TMP821 Datasheet, PDF (1/13 Pages) Texas Instruments – TWO-PHASE HALF-WAVE MOTOR PREDRIVER

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TWO-PHASE HALF-WAVE MOTOR PREDRIVER
TMP821
SLDS152 – JANUARY 2008
FEATURES
1
• Built-In Lock Detection and Rotational Speed
Sensing Mechanisms
• Compact 8-Pin Package Reduces Number of
External Components Required
• Automatic Restart When Motor Lock Is
Undone
• Hall Amplifier Inputs Have Hysteresis
V_CC 1
BLOCK DIAGRAM
8 A2
DESCRIPTION
The TMP821 is a two-phase half-wave motor
Regulator
predriver suited for fan motors.
H+ 2
Hall
Amp
+
–
Logic
7 A1
AL 3
6 LD
H– 4
Lock Detect/
Auto Restart
5 GND
T_J
–40°C to 125°C
SOIC – D
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
Reel of 2500
TMP821DR
TOP-SIDE MARKING
TMP821
(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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated