BD9862MUV-E2 Rohm Semiconductor, BD9862MUV-E2 Datasheet
BD9862MUV-E2
Specifications of BD9862MUV-E2
Related parts for BD9862MUV-E2
BD9862MUV-E2 Summary of contents
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... System Power Supply IC BD9862MUV ●Description The BD9862MUV is a 3ch system power supply for mobile TFT liquid crystal panels.Operable at VBAT=1.8V, CH2 & CH3 adopts the original PWM/PFM automatic switching control charge pump and realizes high efficiency in full-load range. ●Features 1) Input voltage range: 1.8V~4.5V (The input voltage can be 5. double charge pump is not used) ...
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... BD9862MUV ●Electrical Characteristics (unless otherwise specified,Ta=25℃,VBAT=2.5V) Parameter 【Starting circuit part】 Output voltage VBAT Voltage to start operation 【Soft start part】 CH1Soft start time CH2 Soft start time CH3 Soft start time 【Oscillation circuit 】 Switching regulator frequency Charge Pump Frequency 【 ...
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... BD9862MUV ●Power Dissipation Reduction 4.5 ①: Stand-alone IC ②: One-layer substrate 4.0 (Surface-layer heat release copper foil 0mm2) ③: Four-layer substrate ④ 3.56W (Surface and inside-layer heat release copper foil 10mm2) 3.5 (2, 3 layer heat release copper foil 5505mm2) ④: Four-layer substrate (All-layers heat release copper foil 5505mm2) 3 ...
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... BD9862MUV ●Reference Data(Unless specified Ta=25℃,VCC=2.5V,R 90 L=15uH L=4.7uH 100 Load current[mA] Fig.1 CH1Current Load to Efficiency (Vo1=10V) 3.6 3.59 3.58 3.57 3.56 3. Load current[mA] Fig.4 REGOUT Output Load Regulation 1.006 1.005 1.004 1.003 1.002 -40 - Ta[℃] Fig.7 INV1 Threshold Voltage Temperature Feature ...
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... BD9862MUV ●Reference data(Unless specified Ta=25℃,VCC=2.5V) 1.01 1.005 1 0.995 0.99 0.985 0.98 0.975 0.97 0.965 0.96 0.955 -40 - Ta[℃] Fig.13 CH1 Soft Start Temperature Feature 46 45.9 45.8 45.7 45.6 45.5 45.4 45.3 45.2 45.1 45 -40 - Ta[℃] Fig.16 CH2,CH3 Max Duty Temperature Feature ● ...
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... BD9862MUV ●Terminal Location Diagram ●Terminal Number and Terminal Name and Function Terminal Terminal Number Name 1 FB1 2 INV2 3 UVLOSET 4 VIN3 5 C3P 6 PGND2 7 C2N 8 VIN2A 9 VO2 10 C2P 11 VIN2B PGND1 VBAT 17 CPOUT 18 REGOUT 19 PWM 20 GND VREF 23 NON3 24 INV1 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...
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... BD9862MUV ●System Description BD9862MUV is a 3ch system power supply optimized for TFT liquid crystal displays. Features of each channel are explained as follows ○CH1 This is a voltage mode switching regulator with a built-in high voltage-resistant output FET. Capable of high-speed operation at the maximum switching frequency of 1.4MHz, and compatible with a high step-up ratio with Max Duty of 90%(typ.). ...
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... BD9862MUV ●Timing Chart 1) When Starting VBAT VBATUVLO release VBATUVLO解除 2 times charge pump 2倍チャージポンプ Start on 起動開始 CPOUT Regulator レギュレータ Start on 起動開始 REGOUT ...
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... BD9862MUV 3) Sample② SCP Operation When CH2 is Short Output short 出力短絡 Vo2 2V C2N SCP Timer operation SCPタイマー動作 SCP Capacitor SCPコンパレータ Output (Internal) 出力（内部） ...
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... BD9862MUV ●Method to select the application parts 1) Setting of output voltage The output voltage VOUT is set by dividing the resistance of the external resistor. CH1,CH2:VOUT=1+R2/R1 CH3:VOUT=-((R4/R3)+Voffset) R1: Feedback resistor (GND side), R2: Feedback resistor (VOUT side), R3: Feedback resistor (VREF side), R4: Feedback resistor (VOUT side) 2) Setting of the output inductor ...
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... BD9862MUV ●Operating Guidelines ・PWM terminal At Low the PFM mode skips the pulse of less than 7% On Duty also switched over to the PWM mode if a certain amount of load is reached or exceeded while in PFM mode. Moreover switched to PFM mode if the load becomes light. Please set the PWM terminal to High and use as the forced PWM mode if there is an influence of noise created by modulation of the switching frequency. ・ ...
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... BD9862MUV ●Sample of Recommended Circuit 1) Sample of Input voltage 1.8V~4.5V application Vin= 1.8~ 4.5V CPOUT CCPOUT 2.2uF REGOUT CREGOUT 2.2uF VREF RT 120kO PWM H:PWM L:PFM GND 91kO UVLOSET 110kO ・Recommended Parts L1 : NR4010T4R7M(TAIYO YUDEN RB161VA-20(ROHM DAN217U(ROHM) COUT1 : GRM31CB31C106KA88(MURATA) CIN : GRM219B30J106KE18(MURATA) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...
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... BD9862MUV 2) Sample of Input voltage 4.5V~5.5V application Vin= 4.5~ 5.5V CPOUT REGOUT CREGOUT 2.2uF VREF RT 120kO PWM H:PWM L:PFM GND 300kO UVLOSET 100kO ・Recommended Parts L1 : NR4010T4R7M(TAIYO YUDEN RB161VA-20(ROHM DAN217U(ROHM) COUT1 : GRM31CB31C106KA88(MURATA) CIN : GRM219B30J106KE18(MURATA) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved VBAT ...
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... BD9862MUV ●Input / Output Equivalent Circuit VBAT CN VBAT RT, VREF REGOUT RT,VREF VIN3, C3P VIN3 C3P ●Points for attention on PCB layout ①Place the resistors and capacitors, that are connected to RT, INV1, FB1, INV2, NON3 and VREF, close to the terminals to avoid being affected by the wirings, where switching is large, such as LX1 wiring and flying capacitor wiring etc. ...
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... BD9862MUV ●Notes for Use 1.) Absolute maximum ratings This is a high quality product, but if absolute maximum rating such as applied voltage and operating temperature range is exceeded, then deterioration or breakdown may result. Moreover, such destructive conditions as short mode or open mode can not be assumed particular mode such as exceeding the absolute maximum rating is assumed, consideration should be given to using physical safety measures such as a fuse ...
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... BD9862MUV ●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 -0.04 0.5 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package MUV: VQFN024V4040 <Tape and Reel information> Tape Embossed carrier tape Quantity 2500pcs E2 Direction ...
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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 ...