Sanyo EP92H manual Motor Drivers for Cell Phones

Ultraminiature Package

Motor Drivers for Cell Phones

Motor Driver ICs for Cell Phones

Miniature Driver Series

Demand for camera cell phones is increasing rapidly not only in Japan, but in most markets around the world as well.

While compact, high image quality cameras are in demand in the cell phone market, there are also increasing desires for high- level camera functions such as mechanical shutters and autofocus.

SANYO developed even further their motor driver technologies nurtured through years of experience in the digital camera field and provides these technologies for use in camera cell phones as ultraminiature package motor drivers that require few external components.

Two-phase excitation motor drivers

LB1801CL	New
	product

■Camera Cell Phone Driver Lineup

	Shutter			Iris diaphragm	Focus			Zoom
	LB1941T/CL			LB1938T/CL
Voice Coil Motor	Constant Current			800 mA
				LB8681CL New product
		Constant Current 1.5 ch
Stepping Motor					LB1801CL New product			LB1801CL New product
					Comp..ININ			Comp..ININ
(2-phase excitation)
			LB8682PL				LB8686PL Under development
	Constant Current 1 ch + 2 ch						1.5 ch ✕ 2
Stepping Motor
					LB1800CL			LB1800CL
(1-2-phase excitation)
					Comp..ININ			Comp..ININ
PIEZO						Under development
(SIDM)					LV8071LG

For autofocus and zoom

●Supports an FR position detection output

●Low saturation voltage output

●Two-phase excitation driver

●Low-voltage drive

Drive is possible from 2.2 V

Compact Package

12-pin 2.8 mm Package

Block diagram

			VCC	∝F
			1
IN1		Thermal shutdown circuit	OUT1	Stepping Motor
	Control block
			OUT2
IN2
ENA
			OUT3
			OUT4
INM	R
	L		GND
1.3 V
	COMP		BIAS

Lens Driver IC for Cell Phones

LB1906CL

For Auto-Focus Motors

Saturated control and 1-2 phase excitation drivers

Block diagram
			VCC	1	∝F
60 kΩ				OUT1	Stepping motor
IN1
80 kΩ
				OUT2
60 kΩ	Control block
IN2
80 kΩ		shutdown circuit
60 kΩ
IN3
80 kΩ				OUT3
60 kΩ		Thermal		OUT4
IN4
80 kΩ
				GND

Constant current driver with H bridge ⋅ 1.5 ch

LB8683CL	Under
	development

For Shutter and Iris Diaphragm System

	Block diagram			Shutter		Iris
				OUT1	OUT2	OUT3
	VCC
	IN1	Reference	0.2 V +
		voltage
			–
		circuit		Constant
				current
		circuit	control amplifier
	IN2
	CPU
		Logic
	IN3
		Thermal protection circuit
		GND		RFS		RFG
						RF
Auto Foucus Piezo actuator
LV8071LG				Under
				development
For Auto-Focus Motors		Block diagram		Focus

PWM H bridge

Sequence circuit

ENA STEP M1

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