BD64550EFV_1 Datasheet, PDF (1/17 Pages) Rohm – System Driver for Ink Jet Printers

Motor Drivers for Printers
System Driver
for Ink Jet Printers
BD64550EFV
No.10016EAT03
●Description
This is 1-chip system motor driver integrating 2-channel H-bridge driver, step-down switching regulator with built-in power
DMOS, series regulator and reset output.
●Features
1) Low-on resistance output H-bridge driver (2-channel)
2) Constant-current chopping drive H-bridge driver
3) Switching regulator with built-in P-channel power DMOS FET
4) Soft start function: 23.6 ms (Typ.)
5) Reset release timer: 80 ms (Typ.)
6) 16 bit serial interface
7) Logic input interface (serial/parallel changeable)
8) Ultra thin type high heat dissipation HTSSOP-B40 package
9) Overcurrent protection in H-bridge driver block
10) Input voltage low voltage protection in H-bridge driver block
11) Overcurrent protection in switching regulator block
12) Output overvoltage protection in switching regulator block
13) Output low voltage protection in switching regulator block
14) Thermal shutdown
●Applications
Inkjet printer, photo printer, etc.
●Absolute Maximum Ratings (Ta=25℃)
Parameter
Symbol
Ratings
Unit
VM applied voltage
V_M
40
V
Logic input voltage
V_L
-0.4 ~ 5.5
V
RIN applied voltage
V_RIN
5.5
V
RNF voltage
V_RNF
0.5
V
Power dissipation
Pd
1600*
mW
Operating temperature range
Storage temperature range
Junction temperature
T_OPR
T_STG
T_jmax
-25 ~ +85
℃
-55 ~ +150
℃
150
℃
Motor driver output current (peak 500 ns)
I_omax (peak)
8.0
A
Motor driver output current (DC)
I_omax (DC)
2.5**
A
Switching regulator output current (DC)
I_omax
0.5
A
Series regulator output current (DC)
I_omax
0.25
A
* Reduced by 12.8 mW/℃ over 25 ℃, when mounted on a glass epoxy board (70 mm x 70 mm x 1.6 mm).
** Must not exceed Pd or ASO.
●Operating Conditions
Parameter
Symbol
Limit
Unit
VM operating power supply voltage range
SCLK max. operating frequency
Switching regulator output voltage range
V_M
F_SCLK
V_swreg
7 ~ 36
20
3~5
V
MHz
V
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2010.06 - Rev.A