AT5802
Preliminary
4-Channel driver + Power Controller
Features
˙4
channels of Power-Mos H-bridge drivers.
˙Built-in
DC/DC converter control circuit.
˙Built-in
reset circuit.
˙Built-in
VG booster circuit.
˙Built-in
voltage down regulator circuit.
˙Built-in
On/OFF function
˙Low
power consumption.
˙Direct
PWM drive system.
˙QFP44
package.
Description
The AT5802 is a 4-channel driver and power
controller for portable CD players on a single
chip. The driver block power supply uses the
on-chip switching regulator, making this
component an ideal choice for low-power sets.
Applications
Disc-man
Portable compact disc players (CDP)
Portable Mini disc player (MD)
Other portable compact disc media
Block Diagram
PGND2
PGND1
PVCC2
PVCC1
OUT2+
OUT3+
OUT4+
24
OUT1-
OUT2-
OUT3-
33
32
31
30
29
28
27
26
25
OUT4-
23
OUT1+
SPRT
SOFT
CT
DC_IN
REGB
REGO
GND
PGND3
LG
VG
34
PRE-DRIVER
35
PRE-DRIVER
PRE-DRIVER
PRE-DRIVER
22
FIL4
FIL3
FIL2
FIL1
VREF
IN4
IN3
IN2
IN1
RESET
MUTE1
21
36
20
37
19
38
REGULATOR
SWITCH
OUTPUT
18
39
VSYS
DETECT
17
40
16
41
15
42
43
PRE-DRIVER
POWER
SUPPLY
CONVERTER
DC/DC
CONVERTER
14
TRIANG WAVE
RESET
13
44
POWER
OFF
STARTER
MUTE1
MUTE34
12
1
SW
2
VSYS
3
4
EO
5
N.C.
6
N.C.
7
N.C.
8
START
9
OFF
10
CLK
11
MUTE34
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
1
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AIMTRON [ AIMTRON TECHNOLOGY ]
