BD9015KV-M Datasheet, PDF (1/31 Pages) Rohm – 2ch Synchronous Rectification Step-Down Controller

Datasheet
Switching Regulator with external FET
3.9 to 30V, 2ch Synchronous Rectification
Step-Down Controller
BD9015KV-M BD9016KV-M
General Description
The BD9015KV-M and BD9016KV-M are high perfor-
mance synchronous rectification switching controllers
with wide input range and dual channel output.
The synchronous rectification method comes with high
efficiency making controller ideal for eco-designs(low
power consumption) of numerous electronics.
All channels have enable pins, soft start functionality and
power good outputs. Startup and shutdown can be
controlled independently.
An integrated PLL circuit can be synchronized to an
external 250kHz to 600kHz clock signal.
Features
■ N channel MOSFET direct drive
■ Synchronous rectification for increased efficiency
■ Acceptable Low ESR ceramic capacitor at output
■ Integrated PLL circuit for external synchronization;
250kHz to 600kHz
■ Current mode control
■ High side MOSFET current sensing
■ Pre-bias functionality
■ Independent ON/OFF control for all channels
■ At Max Duty the oscillation frequency is slowed down
to 1/5, reducing the input/output voltage difference.
■ Low voltage and over voltage detection circuit at all
outputs
When the over voltage is detected, the L-side FET is
OFF (BD9015KV-M). The L-side FET is ON
(BD9016KV-M).
Low side FET is ON (BD9016KV-M)
■ Power good indicator pin (PGOOD)
■ Integrated overcurrent protection with self recovery.
Typical Application Circuit
Key Specifications
„ Input voltage range:
3.9 V to 30 V
„ Output voltage range:
0.8 V to 10 V
„ Accurate voltage reference:±1.5%(-40°C to +105°C)
„ Switching frequency:
250 kHz to 550 kHz
„ Shutdown current:
0μA (Typ)
„ Operating temperature range: -40°C to + 105 °C
Package
VQFP48C
W (Typ) x D (Typ) x H (Max)
9.00 mm x 9.00 mm x 1.60 mm
VQFP48C
Applications
■ Car audio, Car navigation
■ LCDTV, PDPTV, DVD, PC, etc..
5V/4A
BD9015KV/
BD9016KV
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit ○This product is not designed for protection against radioactive rays
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