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 No.09027EAT30 BD9130EFJ Description ROHMs 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 Symbol Rating Unit 1 VCC -0.3+7 * V Power Supply Voltage 1 PVCC -0.3+7 * V EN Voltage VEN -0.3+7 V SWITH Voltage VSW, VITH -0.3+7 V 1 SW Output Current ISW 2.6 * A 2 Power Dissipation 1 Pd1 0.5 * W 3 Power Dissipation 2 Pd2 3.76 * W Operating Temperature Range Topr -25+105 Storage Temperature Range Tstg -55+150 Maximum Junction Temperature Tjmax +150 1 * Pd, ASO, and Tjmax=150 should not be exceeded. 2 * Reduced by 4.0mW for increase in Ta of 1 above 25. 3 * 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) Limits Unit Parameter Symbol Min. Typ. Max. VCC 2.7 3.3 5.5 V Power Supply Voltage PVCC 2.7 3.3 5.5 V EN Voltage VEN 0 - VCC V 4 Output Voltage range VOUT 1.0 - 2.5* V 5 SW Average Output Current ISW - - 2.0* A 4 In case set output voltage 1.6V or more, VccMin. = Vout + 1.3V. 5 Pd and ASO should not be exceeded. www.rohm.com 2009.05 - Rev.A 1/14 2009 ROHM Co., Ltd. All rights reserved. Technical Note BD9130EFJ Electrical Characteristics BD9130EFJ (Ta=25, VCC=PVCC=3.3V, EN=VCC, R1=10k , R2=5k , unless otherwise specified.) Parameter Symbol Min. Typ. Max. Unit Conditions Standby Current ISTB - 0 10 A EN=GND Bias Current ICC - 250 450 A EN Low Voltage VENL - GND 0.8 V Stand-by Mode EN High Voltage VENH 2.0 VCC - V Active Mode EN Input Current IEN - 1 10 A VEN=3.3V Oscillation Frequency FOSC 0.8 1 1.2 MHz 1 Pch FET ON Resistance* RONP - 200 400 m PVCC=3.3V 1 Nch FET ON Resistance* RONN - 160 350 m PVCC=3.3V ADJ Reference Voltage VADJ 0.788 0.800 0.812 V ITH SINK Current ITHSI 10 20 - A VADJ=1.0V ITH Source Current ITHSO 10 20 - A VADJ=0.6V UVLO Threshold Voltage VUVLO1 2.400 2.500 2.600 V Vcc=3.3V 0V UVLO Hysteriesis Voltage VUVLO2 2.425 2.550 2.700 V Vcc=0V 3.3V Soft Start Time TSS 0.5 1 2 ms Timer Latch Time TLATCH 1 2 3 ms Output Short circuit Threshold Voltage VSCP - VOUT0.5 VOUT0.7 V VOUT=1.2V0V Block Diagram, Application Circuit VCC 4.90.1 EN Max5.25(include.BURR) 8 +6 (3.2) 4 -4 VCC 87 6 5 2 VREF 7 BD9130 Current PVCC 10F Current Comp Sense/ Protect R Q Lot No. S 12 3 4 + +0.05 0.17 -0.03 0.545 Output 2.2H Gm Amp. SLOPE CLK Driver 6 S Logic OSC SW +0.05 VCC M 0.08 1.27 0.42 -0.04 0.08 S UVLO Soft Start 5 TSD PGND SCP HTSOP-J8 (Unit:mm) 4 GND 1 3 ADJ ITH CITH RITH R2 R1 Fig.1 BD9130EFJ TOP View Fig.2 BD9130EFJ Block Diagram Pin No. & function table Pin No. Pin name PIN function 1 ADJ Output voltage detect pin 2 VCC VCC power supply input pin 3 ITH GmAmp output pin/Connected phase compensation capacitor 4 GND Ground 5 PGND Nch FET source pin 6 SW Pch/Nch FET drain output pin 7 PVCC Pch FET source pin 8 EN Enable pin(Active High) www.rohm.com 2009.05 - Rev.A 2/14 2009 ROHM Co., Ltd. All rights reserved. 1.0Max. 6.00.2 0.850.05 3.90.1 0.080.05 (2.4) 0.650.15 1.050.2