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BD9302FP

Rohm
Part Number BD9302FP
Manufacturer Rohm
Description Step-down Switching Regulators
Published Apr 7, 2006
Detailed Description TECHNICAL NOTE Single-chip Type with Built-in FET Switching Regulator Series 2-output High-efficiency Step-down Switchin...
Datasheet PDF File BD9302FP PDF File

BD9302FP
BD9302FP

Overview
TECHNICAL NOTE Single-chip Type with Built-in FET Switching Regulator Series 2-output High-efficiency Step-down Switching Regulators with Built-in Power MOSFET BD9302FP Description The BD9302FP is a 2-channel step-down switching regulator controller with a 2.
5-MHz, 2-A power switch and available for 2.
5-MHz high speed switching operation, which facilitates settings of switching frequency with external resistance, supporting for a wide input voltage range of 6 to 18 V.
Furthermore, due to a low reference voltage of 0.
6 V, this BD9302FP is an L/C best suited to high-voltage input/low-voltage output applications, for example, to step down a voltage from 12 V to 1.
2 V.
Features 1) A wide input voltage range of 6 V to 18 V 2) Easy switching frequency setting in the range of 200 k to 2.
5 MHz.
3) Two built-in power switches of 0.
4 Ω, 2 A.
4) 180˚ phase shift 5) Built-in Under Voltage Lock Out circuit 6) Built-in overcurrent protection circuit 7) Built-in Thermal Shutdown circuit Use Power supply for DPS requiring two power sources ADSL modem/plasma display Audio devices Dec.
2008 Absolute maximum ratings (Ta=25˚C) Item Symbol Rating Power supply voltage Power dissipation Vcc Pd 20 1450* Operating temperature Topr -40 ~ +85 Storage temperature Tstg -55 ~ +150 Output current Io 2** Maximum junction temperature Tjmax 150 * Should be derated by 11.
6 mW/˚C at Ta=25˚C or more.
When mounted on a glass epoxy PCB of 70¥70¥1.
6 mm) ** Should not exceed Pd-value.
Recommended operating range (Ta=25˚C) Item Power supply voltage Output current Timing resistance Oscillation frequency Symbol Vcc Io RT Fosc Min 6 – 10 100 Limits Typ 12 – – – Max 18 1.
8 100 2500 Unit V mW ˚C ˚C A ˚C Unit V A kΩ kHz Electrical characteristics Electrical characteristics (Unless otherwise specified, Ta=25˚C, Vcc=12 V, RT=10 kΩ) Item Symbol [Triangular wave oscillator block] Min Limits Typ Max Unit Oscillation frequency Frequency variation FOSC FDVO 1800 – 2000 1 2200 – kHz %...


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