BD8303MUV-E2 Datasheet, PDF (1/18 Pages) Rohm – Step-up/down, High-efficiency Switching Regulators (Controller type)

Large Current External FET Controller Type Switching Regulators
Step-up/down, High-efficiency
Switching Regulators (Controller type)
BD8303MUV
No.13028EBT02
● General Description
ROHM’s highly-efficient step-up/down switching regulator BD8303MUV generates step-up/down output including 3.3 V / 5 V
from 1 cell of lithium battery, 4 batteries, or 2 cells of Li batteries with just one inductor.
This IC adopts an original step-up/down drive system and creates a higher efficient power supply than conventional
Sepic-system or H-bridge system switching regulators.
● Features
1)Highly-efficient step-up/down DC/DC converter to be constructed just with one inductor.
2) Supports a wide range of power supply voltage range (input voltage: 2.7 V - 14.0 V)
3) Supports high-current application with external Nch FET.
4) Incorporates soft-start function.
5) Incorporates timer latch system short protecting function.
6) High heat radiation surface mounted package QFN16 pin, 3 mm × 3 mm
● Application
General portable equipment like DVC, single-lens reflex cameras, portable DVDs, or mobile PCs
● Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
VCC
15
V
VREG
7
V
Maximum applied power voltage
Between BOOT
1, 2 and SW 1, 2
7
V
Between BOOT
1, 2 and GND
20
V
SW1, 2
15
V
Power dissipation
Pd
620
mW
Operating temperature range
Topr
－25 to +85
°C
Storage temperature range
Tstg
－55 to +150
°C
Junction temperature
Tjmax
+150
°C
When installed on a 70.0 mm × 70.0 mm × 1.6 mm glass epoxy board. The rating is reduced by 4.96 mW/°C at Ta = 25°C or more.
● Operating Conditions (Ta = 25°C)
Parameter
Symbol
Standard value
MIN
TYP
MAX
Power supply voltage
VCC
2.7
－
14
Output voltage
VOUT 1.8
－
12
Oscillation frequency
fosc
0.2
0.6
1.0
* These specifications are subject to change without advance notice for modifications and other reasons.
Unit
V
V
MHz
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2013.07 - Rev.B