Pin Defin ition s
Pin Numb er Pin Name Pin Function Descriptio n
1 OVP Battery power supply mode
2 BATT Battery power supply
3 RSTOUT RSTOUT detection output
4 DEDSET DEDSET time setting
5 BDSW Booster transistor drive
6 ERRO Error amp output
7 ERRI Error amp input
8 SCP Short circuit protection setting
9 COSC Triangular wave output
10 N.C No connection
11 OPIN( Op-amp negative input
12 SVCC1 control circuit power supply
13 OPOUT Op-amp output
14 OPIN(+) Op-amp positive input
15 SVCC2 Pre-drive power supply
16 VREF Reference voltage
17 DI3 CH3 control signal input
18 DI4 CH4 control signal input
19 MUTE34 CH3, 4 mute
20 DI2 CH2 control signal input
21 MUTE2 CH2 mute
22 DI1 CH1 control signal input
23 BRAKE CH1 Brake
24 DO4(-) CH4 negative output
25 DO4(+) CH4 positive output
26 DO3(-) CH3 negative output
27 DO3(+) CH3 positive output
28 PGND Power unit power ground
29 DO2(+) CH2 positive output
30 DO2(-) CH2 negative output
31 DO1(+) CH1 positive output
32 DO1(-) CH1 negative output
33 CHGSET Charge current setting
34 RST RSTOUT inverting output
35 EMP Empty detection output
36 DVCC H-bridge power supply
37 PWM PWM transistor drive
38 CLKIN External clock input
39 START Boost DC/DC converter starting
40 STOP Boost DC/DC converter off
41 ADPVCC Charging circuit power supply
42 EMPSET Empty dection level converting
43 SGND Signal ground
44 FIL PWM phase compens
ation
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