M50224FP

Rev.1.0, Sep.19.2003, page 2 of 9

Pin Configuration

1

10

11

20

DGND

VA

VK

AEOUT

SEL1

SEL2

SML1

SML2

VDDH

CA

CB

VDD

BCIN

PGBC

PG

OUT1

OUT2

OUT3

VB

SEL3

Outline : 20P2F

Block Diagram

CPU for control

Motor control signal

Circuit operation

selection

AE output

Thermometer output

A control input pin is the inverter input of a 100Kohm pull down. H -- it is active and functions

VDD

VDD

LOGIC

VB

1.6V ~ 3.5V

LOGIC

DGND

COMPARATOR

BIAS

SML2

SEL1

SML1

OUT2

OUT3

M2

PGBC

1.25V: Tcon

CH2

tantalum capacitor – indispensable

(5.0V)

( VB+3.5V)

VDD H

VDD

VDD

LOGIC

VDDH

TSD

Charge

Pump

VDD H

Film

BCIN

REFERENCE

T Proportion

REFERENCE

VK

VA

PD

I/V TRANSFORM

AMP

IS CANCEL

AMP

GAIN

AMP

GAIN

AMP

AEOUT

LOGIC

SEL2

PG

OUT1

M1

Zoom

CH1

RON: (op+Under)

Zoom: Max 1.1

Ω

Film : Max 1.1

Ω

VB

OSC

SEL3

CA

CB

10

uF

10uF

* The constant of external parts is an example.

47uH

10uF

2.2

Ω

100uF

0.012 uF

0.36uF