AA51882 Datasheet, PDF (7/8 Pages) Agamem Microelectronic Inc. – SERVO MOTOR CONTROLLER

PRELIMINARY
AA51882 _{Agamem Microelectronics Inc.}
SERVO MOTOR CONTROLLER
B. H-Bridge MOSFET Driver
C9
0.01uF
VS
16
15
CFP
VCC
OUT4 13
VS
MOT1 ₇
VIN 4
OUT2 11
Q1
MOT2 14
Q3
OUT3 12
C8 103pF
Q2
M _VR1
5KΩ
R7 ^Q4
1KΩ
OUT1 10
RX 1KΩ
RT
CT
POT CDB CST GND ^VREG 1
5
6
8
3
29
R2
18KΩ
C3
0.1uF
C1
0.1uF
C10
C2 ^0.001uF
R4 150KΩ
0.1uF
C4
0.22uF
C5
4.7uF
R9
1MΩ
R1
470KΩ
* When the servo is about to reach the target position, the servo maybe overshoot for speed issue.
There are two ways to suppress such dispensable action.
If MOT1 and MOT2 pins are connected to both side of servo (R9 is no need), you can try to reduce the
value of R1 to let servo make an instant stop on the target position. If MOT1 and MOT2 are floating for
PCB layout issue, R9 can be plugged and tuned to get the same efforts described before.
The application circuit is for reference only. The value of resistor and capacitor needs to be changed
and gets the best performance in various servos.
Please select low threshold voltage (Vt) MOSFET driver for the maximum driving capacity. If Vt is
higher, you should provide higher power supply voltage in order to turn on the MOSFET fully.
■ ORDERING INFORMATION
ORDER NO. PACKAGE
PACKING
Q’TY MARK CHART
AA51882A
TSSOP 16L TAPE & REEL 2,500ea
AA51882
XXXX
A
©Copyright Agamem Microelectronics Inc.
7
www.agamem.com.tw 2008/5/5
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.