BD9873CP-V5E2 ROHM [Rohm], BD9873CP-V5E2 Datasheet
BD9873CP-V5E2
Related parts for BD9873CP-V5E2
BD9873CP-V5E2 Summary of contents
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... Simple Step-down Switching Regulators with Built-in Power MOSFET BD9873CP-V5,BD9874CP-V5 ● Description The BD9873,74CP-V5 single-channel step-down switching regulator incorporates a Pch MOSFET capable, as well as circuitry that eliminates the need for external compensation – only a diode, coil, and ceramic capacitor are required – ...
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... BD9873CP-V5,BD9874CP-V5 ●Operating Conditions(Ta=-40～+85℃) Parameter Symbol Input Voltage VCC Output Voltage Vo ●Electrical Characteristics（Unless otherwise noted, Ta=25℃,Vcc=12V,Vo=5V,STBY=3V） Parameter Output ON Resistance Efficiency Switching Frequency Load Regulation ΔVOLOAD Line Regulation Over Current Protection Limit Over Current Protection Limit ...
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... BD9873CP-V5,BD9874CP-V5 ●Block Diagram STBY ●Package Dimensions 3.2±0.1 +0.3 10.0 -0.1 BD987X Lot No 0.82±0.1 0.92 1.444 1.778 TO220CP-V5（Unit：mm） Fig.2 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. VCC 1 VREF PWM COMP DRIVER OSC 5 STBY CTL LOGIC TSD ...
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... BD9873CP-V5,BD9874CP-V5 ●Block Function Explanations ・ VREF Generates the regulated voltage from Vcc input, compensated for temperature. ・ OSC Generates the triangular wave oscillation frequency (900kHz) using an internal resistors and capacitor. Used for PWM comparator input. Error AMP ・ This block, via the INV pin, detects the resistor-divided output voltage, compares this with the reference voltage, then amplifies and outputs the difference. ・ ...
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... BD9873CP-V5,BD9874CP-V5 ●Reference data BD9873CP-V5 100 Ta=25℃ VCC=8V 70 VCC=12V 60 VCC=36V 0.5 1 1.5 IOUT [A] Fig.4 Efficiency-Load Current 5.15 VCC=12V 5.1 5.05 Ta=25℃ Ta=85℃ 5 4.95 Ta=-40℃ 4.9 4.85 0 0.5 1 1.5 IOUT [A] Fig.7 Output voltage- Load Current 3 VCC=12V 2.5 2 Ta=150℃ 1.5 Ta=25℃ 1 Ta=-40℃ 0.5 0 0.0 0.5 1.0 1.5 IO[A] Fig10 V(VCC-OUT)-Iout 5msec / div VOUT 500mV / div Fig ...
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... BD9873CP-V5,BD9874CP-V5 ●Reference data BD9874CP-V5 100 Ta=25℃ VCC=8V 70 VCC=12V 60 VCC=36V 0.5 1 1.5 2 2.5 IOUT [A] Fig.16 Efficiency - Load Current 5.15 VCC=12V 5.1 5.05 Ta=85 ℃ Ta=25 ℃ 5 4.95 Ta=-40 ℃ 4.9 4.85 0 0.5 1 1.5 2 2.5 IOUT [A] Fig.19 Output voltage - Load Current 3 VCC=12V 2.5 2 Ta=-40 ℃ 1.5 Ta=25 ℃ 1 0.5 Ta=150 ℃ 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 IO[A] Fig.22 V(VCC-OUT)-Iout 5msec / div ...
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... BD9873CP-V5,BD9874CP-V5 ●Application component selection and settings Inductor L1 A large inductor series impedance will result in deterioration of efficiency. OCP operation greater than 1.6A may cause inductor overheating, possibly leading to overload or output short. Note that the current rating for the coil should be higher than I Iout（ ...
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... When C3 is not available, overshoot or undershoot is possible in starting or in rapid change of load. Be sure to insert 0.47 μF. Resistor R1,R2 These resistors determine the output voltage: VOUT＝1.0V×(1 + R1/R2) Select resistors less than 10kΩ. BD9873CP-V5 ＜Recommended Components (Example)＞ Inductor L1＝100uH ： RCR1616（SUMIDA） Schottky Diode D1＝RB050LA-40（ROHM） ...
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... BD9873CP-V5,BD9874CP-V5 ●Power Dissipation 15 (3) 11.0W 10 (2) 6.5W 5 (1) 2. AMBIENT TEMPERATURE : Ta[C] AMBIENT TEMPERATURE : Ta[℃] ●Tj (tip junction temperature) calculating method It is impossible to measure the tip junction temperature Tj outside the IC, but it can be calculated by the formula shown below. Calculation method of tip junction temperature Tj Tj=(W× ...
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... BD9873CP-V5,BD9874CP-V5 ●I/O Equivalent Circuit 1Pin,FIN (VCC, GND) VCC OUT GND www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 2pin (OUT) 4pin (INV) VCC VCC INV 10/12 Technical Note 5pin (STBY) VCC STBY 2009.07 - Rev.A ...
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... BD9873CP-V5,BD9874CP-V5 ●Operation Notes 1) Absolute maximum ratings Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may result in IC deterioration or damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such damage is suffered. A physical safety measure such as a fuse should be implemented when use of the special mode where the absolute maximum ratings may be exceeded is anticipated ...
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... BD9873CP-V5,BD9874CP-V5 ● Part order number Type/No. Part No. TO220CP-V5 4.5±0.1 φ3.2±0.1 +0.3 +0.2 10.0 -0.1 2.8 -0.1 0.82±0.1 0.92 1.444 1.778 (2.85) 4.12 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved ― P Package TO220CP-V5 CP-V5 : 0.42±0.1 1.58 (Unit : mm) 12/12 Technical Note Packaging and forming specification Embossed tape and reel E2 : 2009 ...
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