Si9987
Vishay Siliconix
Buffered H-Bridge
FEATURES
D D D D D D 1.0-A H-Bridge 500-kHz Switching Rate Shoot-Through Lim...
Si9987
Vishay Siliconix
Buffered H-Bridge
FEATURES
D D D D D D 1.0-A H-Bridge 500-kHz Switching Rate Shoot-Through Limited TTL Compatible Inputs 3.8- to 13.2-V Operating Range Surface Mount Packaging
APPLICATIONS
D D D D D D D VCM Driver Brushed Motor Driver Stepper Motor Driver Power Converter Optical Disk Drives Power Supplies High Performance Servo
DESCRIPTION
The Si9987 is an integrated, buffered H-bridge with TTL compatible inputs and the capability of delivering a continuous 1.0 A @ VDD = 5.0 V (room temperature) at switching rates up to 500 kHz. Internal logic prevents the upper and lower outputs of either half-bridge from being turned on simultaneously. Unique input codes allow both outputs to be forced low (for braking) or forced to a high impedance level. The Si9987 is available in an 8-Pin SOIC package, specified to operate over a
voltage range of 3.8 V to 13.2 V, and the commercial temperature range of 0 to 70_C (C suffix) and β40 to 85_C (D suffix).
FUNCTIONAL BLOCK DIAGRAM, PIN CONFIGURATION AND TRUTH TABLE
SO-8
SA GND VDD SB 1 2 3 4 Top View Shoot-Through Protection Logic 8 OUTA INA INB OUTB INA (7) (3) VDD
Si9987
7 6 5
TRUTH TABLE
INA
1 0 0 1
(6) INB
INB
0 1 0 1
OUTA
1 0 0 HiZ
OUTB
0 1 0 HiZ GND
(2)
(1) SA
(8)
(5) OUTPUT A B
(4) SB
ORDERING INFORMATION
Part Number
Si9987CY-T1 Si9987DY-T1 Si9987CY Si9987DY Document Number: 70864 S-02936βRev. C, 22-Jan-01
Temperature Range
0 to 70_C β40 to 85_C 0 to 70_C β40 to 85_C
Package
Tape and Reel
Bul...