AA51883 Datasheet, PDF (1/7 Pages) Agamem Microelectronic Inc. – SERVO MOTOR CONTROLLER

AA51883 _{Agamem Microelectronics Inc.}
PRELIMINARY
SERVO MOTOR CONTROLLER
■ DESCRIPTION
The AA51883 is an integrated circuit to be applied on servo motor of radio controlled
operation. It provides some flexible functions to tune the servo. External PNP driver will be
chosen for servo motor application.
■ FEATURES
• Internal output NPN power transistor.
• Adjustable dead band range control by external capacitor.
• Fixed pulse width setting to provide start-up power and speed control
• Incorporates a protection circuit for "H-Bridge" driving configuration
■ APPLICATIONS
• Servo motor control.
• Radio controlled car, boat, and airplane.
• IA products (such as air-condition).
• Remote positioning.
■ BLOCK DIAGRAM
VIN 8
Directional
Logic
Control
Sawtooth Wave
& One Shot
Generator
Servo
Position &
Over-Time
Logic
CFP
VCC
2
3
PWM
Control
Pulse
Stretcher
Output
Driver
1 _EXP1
16 OUT1
13 _OUT2
12 EXP2
Voltage
Regulator
5 VREG
9
10
11
7
6
15
RT
CT
POT
CDB CST
GND
©Copyright Agamem Microelectronics Inc.
1
www.agamem.com.tw 2008/4/9
AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER
NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT
ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED
HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.