HA13408

HA13408 9-Channel Power Driver ADE-207-206 (Z) 1st Edition July 1996 Description The HA13408 9-channel power driver IC is designed to drive dot matrix printer head. This IC can drive 9 pins without using any external components. HA13408 can be used for 2 system four-phase step drive, as every channel is used independently. Features High output current: 1.5 A/channel Max High sustaining voltage: 50 V Min Low saturation voltage Low supply current Low input current Compatible with TTL, LSTTL & 5 V CMOS Low thermal resistance package Zener diodes Truth Table Input Low High Open Output On Off Off HA13408 Block Diagram VCC2 VCC1 4 to 6 V 2 Out 1 IN 1 24 V ± 10% 1 4 Out 2 IN 2 3 6 Out 3 IN 3 7 8 5 GND IN 4 10 9 Out 4 Out 5 IN 5 12 11 Out 6 IN 6 14 15 13 GND IN 7 16 17 Out 7 Out 8 IN 8 18 21 Out 9 IN 9 20 23 19 22 GND GND TAB 2 HA13408 Peak Current and Turn-Off Time Figure 1 shows load current (Iout) and output terminal voltage (Vout) waveforms for the HA13408 driving an inductive load. Hi Low Vin ton T IP Iout 0 tsus VCE(sus) Vout VCC2 VCE(sat) Figure 1 Output Waveforms The peak output current (Ip) and sustain time (tsus) are obtained as follows; IP = VCC2 – VCE(sat) R 1 – exp – R ton L . VCC2 = . R 1 – exp – R ton L (1) tsus = L IP R ln 1 + R VCE(sus) – VCC2 (2) Where L is load self-inductance and R is load direct current resistance. For example, under the following conditions: L = 5 mH, R = 22 Ω Supply voltage VCC2 = 24 V, T...