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DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD168111A
MICROSTEP DRIVER FOR DRIVING CAMERA LENS
DESCRIPTION
The
µ
PD168111A is a monolithic 2-channel H bridge driver that consists of a CMOS controller and a MOS output
stage. It can reduce the current consumption and the voltage loss at the output stage compared with a conventional
driver using bipolar transistors, thanks to employment of a MOS process.
can be substantially reduced during operation.
This product is ideal for driving the motor of a digital still camera as it can switch over between two-phase
excitation driving and microstep driving, using a stepper motor.
This product employs a P-channel
MOSFET on the high side of the output stage, eliminating a charge pump. As a result, the circuit current consumption
FEATURES
O Two H bridge circuits employing power MOSFET
O Current feedback 64-step microstep driving and two-phase excitation driving selectable
O Motor control by serial data (6 words of 16-bit configuration)
Data is input with the LSB first.
Pulse cycle, number of pulses, and output current value can be set.
O Input logic frequency: 6 MHz MAX.
O 3 V power supply
Minimum operating power supply voltage V
DD
= 2.7 V
O Undervoltage lockout circuit
Shuts down internal circuitry at V
DD
= 1.7 V TYP.
O Constrained output leak current
Built-in the shut off circuit of V
M
pin output leak current at V
DD
= 0 V.
O 24-pin TSSOP
ORDERING INFORMATION
Part Number
Package
24-pin plastic TSSOP (5.72 mm (225))
µ
PD168111AMA-6A5-A
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. S16536EJ1V0DS00 (1st edition)
Date Published May 2003 NS CP(K)
Printed in Japan
2003
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