SI9987 Datasheet, PDF (1/5 Pages) Vishay Siliconix – Buffered H-Bridge

Buffered H-Bridge
Si9987
Vishay Siliconix
FEATURES
D 1.0-A H-Bridge
D 500-kHz Switching Rate
D Shoot-Through Limited
D TTL Compatible Inputs
D 3.8- to 13.2-V Operating Range
D Surface Mount Packaging
DESCRIPTION
The Si9987 is an integrated, buffered H-bridge with TTL
compatible inputs and the capability of delivering a continuous
1.0 A @ V_DD = 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
APPLICATIONS
D VCM Driver
D Brushed Motor Driver
D Stepper Motor Driver
D Power Converter
D Optical Disk Drives
D Power Supplies
D High Performance Servo
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 −40
to 85_C (D suffix). The Si9987 is available in lead free.
FUNCTIONAL BLOCK DIAGRAM, PIN CONFIGURATION AND TRUTH TABLE
S_A 1
GND 2
V_DD 3
S_{B 4}
SO-8
Si9987
8 OUTA
7 INA
6 INB
5 OUTB
Top View
TRUTH TABLE
IN_A
IN_B OUT_A OUT_B
1
0
1
0
0
1
0
1
0
0
0
0
1
1
HiZ
HiZ
(7)
IN_A
(6)
IN_B
(2)
GND
Shoot-Through
Protection Logic
V_DD
(3)
(1)
(8) (5)
(4)
S_A
OUTPUT S_B
AB
ORDERING INFORMATION
Part Number
Temperature Range
Package
Si9987CY-T1
Si9987DY-T1
0 to 70_C
−40 to 85_C
Tape and Reel
Si9987CY-T1—E3
Si9987DY-T1—E3
Si9987CY
Si9987DY
0 to 70_C
−40 to 85_C
0 to 70_C
−40 to 85_C
Lead Free Tape and Reel
Bulk (tubes)
Document Number: 70864
S-40132—Rev. D, 16-Feb-04
www.vishay.com
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