BD6753KV_15 Datasheet, PDF (6/20 Pages) Rohm – 6-Channel System Lens Driver

BD6753KV
Description of Blocks – continued
If the VLIM5 or VLIM6 pin is shorted to the VCC pin (or the same voltage as the VCC is set) and the SENSE3 pin or
SENSE4 and RNF3 pin or RNF4 are shorted to the ground, these channels can drive as a Full-ON type H-bridge like
other channels.
5. Charge Pump
Because the respective output transistors consist of power N-channel DMOS, the gate voltage VG should be higher
than the VM voltage to drive the high-side N-channel DMOS. The device includes the charge pump circuit that
generates VG voltage by connecting three external capacitors. The approximately (VM1 + (VCC x 2)) voltage is output
on the VG pin in the state with which a capacitor (0.1μF) is connected respectively between CP1 pin and CP2, CP3
and CP4, VG and GND. The charge pump's output voltage is approximately (VM1 + VCC) voltage when connecting a
capacitor (0.1μF) respectively between CP1 and CP2 pin, VG and GND pin, in addition to be shorted CP4 pin and VG,
and to be open CP3 pin. It is possible to set the different voltages to each VM pin (VM1 to VM4). In order to provide
better performance, the voltage difference between VG and VM must be 4.5V or above, and the VG voltage must not
exceed the absolute maximum rating of 18V.
Absolute Maximum Ratings (Ta=25°C)
Parameter
Symbol
Limit
Unit
Power Supply Voltage
VCC
-0.5 to +7.0
V
Motor Power Supply Voltage
VM
-0.5 to +12.5
V
Charge Pump Voltage
VG
18.0
V
Control Input Voltage
VIN
-0.5 to +VCC+0.5
V
Power Dissipation
Pd
1.12 ^{(Note 1)}
W
H-bridge Output Current
IOUT
-0.8 to +0.8 ^{(Note 2)}
A/ch
Storage Temperature Range
Tstg
-55 to +150
°C
Junction Temperature
Tjmax
150
°C
(Note 1) Reduced by 9.0mW/°C over 25°C, when mounted on a glass epoxy board (70mm x 70mm x 1.6mm)
(Note 2) Must not exceed Pd, ASO, or Tjmax of 150°C
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over
the absolute maximum ratings.
Recommended Operating Conditions
Parameter
Symbol
Min
Typ
Max
Unit
Power Supply Voltage
VCC
2.7
-
5.5
V
Motor Power Supply Voltage(VM1)
VM1
4.5
-
10.5
V
Motor Power Supply Voltage(VM2 to VM4) VM2 to VM4
2.0
-
10.5
V
Control Input Voltage
VIN
0
-
VCC
V
H-bridge Output Current^{(Note 3)}
IOUT
-0.5
-
+0.5
A/ch
Output Current Control Voltage Range
VLIM
0
-
0.5
V
PWM Signal Input Frequency
fPWM
0
-
0.1
MHz
Operating Temperature Range
Topr
-25
-
+75
°C
(Note 3) Must not exceed Pd, ASO, or Tjmax of 150°C
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TSZ22111・15・001
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TSZ02201-0H3H0B601380-1-2
09.Dec.2015 Rev.001