UPD16818 Datasheet, PDF (1/15 Pages) NEC – MONOLITHIC DUAL H BRIDGE DRIVER CIRCUIT

DATA SHEET
MOS INTEGRATED CIRCUIT
µPD16818
MONOLITHIC DUAL H BRIDGE DRIVER CIRCUIT
DESCRIPTION
The µPD16818 is a monolithic dual H bridge driver IC which uses N-channel power MOS FETs in its output 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 power-saving mode.
The µPD16818 is therefore ideal as the driver circuit of a 2-phase excitation, bipolar-driven stepping motor for the head
actuator of an FDD.
FEATURES
• Compatible with 3V-/5V- supply voltage
• Pin compatible with µPD16803
• Low ON resistance (sum of ON resistors of top and bottom MOS FETs)
RON1= 1.2 Ω (VM = 3.0 V)
RON2 = 1.0 Ω (VM = 5.0 V)
• Low current consumption: IDD = 0.4 mA TYP. (VDD = 2.7 V to 3.6 V)
• Stop mode function that turns OFF all output MOS FETs
• Drive current can be set in power-saving mode (set by external resistor)
• Compact surface mount package
ORDERING INFORMATION
Part Number
Package
µPD16818GS
20-pin plastic SOP (7.62 mm (300))
ABSOLUTE MAXIMUM RATINGS (TA = 25 °C)
Parameter
Symbol
Condition
Supply voltage Motor block
VM
Control block
VDD
Power
µPD16818GS
PD1
consumption
PD2
Instantaneous H bridge drive current
ID (pulse)
PW ≤ 5 ms, Duty ≤ 40 %
Input voltage
VIN
Operating temperature range
TA
Operation junction temperature
TJ (MAX)
Storage temperature range
Tstg
Rating
Unit
–0.5 to +7.0
V
–0.5 to +7.0
1.0^{Note 1}
W
1.25^{Note 2}
±1.0^{Note 2}
A
–0.5 to VDD + 0.5
V
0 to 60
°C
150
°C
–55 to +150
°C
Notes 1. IC only
2. When mounted on a glass epoxy printed circuit board (100 mm × 100 mm × 1 mm)
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
Document No. S11365EJ2V1DS00 (2nd edition)
Date Published September 2004 N CP(K)
Printed in Japan
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