bd9153muv ROHM Co. Ltd., bd9153muv Datasheet
bd9153muv
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bd9153muv Summary of contents
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... BD9153MUV ●Description ROHM’s high efficiency dual step-down switching regulators and Linear Regulator Controller, BD9153MUV is a power supply designed to produce a low voltage including 3.3,0.8 volts from 5.5/4.5 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. ● ...
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... BD9153MUV ●Electrical Characteristics ◎(Ta=25℃ V =5V, EN=V ,unless otherwise specified Parameter Standby Current Bias Current EN Low Voltage EN High Voltage EN Input Current Oscillation Frequency Pch FET ON Resistance Nch FET ON Resistance FB Reference Voltage ITH sink curren1 ITH source current 1 ITH sink curren2 ITH source current 2 ...
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... ROHM Co., Ltd. All rights reserved. OUT1 Current FB1 Gm Amp Slope1 Soft EN Start1 ITH1 VREF OSC Current OUT2 Gm Amp FB2 Slope2 Soft Start2 CLK2 ITH2 DET RST Timer Fig.2 BD9153MUV Block Diagram Function Pin No. Pin name 13 GATE 14 FB3 15 AVCC 16 DET 17 RST 18 AGND 19 ITH2 20 FB2 21 22 SW2 23 ...
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... BD9153MUV ●Characteristics data【BD9153MUV】 3.5 Ta=25℃ 3.0 Io=1.5A 2.5 【VOUT1=3.3V】 2.0 【VOUT2=1.2V】 1.5 1.0 0.5 0 INPUT VOLTAGE:V [V] CC Fig.3 V – VOUT1,VOUT2 CC 3.40 【VOUT1=3.3V】 3.35 3.30 3.25 VCC=5V Io=0A 3.20 -40 - TEMPERATURE:Ta[℃] Fig. 6 Ta-VOUT1 1.2 1.0 0.8 0.6 0.4 VCC=5V 0.2 0.0 -40 - TEMPERATURE:Ta[ ℃ ] Fig.9 Ta- Fosc 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 VCC=5V 0.4 0.2 0.0 -40 - TEMPERATURE:Ta[℃ ...
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... BD9153MUV EN VOUT1 VOUT2 VCC=5.0V Ta=25℃ VOUT3 Fig.15 Soft start wave form ( ) Io =1.5A, Io =1.5A, Io =1. SW2 VOUT2 VCC=5.0V,Vout2=1.2V Ta=25℃ Fig.18 SW2 wave form (Io =0mA) 2 VOUT1 IOUT1 VCC=5.0V,Vout1=3.3V Ta=25℃ Fig.21 VOUT1 transient responce (Io 1.5A→0.5A/ 10usec) 1 VOUT3 IOUT3 VCC=5.0V,Vout3=2.5V Ta=25℃ Fig.24 VOUT3 transient responce (Io 0.5A→ ...
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... ON resistance of Highside MOS FET : 170mΩ(Typ.) ON resistance of Lowside MOS FET : 130mΩ(Typ.) Achieves efficiency improvement for heavier load. Offers high efficiency for all load range with the improvements mentioned above. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. BD9153MUV (Load response I VOUT1 Io1 Fig.26 100 ...
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... BD9153MUV Advantage 3：・Supplied in smaller package due to small-sized power MOS FET incorporated. ・Output capacitor Co required for current mode control: 22μF ceramic capacitor ・Inductance L required for the operating frequency of 1 MHz: 2.2μH inductor ・Incorporates FET + Boot strap diode Reduces a mounting area required. ...
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... BD9153MUV ●Operation BD9153MUV is a synchronous rectifying step-down switching regulator that achieves faster transient response by employing current mode PWM control system. It utilizes switching operation in PWM (Pulse Width Modulation) mode for heavier load, while it utilizes SLLM (Simple Light Load Mode) operation for lighter load to improve efficiency. ...
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... BD9153MUV ●Description of operations ・Soft-start function EN terminal shifted to “High” activates a soft-starter to gradually establish the output voltage with the current limited during startup, by which it is possible to prevent an overshoot of output voltage and an inrush current. ・Shutdown function With EN terminal shifted to “Low”, the device turns to Standby Mode, and all the function blocks including reference voltage circuit, internal oscillator and drivers are turned to OFF. Circuit current during standby is 0µ ...
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... BD9153MUV ・Short-current protection circuit with time delay function Turns OFF the output to protect the IC from breakdown when the incorporated current limiter is activated continuously for ) or more. The output thus held tuned OFF may be recovered by restarting re-unlocking the fixed time(T LATCH UVLO. ...
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... BD9153MUV ●Consideration on permissible dissipation and heat generation As BU9153MUV functions with high efficiency without significant heat generation in most applications, no special consideration is needed on permissible dissipation or heat generation. In case of extreme conditions, however, including lower input voltage, higher output voltage, heavier load, and/or higher temperature, the permissible dissipation and/or heat generation must be carefully considered ...
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... (ΔI : Output ripple current, and f: Switching frequency) L =0.3×1.5A=0.45A, for example,(BD9153MUV) L =2.02μ → 2.2[μ Output capacitor should be selected with the consideration on the stability region and the equivalent series resistance required to smooth ripple voltage. Output ripple voltage is determined by the equation (4)： ...
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... ESR reduces to half.) fz (Amp.) 13/18 Technical Note ) [A]・・・(5) I OUT 2 1.5A, (BD9153MUV) OUTmax.= ] RMS O × [Hz]←with lighter load 2π×R ×C OMax ...
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... BD9153MUV CITH2 R4 R3 Stable feedback loop may be achieved by canceling the pole fp (Min.) produced by the output capacitor and the load resistance with CR zero correction by the error amplifier (Amp.) (Min.) 1 2π×R ×C ITH ITH 5. Determination of VOUT1~3 output voltage The output voltage VOUT1~3 is determined by the equation (6)~(8): VOUT1=(R2/R1+1)× ...
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... Lay out CITH and RITH between the pins ITH and GND as neat as possible with least necessary wiring. ※ VQFN024V4040 (BD9153MUV) has thermal PAD on the reverse of the package. The package thermal performance may be enhanced by bonding the PAD to GND plane which take a large area of PCB. ...
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... BD9153MUV ●I/O equivalence circuit ・EN pin EN ・FB1,FB2,FB3,DET pin FB1,FB2,FB3,DET ・RST, VS pin RST,VS www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. ・SW1,SW2 pin SW1,SW2 ・ITH1,ITH2 pin ITH1,ITH2 ・GATE pin GATE Fig.43 I/O equivalence circuit 16/18 Technical Note 2009.08 - Rev.A ...
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... BD9153MUV ●Notes for use 1. Absolute Maximum Ratings While utmost care is taken to quality control of this product, any application that may exceed some of the absolute maximum ratings including the voltage applied and the operating temperature range may result in breakage. If broken, short-mode or open-mode may not be identified expected to encounter with special mode that may exceed the absolute maximum ratings requested to take necessary safety measures physically including insertion of fuses ...
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... BD9153MUV ●Ordering part number Part No. Part No. VQFN024V4040 4.0±0.1 1PIN MARK S 0.08 S 2.4±0.1 C0 0.75 +0.05 0.25 0.5 -0.04 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved Package MUV: VQFN24V4040 <Tape and Reel information> Tape Embossed carrier tape Quantity 2500pcs ...
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No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...