BD9775FV-E2 Rohm Semiconductor, BD9775FV-E2 Datasheet
BD9775FV-E2
Specifications of BD9775FV-E2
Related parts for BD9775FV-E2
BD9775FV-E2 Summary of contents
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... Large Current External FET Controller Type Switching Regulator Step-down, High-efficiency Switching Regulators (Controller type) BD9011EKN , BD9011KV , BD9775FV ■ BD9011EKN, BD9011KV ●Overview The BD9011EKN/ 2-ch synchronous controller with rectification switching for enhanced power management efficiency. It supports a wide input range, enabling low power consumption ecodesign for an array of electronics. ...
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Parameter Input voltage 1 Input voltage 2 BOOT－SW voltage Carrier frequency Synchronous frequency Synchronous pulse duty Min OFF pulse ★This product is not designed to provide resistance against radiation. *1 After more than 4.5V, voltage range. *2 ...
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Ta=25℃) 100 5. 2.6V 3.3V 70 1. VIN=12V OUTPUT CURRENT：Io[A] Fig.1 Efficiency 1 0.816 0.812 0.808 0.804 0.800 0.796 0.792 0.788 0.784 ...
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VQFP48C pin numbers) VREG5 24(44) VCCCL2 31(5) CL2 30(3) BOOT2 29(2) 28(1) OUTH2 SW2 27(48) OUTL2 25(46) DGND2 26(47) FB2 21(39) SS2 19(37) COMP2 20(38) ●Pin configuration BD9011EKN（HQFN36V） OUTH2 28 BOOT2 ...
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BD9011KV（VQFP48C） SS2 37 COMP2 38 FB2 39 N.C 40 EXTVCC 41 N.C 42 N.C 43 VREG5 44 N.C 45 OUTL2 46 DGND2 47 SW2 Fig-15 ...
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VQFP48C pin numbers) SP8K2 (SLF12565：TDK) Vo(5V/3A) 10uH RB051 L-40 68kΩ 220uF (OS ｺﾝ) 13kΩ 15000pF 0.1uF There are many factors(The PCB board layout, Output Current, etc.)that can affect the DCDC characteristics. Please verify and confirm ...
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L1 (SLF12565：TDK) Vo(24V/1A) RB051L-40 27uH RSS Co1 065N03 1uF 220uF 1000pF 680 kΩ 5.1kΩ 1uF 1uF 1000pF 23.5kΩ 22000pF 10kΩ 0.1uF There are many factors(The PCB board layout, Output Current, etc.)that can affect the DCDC characteristics. Please verify and confirm ...
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Setting the output L value ΔI L Fig-17 VCC I L VOUT L Co Fig-18 Output ripple current ※Outputting a current in excess of the coil current rating will cause magnetic saturation of the coil and ...
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Feedback resistor design Please refer to the following equation in determining the proper feedback resistance. The recommended setting range between 10kΩ and 330kΩ. Resistance less than 10kΩ risks decreased power efficiency, while setting the resistance value ...
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Setting over current detection values The current limit value（ILimit）is determined by the resistance of the RCL established between CL and VCCCL. VIN VCCCL RCL Fig-23 There are 2 current limit function (ON/OFF control type ...
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When electrolytic or other high-ESR output capacitors are used: Phase compensation is relatively simple for applications employing high-ESR output capacitors (on the order of several Ω). In DC/DC converter applications, where LC resonance circuits are always incorporated, the phase margin ...
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GSM1 GSM2 Fig-33 （10）Schottky barrier diode selection V CC Fig-34 （11）Sequence function ●Circuit diagram VCC VREG5 OUTH1 BOOT1 VCC BOOT2 Vo1 SW1 OUTL1 DGND1 FB1 COMP1 SS1 DET2 STB EN1 ...
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VQFP48C) 1(13)，27(48)PIN（SW1，SW2） 29(2)，35(11)PIN（BOOT2，BOOT1） 28(1)，36(15)PIN（OUTH1，OUTH2） BOOT OUTH SW 300k 16(34)PIN（SYNC） VREG5 5k SYNC 1P 250k 10(25)，11(26)，12(27)PIN （STB，EN1，EN2） VCC STB EN 172.2k 100k 135.8k 17(35)PIN（LLM） VREG5A LLM 308k 22(41)PIN（EXTV，CC） 24(44)PIN（VREG5） VCC EXTVCC VCC 150k ...
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Exceeding the absolute maximum ratings for supply voltage, operating temperature or other parameters can damage or destroy the IC. When this occurs impossible to identify the source of the damage as a short ...
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Vcc and pin potential may be reversed, possibly causing internal circuit or element damage. For example, when the external capacitor is charged, the electric charge can cause a Vcc short circuit to the GND. ...
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PD(W) HQFN36V 1.0 0.8 ②0.875W 0.6 0.4 ①0.56W 0.2 0 AMBIENT TEMPERATORE：Ta [℃] ①：Stand-alone IC ②：Mounted on Rohm standard board （70mm x 70mm x 1.6mm glass-epoxy board ） ●Part order number B ...
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... BD9775FV is Switching Controller with synchronous rectification(BD9775FV is 1channel synchronous rectification) and wide input range. It can contribute to ecological design(lower power consumption) for most of electronic equipments. ●Features (BD9775FV) 1) 2channel Step-Down DC/DC FET driver 2) Synchronous rectification for channel 2 3) Able to synchronize to an external clock signal ...
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... Parameter Supply Voltage Oscillating Frequency Timing Resistance Timing Capacitance ●Electrical characteristics （Ta=25℃，VCC=13.2V, fosc=100kHz, CTL1=3V, CTL2=3V）(BD9775FV) Parameter Symbol 【Whole Device】 Stand-by Current Iccst Circuit Current Icc 【Reference Voltage】 ...
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Parameter Symbol 【PWM Comparator】 Threshold Voltage at 0% Vth0 Threshold Voltage Vth100 at 100% DTC Input Bias Current Idtc 【FET Driver】 Sink Current Isink Source Current Isource RonN ON Resistance RonP Rise Time Tr Fall Time Tf Driver’s Duty Cycle ...
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... VCC 14 ●Block Diagram (BD9775FV) Fig.1 ●FUNCTION EXPLANATION (BD9775FV) 1.DC/DC Converter ・Reference Voltage Stable voltage of compensated temperature, is generated from the power supply voltage (VCC). The reference voltage is 3.0V, the accuracy is ±1％. Place a capacitor with low ESR (several decades mΩ) between VREF and GND. ...
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B （VREGB） (VCC-5V) is generated from the power supply voltage. The voltage is for the driver of the main MOSFET switch. Place a capacitor with low ESR (several decades mΩ) between VREGB and PVCC. ・Oscillator Placing a resistor ...
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... UP INFOMATION (BD9775FV) 1)Simultaneously OFF Duty of MOSFETs for Synchronous Rectification The simultaneously OFF duty of both main MOSFET switch and synchronous rectification MOSFET is determined by resistance (Rsync) between SYNC and GND. See Fig Synchronous Rectification, insert RFB2-GND (RFB2-GND≒3×Rsync) between FB2 and GND, because it is possible to reduce overshoot(sea fig ...
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Oscillator Synchronization by External Pulse Signal At the operation the oscillator is externally synchronized, input the synchronization signal into Fin in addition to connect a resistor and a capacitor at RT and CT, respectively. Input the external clock pulse ...
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Time for Short Circuit Protection The time (tscp) from output short to latch activation is determined by the capacitor, Cscp, connected SCP pin. tscp ＝ 7.96 × 10 Short SCP to GND if SCP function is not being ...
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... Over Current Protection, Short Circuit Protection, Thermal Shut Down CTL1,2 SCP DTC1,2 0.7×fixed output voltage Vout1,2 Half short of output OCP detection level Iout1,2 Inactivate half-short OCP is activated by detecting 8 consecutive cycles ● I/O EQUIVALENT CIRCUIT (BD9775FV) FB1(1) VREGA VREGA VREF VREF INV1(2),INV2(10) VCC VCC VREF VREF INV1,2 INV1， ...
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... OUT1(25),OUT2H(23),VREGB(24) VCC VCC ● Operation Notes (BD9775FV) 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. ...
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Applications with modes that reverse VCC and pin potentials may cause damage to internal IC circuits. For example, such damage might occur when VCC is shorted with the GND pin while an external capacitor is charged recommended ...
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Part order number B D ROHM Part Code SSOP-B28 <Dimension> Type/No. <Tape and Reel information> Tape Embossed carrier tape Quantity 2000pcs Direction E2 (The direction is the 1pin of product is at the upper left ...
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Catalog No.08T672A '08.9 ROHM © ...
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Appendix 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 ...