Page 1 of 3
1. Overview
The HS2981 is an ignition controller IC for large power motorcycle. It has features of high
reliability, convenience and simple circuit.
Low number of external com ponents
Easy adjustment
Low quiescent current (Typ 15mA) and low power dissipation
Ignition time and power is set according to the m otor rotation speed
DIP24
2. Block Diagram and Pin Description
2.1 Block Diagram
2.2 Pin Description
Pin No. Symbol Description Pin No. Symbol Description
1 Vref1 Reference Voltage 1 13 GND GND
2 ADJV1 Voltage Adjustment 1 14 ADJVO1 Output Adjustment 1
3 Vref2 Reference Voltage 2 15 VO Output
4 ADJV2 Voltage Adjustmen2 16 ADJVO2 Output Adjustment 2
5 ADJV3 Voltage Adjustmen3 17 GND GND
6 Vref3 Voltage Adjustmen3 18 NC NC
7 ADJI1 Current Adjustment 1 19 Vin Input
8 ADJI2 Current Adjustment 2 20 NC NC
9 ADJI3 Current Adjustment 3 21 VCC Supply Voltage
10 ADJI4 Current Adjustment 4 22 DISCHG Discharge
11 ADJI5 Current Adjustment 5 23 CHG Charge
12 GND GND 24 Vref4 Reference Voltage 4
Bias Adjustment
Angle
ADJ
AMP
Output Pulse
Ignition
Pulse
Output
Ignition
Pulse
Generation
Pulse
ADJ
15
Vref
Vref
1416
2422
11109
87
1
19
2 3 4 5 623 20 18 17 13 12
21
Adjustment
Bias Adjustment
HSiN Semiconductor Pte Ltd www.hsin.com.sg
Ignition Controller for Motorcycle HS2981
Page 2 of 3
3. Electrical Characteristics
3.1 Absolute Maximum Ratings
Unless otherwise specified, Tamb= 25
Parameter Symbol Value Unit
Supply Voltage VCC 12 V
Power Dissipation PD 1.2 W
Operating Temperature Tamb -40 ~ 85
Storage Temperature Tstg 150
3.2 Electrical Characteristics
Unless otherwise specified, Tamb= 25 , VCC = 5V, V19 =5V Value
Parameter Symbol Test Conditions
Min Typ Max
Unit
VCC =4V 11
VCC =5V 10 15 20
Quiescent Current ICCQ VCC =7V 21
mA
Pin 1 Reference Voltage V1 V
19 =0V 4.4 V
Pin 6 Reference Voltage V6 V
19 =0V 0 V
Pin 2 Voltage V2 0.3 V
Pin 3 Voltage V3 V
19 =0V 0.1 V
Pin 4 Voltage V4 0.4 V
Pin 5 Voltage V5 0.3 V
Pin 7 Voltage V7 1.4 V
Pin 8 Voltage V8 1.4 V
Pin 9 Voltage V9 1.4 V
Pin 10 Voltage V10 1.3 V
Pin 1 1 Voltage V11 1.4 V
V14 Output Adjustment V14OL V
19 =0V 50 mV
V14 Output Adjustment V14OH 2.3 V
Output High Level V15OH V
19 =0V 1.0 1.6 V
Output Low Level V15OL 0.1 0.3 V
Pin 24 Voltage V24 10 mV
Input Low Level V22OL V
19 =0V 0.2 V
Input High Level V22OH 2.9 V
Input Low Level V23OL V
19 =0V 50 mV
Input High Level V23OH 2.9 V
Page 3 of 3
4. Application Circuit
5. Package Dimensions
12 345 6789101112
13
14
15161718192021222324
HS2981
78L05
Vin
Vs=12V
D2141
OUT
0.47uF 1k
5.6k
5.6k
8.2k
36k
110k
6.8k62k
68k
110k
6.8k
20k
2.2uF
0.1uF
0.047uF
33uF
0.047uF
6800pF
10uF
10uF
0.015uF
1uF
680pF
68k
1.8k
2.7k
20k
12k
1.6k
10k
160k
560k
27k
15k
20k
680
1N4007
1N4007
