BD8355MWV Datasheet, PDF (1/21 Pages) Rohm – Regulators ICs for Digital Cameras and Camcorders System Switching Regulator IC with Built-in FET (10V)

Regulators ICs for Digital Cameras and Camcorders
System Switching Regulator IC
with Built-in FET (10V)
BD8355MWV
No.11036EAT20
●Description
BD8355MWV is a system switching regulator for Li 2 cell composed of 6 step-down synchronous rectification channels and
1 step-up Di rectification channel for LED application. Using a charge-pump system for high side FET driver and including
power MOSFET reduce the number of peripheral devices and realize high efficiency.
●Functions
1) Includes step-down 6 CH (CH1~6), step-up for LED 1CH (7CH) total 7CH included.
2) Includes Power MOSFET for all channels.
3) Includes Charge-pump circuit for high side driver.
4) Operating frequency of 750 kHz.
5) CH1 and 4 are common, 3 and 5 are also common, and others are possible to turn ON/OFF independently.
6) Includes Short Circuit Protection (SCP), Under Voltage Lock Out (UVLO) and Thermal Shut Down (TSD).
7) Includes Short Circuit Protection for CH6 (SCP6).
8) Includes Over Voltage Protection for CH7.
9) Thermally enhanced UQFN056V7070 package (7mm×7mm, 0.4mm pitch)
●Applications
For digital single-lens reflex camera, digital video camera
●Absolute maximum ratings（Ta＝25℃）
Parameter
Symbol
Ratings
Unit
VCC, VBAT, VHx1~6
-0.3~11.0
V
VLx1~6
-0.3~VHx
V
Power Supply Voltage
VLx7
HVREG
CTL14, CTL2,
CTL35, CTL6
CTL7
-0.3~28.0
V
-0.3~15.0
V
-0.3~11.0
V
-0.3~7.0
V
IomaxLx1, Lx4, Lx5
±1.5
A
Maximum Current
IomaxLx2, Lx3
±0.8
A
IomaxLx6
±2.0
A
IomaxLx7
+1.0
A
Power Dissipation
420 (*1)
mW
Pd
930 (*2)
mW
Operating Temperature
Topr
-25~+85
℃
Storage Temperature
Tstg
-55~+125
℃
Junction Temperature
Tjmax
125
℃
*1 Without external heat sink, power dissipation degrades by 4.2mW/℃ above 25℃.
*2 Power dissipation degrades by 9.3mW/℃ above 25℃, when mounted on a 74.2mm×74.2mm×1.6mmt grass epoxy PCB.
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2011.12 - Rev.A