BD9134MUV_14 Datasheet, PDF (1/25 Pages) Rohm – Synchronous Buck Converter with Integrated FET

Datasheet
4.5V to 5.5V, 3.0A 1ch
Synchronous Buck Converter with
Integrated FET
BD9134MUV
General Description
BD9134MUV is ROHM’s high efficiency step-down
switching regulator designed to provide 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/Nch 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
Key Specifications
 Input Voltage Range:
 Output Voltage Range:
 Output Current:
 Switching Frequency:
 High side FET ON-Resistance:
 Low side FET ON-Resistance:
 Standby Current:
 Operating Temperature Range:
4.5V to 5.5V
3.25V to 3.35V
3.0A(Max)
1MHz(Typ)
82mΩ(Typ)
70mΩ(Typ)
0μA (Typ)
-40°C to +105°C
Package
W(Typ) x D(Typ) x H(Max)
Applications
Power Supply for LSI including DSP, Microcomputer
and ASIC
Typical Application Circuit
VQFN020V4040
4.00mm x 4.00mm x 1.00mm
R_f
C₁
V_CC
C_IN
EN
PVCC
VCC
V_OUT
C_BST
L
ITH
GND, PGND
SW
R_ITH
C_O
C_ITH
V_OUT
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
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TSZ02201-0J3J0AJ00150-1-2
03.Oct.2014 Rev.002