Document
Single-chip Type with Built-in FET Switching Regulator Series
Output 2A or More High-efficiency Step-down Switching Regulator with Built-in Power MOSFET
BD9130EFJ
No.09027EAT30
●Description ROHM’s high efficiency step-down switching regulator BD9130EFJ is a power supply designed to produce a low voltage including 1 volts from 5.5/3.3 volts power supply line. Offers high efficiency with our original pulse skip control technology and synchronous rectifier. Employs a current mode control system to provide faster transient response to sudden change in load. ●Features 1) Offers fast transient response with current mode PWM control system. 2) Offers highly efficiency for all load range with synchronous rectifier (Nch/Pch FET) TM and SLLM (Simple Light Load Mode) 3) Incorporates soft-start function. 4) Incorporates thermal protection and ULVO functions. 5) Incorporates short-current protection circuit with time delay function. 6) Incorporates shutdown function 7) Employs small surface mount package : HTSOP-J8 ●Use Power supply for LSI including DSP, Micro computer and ASIC ●Absolute maximum ratings Parameter Power Supply Voltage EN Voltage SW・ITH Voltage SW Output Current Power Dissipation 1 Power Dissipation 2 Operating Temperature Range Storage Temperature Range Maximum Junction Temperature
*1 *2 *3
Symbol VCC PVCC VEN VSW, VITH ISW Pd1 Pd2 Topr Tstg Tjmax
Rating -0.3~+7 *1 -0.3~+7 *1 -0.3~+7 -0.3~+7 2.6 *1 0.5 *2 3.76 *3 -25~+105 -55~+150 +150
Unit V V V V A W W ℃ ℃ ℃
Pd, ASO, and Tjmax=150℃ should not be exceeded. Reduced by 4.0mW for increase in Ta of 1℃ above 25℃. Reduced by 30.0mW for increase in Ta of 1℃ above 25℃. (when mounted on a board 70.0mm × 70.0mm × 1.6mm Glass-epoxy PCB)
●Operating Conditions (Ta=-25~+105℃) Parameter Power Supply Voltage EN Voltage Output Voltage range SW Average Output Current
*4 *5
Symbol VCC PVCC VEN VOUT ISW
Min. 2.7 2.7 0 1.0 -
Limits Typ. 3.3 3.3 -
Unit Max. 5.5 5.5 VCC 2.5*4 2.0*5 V V V V A
In case set output voltage 1.6V or more, VccMin. = Vout + 1.3V. Pd and ASO should not be exceeded.
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1/14
2009.05 - Rev.A
Free Datasheet http://www.datasheet4u.com/
BD9130EFJ
●Electrical Characteristics ◎BD9130EFJ (Ta=25℃, VCC=PVCC=3.3V, EN=VCC, R1=10kΩ, R2=5kΩ, unless otherwise specified.) Parameter Symbol Min. Typ. Max. Unit Standby Current ISTB 0 10 μA Bias Current ICC 250 450 μA EN Low Voltage VENL GND 0.8 V EN High Voltage VENH 2.0 VCC V EN Input Current IEN 1 10 μA Oscillation Frequency FOSC 0.8 1 1.2 MHz Pch FET ON Resistance*1 RONP 200 400 mΩ Nch FET ON Resistance*1 RONN 160 350 mΩ ADJ Reference Voltage VADJ 0.788 0.800 0.812 V ITH SINK Current ITHSI 10 20 μA ITH Source Current ITHSO 10 20 μA UVLO Threshold Voltage VUVLO1 2.400 2.500 2.600 V UVLO Hysteriesis Voltage VUVLO2 2.425 2.550 2.700 V Soft Start Time TSS 0.5 1 2 ms Timer Latch Time TLATCH 1 2 3 ms Output Short circuit Threshold Voltage VSCP VOUT×0.5 VOUT×0.7 V ●Block Diagram, Application Circ.