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FEATURES

PW PACKAGE

(TOP VIEW)

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OUT2P

OUT2N

V

CC

VLIM

SENSE

RMI

VTH

CPWM

FG

RD

OUT1P

OUT1N

SS

SGND

6VREG

ROFF

CT

IN+

HB

IN–

DESCRIPTION/

TMP816

VARIABLE-SPEED SINGLE-PHASE FULL-WAVE FAN-MOTOR PRE-DRIVER

• Pre-Driver for Single-Phase Full-Wave Drive

–

PNP-NMOS is used as an external power

TR, enabling high-efficiency

low-consumption drive by means of the

low-saturation output and single-phase

full-wave drive. (PMOS-NMOS also

applicable)

• External PWM Input Enables Variable-Speed

Control

–

Separately-excited upper direct PWM

(f = 25 kHz) control method, enabling highly

silent speed control

ORDERING INFORMATION

• Current-Limiter Circuit

The TMP816 is a single-phase bipolar variable-speed

–

Chopper-type current limit at start

fan-motor predriver that works with an external PWM

• Reactive Current-Cut Circuit

signal. A highly efficient, quiet and low power

consumption motor driver circuit with a large variable

–

Reactive current before phase change is

speed can be implemented by adding a small number

cut to enable silent and low-consumption

of external components.

drive

This device is optimal for driving large-scale fan

• Minimum Speed Setting Pin

motors (with large air volume and large current) such

–

Minimum speed can be set with external

as those used in servers and consumer products.

resistor. The start assistance circuit

<br/>

enables start at extremely low speed.

<br/>

• Constant-Voltage Output Pin for Hall Bias

<br/>

<br/>

• Lock Protection and Automatic Reset

<br/>

Functions

<br/>

• Rotation Speed Detection (FG) and Lock

<br/>

Detection (RD) Outputs

<br/>

<br/>

ORDERABLE PART NUMBER

TOP-SIDE MARKING

–30°C to 95°C

TSSOP – PW

Reel of 2000

TMP816PWR

TMP816

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2)

Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.