BD9111NV_14 Datasheet, PDF (1/25 Pages) Rohm – Synchronous Buck Converter with Integrated FET

Datasheet
4.5V to 5.5V, 2.0A 1ch
Synchronous Buck Converter with
Integrated FET
BD9111NV
General Description
The BD9111NV is ROHM’s high efficiency step-down
switching regulator designed to produce a voltage as
low as 3.3V from a supply voltage of 5V. It offers high
efficiency by using pulse skip control technology and
synchronous switches, and provides fast transient
response to sudden load changes by implementing
current mode control.
Features
■ Fast Transient Response because of Current Mode
PWM Control System
■ High Efficiency for All Load Ranges because of
Synchronous Switches (Nch and Pch FET) and
SLLM^TM (Simple Light Load Mode)
■ Soft-Start Function
■ Thermal Shutdown and UVLO Functions
■ Short-Circuit Protection with Time Delay Function
■ Shutdown Function
Applications
Power Supply for LSI including DSP, Microcomputer
and ASIC
Typical Application Circuit
Key Specifications
 Input Voltage Range:
 Output Voltage:
 Output Current:
 Switching Frequency:
 Pch FET ON Resistance:
 Nch FET ON Resistance:
 Standby Current:
 Operating Temperature Range:
4.5V to 5.5V
3.3V(Typ)
2.0A (Max)
1MHz(Typ)
200mΩ(Typ)
150mΩ(Typ)
0μA (Typ)
-25°C to +105°C
Package
W(Typ) x D(Typ) x H(Max)
SON008V5060
5.00mm x 6.00mm x 1.00mm
VCC
CIN
L
VCC,PVCC
EN
SW
VOUT
VOUT
CO
ITH
GND,PGND
RITH
CITH
VOUT
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥14ï½¥001
○ This product has no designed protection against radioactive rays
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TSZ02201-0J3J0AJ00100-1-2
02.Oct.2014 Rev.002