BD9329AEFJ-LB Datasheet, PDF (1/21 Pages) Rohm – 4.2V to 18V, 3A 1ch Synchronous Buck Converter integrated FET

Datasheet
4.2V to 18V, 3A 1ch
Synchronous Buck Converter integrated FET
BD9329AEFJ-LB
General Description
This is the product guarantees long time support in
Industrial market.
The BD9329AEFJ-LB is a synchronous step-down
switching regulator that integrates 2 low resistance
N-channel MOSFETs. It achieves 3A continuous
output current over a wide input supply range. Current
mode operation provides fast transient response and
easy phase compensation.
Features
„ Long Time Support Product for Industrial
Applications.
„ Low ESR Output Ceramic Capacitors are
Available
„ Low Standby Current during Shutdown Mode
„ 380 kHz Fixed Operating Frequency
„ Feedback voltage
¾ 0.9V ± 1.5%(Ta=25℃),
¾ 0.9V ± 2.0%(Ta=-25℃ to 85℃)
„ Protection Circuits
¾ Under Voltage Lockout Protection
¾ Thermal Shutdown
¾ Over Current Protection
Key Specifications
„ Input voltage range:
„ Output voltage range:
„ Output current:
„ Switching Frequency
„ Hi-side FET On-resistance:
„ Lo-side FET On-resistance:
„ Standby current:
„ Operating temperature range:
4.2V to 18V
0.9V to (Vin×0.7)V
3.0A (Max.)
380kHz(Typ.)
0.15Ω(Typ.)
0.13Ω(Typ.)
15μA (Typ.)
-40℃ to +85℃
Package
HTSOP-J8
(Typ.) (Typ.) (Max.)
4.90mm x 6.00mm x 1.00mm
Applications
Industrial Equipment
Distributed Power System
Pre-Regulator for Linear Regulator
HTSOP-J8
Typical Application Circuit
C_SS
0.1+0.05
μF
C_PC
3300pF
R_PC
7.5kΩ
R_DW
10kΩ
R_UP
27kΩ
Thermal Pad
(to be shorted to GND)
VIN 12V
C_VC1
10μF
L
10µH
VOUT 3.3V
C_CO1
20μF
※R_BS protect from VIN-BST short destruction.
Figure 1. Typical Application Circuit
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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TSZ02201-0323AAJ00320-1-2
27.Feb.2014 Rev.002