BD9328EFJ_15 Datasheet, PDF (1/23 Pages) Rohm – Synchronous Buck Converter with Integrated FET

Datasheet
4.2V to 18V, 2A 1ch
Synchronous Buck Converter with
Integrated FET
BD9328EFJ
General Description
The BD9328EFJ is a synchronous step-down
switching regulator with built-in two low-resistance
N-Channel MOSFETs. This IC can supply continuous
output current of 2A over a wide input range, and
provides not only fast transient response, but also
easy phase compensation because of current mode
control.
Features
 Uses Low ESR Output Ceramic Capacitors
 Low Standby Current
 380 kHz Fixed Operating Frequency
 Feedback Voltage
 0.9V ± 1.5%(Ta=25°C)
 0.9V ± 2.0%(Ta=-25°C to +85°C)
 Under Voltage Protection
 Thermal Shutdown
 Over Current Protection
Key Specifications
 Input Voltage Range:
4.2V to 18V
 Output Voltage Range:
0.9V to (V_IN x 0.7)V
 Output Current:
2A (Max)
 Switching Frequency:
380kHz(Typ)
 Hi-Side FET ON-Resistance:
0.15Ω(Typ)
 Lo-Side FET ON-Resistance:
0.13Ω(Typ)
 Standby Current:
15μA (Typ)
 Operating Temperature Range: -40°C to +85°C
Package
W (Typ) D (Typ) H (Max)
Applications
Distributed Power Systems
Pre-Regulator for Linear Regulators
HTSOP-J8
4.90mm x 6.00mm x 1.00mm
Typical Application Circuit
C_SS
0.1μF
C_PC
3300pF
R_PC
7.5kΩ
R_DW
10kΩ
R_UP
27kΩ
Thermal Pad
(to be shorted to GND)
V_IN = 12V
C_VC1
10μF
L
10µH
V_OUT = 3.3V
C_CO1
20μF
Figure 1. Typical Application Circuit
R_BS protect from VIN-BST short destruction.
〇Product structure : Silicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
〇This product has no designed protection against radioactive rays
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TSZ02201-0323AAJ00020-1-2
16.Feb.2015 Rev.003