UPD16803 Datasheet, PDF (1/12 Pages) NEC – MONOLITHIC DUAL H BRIDGE DRIVER CIRCUIT

DATA SHEET
MOS INTEGRATED CIRCUIT
µPD16803
MONOLITHIC DUAL H BRIDGE DRIVER CIRCUIT
DESCRIPTION
The µPD16803 is a monolithic dual H bridge driver circuit which uses N-channel power MOS FETs in its driver stage.
By employing the power MOS FETs for the output stage, this driver circuit has a substantially improved saturation voltage
and power consumption as compared with conventional driver circuits that use bipolar transistors.
In addition, the drive current can be adjusted by an external resistor in a power-saving mode.
The µPD16803 is therefore ideal as the driver circuit of the 2-phase excitation, bipolar-driven stepping motor for the head
actuator of an FDD.
FEATURES
• Low ON resistance (sum of ON resistors of top and bottom transistors)
RON1 = 1.5 Ω TYP. (VM = 5.0 V)
RON2 = 2.0 Ω TYP. (VM = 12.0 V)
• Low current consumption: IDD = 0.4 mA TYP.
• Stop mode function that turns OFF all output transistors
• Compact surface mount package: 20-pin plastic SOP (300 mil)
PIN CONFIGURATION (Top View)
C1H
1
C2L
2
VM1
3
1A
4
PGND
5
2A
6
VDD
7
IN1
8
IN2
9
INC
10
20
C1L
19
C2H
18
VG
17
1B
16
PGND
15
2B
14
VM2
13
RX
12
PS
11
DGND
Document No. S11452EJ2V0DS00 (2nd edition)
Date Published July 1997 N
Printed in Japan
©
1997