BD90532EFJ-CE2 Datasheet, PDF (1/23 Pages) Rohm – 2.69 to 5.5V, Fixed Output, 2.25MHz Synchronous Step-Down Converter

Datasheet
Secondary power supply series for automotive
2.69 to 5.5V, Fixed Output, 2.25MHz
Synchronous Step-Down Converter
BD9053xEFJ-C Series
●General Description
The BD9053xEFJ-C series is a synchronous
rectification type step-down DC/DC converter with a
2.25MHz fixed frequency that operates in with an input
voltage range of 2.69V-5.5V. It has an integrated
feedback resistor that supplies a fixed output voltage
of 1.2V/1.5V/1.8V and a phase compensation constant.
Applications can be created with a minimum of three
external components. Moreover, the integrated Pch
and Nch output MOSFET can supply a maximum output
current of 3A.
●Features
■ Integrated output feedback resistors and phase
compensation network, contributes to minimize
external components for the applications.
■ Excellent load response through current mode
control
■ Integrated Pch and Nch output MOSFET
■ Integrated overcurrent protection with auto-reset
■ Integrated output overvoltage detection/
short-circuit detection
■ Integrated TSD and UVLO
■ Light load mode/PWM fixation operation selection
pin
●Key Specifications
■ Input voltage range
■ Output voltage
BD90532EFJ-C
BD90535EFJ-C
BD90538EFJ-C
■ Output voltage accuracy
■ Operating frequency
■ Maximum output current
■ Circuit current at standby
■ Operational temperature
range
2.69V～5.5[V]
1.2 [V](Typ.)
1.5 [V](Typ.)
1.8 [V](Typ.)
±2.0[%](-40～125°C)
2.25 [MHz] (Typ.)
3.0 [A] (Max.)
0[µA](Typ., 25°C)
-40～+125°C
●Package
HTSOP-J8
4.90 ㎜×6.00 ㎜×1.00 ㎜
●Applications
■ Automotive equipment
■ Car audio and navigation
■ TV
■ Other electronic equipment
●Typical application circuit
100
90
Light Load MODE
80
10µF
1µF
1.0µH
70
60
22µF
50
X4
40
PWM MODE
30
Figure 1. Typical application circuit
(BD90535EFJ-C, VIN=5V, IOUT=3A)
20
10
0
0.01
VIN=5V
Figure 1 CIRCUIT
0.10
1.00
LOAD CURRENT [A]
10.00
Figure 2. Efficiency (BD90535EFJ-C)
○Product structure：Silicon monolithic integrated circuit ○This product is not designed to be radiation resistant.
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20 .SEP.2012 Rev.002