the bottom MOSFETs current.

CS 14 I If MOSFETs current is high, the part will get into the over-current protection mode by turning off top PWM

MOSFET and keeping the bottom MOSFET on.

limit

(A) = 6600/R

(Ω), Equation valid range: 500 mA < I

limit

< 2000 mA

FR 15 I Set high for reverse rotation. Set low or floating for forward rotation.

PWM input pin. The PWM input signal will be converted to a fixed switching frequency on MOSFET driver.

PWMIN 16 I

The PWM input signal resolution is less than 1%.

(1) I = input, O = output, N/A = not available