BD9895FV

1/4 STRUCTURE NAME OF PRODUCT TYPE Silicon Monolithic Integrated Circuit DC-AC Inverter Control IC ＢＤ９８９５ＦＶ ・2ch control with Half-Bridge ・Lamp current and voltage sense feed back control ・Sequencing easily achieved with Soft Start Control ・Circuit protection with Timer Latch ・Under Voltage Lock Out ・Over Voltage Protection ・Mode-selectable the operating or stand-by mode by stand-by pin ・BURST mode controlled by PWM and DC input ・Output linear Controllable Analog dimming by external DC voltage ・Synchronous operating the other several BD9895FV IC’s FUNCTION ○Absolute Maximum Ratings（Ta = 25℃） Parameter Supply Voltage Operating Temperature Range Storage Temperature Range Power Dissipation Maximum Junction Temperature * Symbol VCC Topr Tstg Pd Tjmax Limits 15 -40～+90 -55～+150 1062* +150 Unit V ℃ ℃ mW ℃ Pd derated at 8.5mW/℃ for temperature above Ta = 25℃ (When mounted on a PCB 70.0mm×70.0mm×1.6mm) 〇Recommended operating condition Parameter Supply voltage Output oscillation frequency BCT oscillation frequency Symbol VCC fout fBCT Limits 6.0～14.0 25～90 0.05～1.00 Unit V kHz kHz Status of this document The Japanese version of this document is the official specification. Please use the translation version of this document as a reference to expedite understanding of the official version. If these are any uncertainty in translation version of this document, official version takes priority. REV. C 2/4 ○Electric Characteristics（Ta=25℃，VCC=7V） Parameter （ （WHOLE DEVICE） ） Operating current Stand-by current （ （OVER VOLTAGE DETECT） ） FB over voltage detect voltage （ （STAND BY CONTROL） ） Stand-by voltage L Input voltage range of Slave setting Input voltage range of Master setting （ （TIMER LATCH） ） Timer Latch voltage Timer Latch current （ （BURST MODE） ） BOSC Max voltage BOSC Min Voltage BOSC constant current BOSC frequency （ （OSC BLOCK） ） MAX DUTY Soft start current IS COMP detect Voltage SS COMP detect voltage SRT ON resistance （ （UVLO BLOCK） ） Detect voltage (VCC_UVLO) Hysteresis width (UVLO) Operating voltage (VCC_UVLO) Hysteresis width (VCC_UVLO) （ （REG BLOCK） ） REG output voltage REG source current （ （FEED BACK BLOCK） ） IS threshold voltage ① IS threshold voltage ② VS threshold voltage IS source current 1 IS source current 2 VS source current VREF input voltage range （ （OUTPUT BLOCK） ） Ｐｃｈ output voltage Ｈ Ｎｃｈ output voltageＨ Ｐｃｈ output voltage L Ｎｃｈ output voltage L Ｐｃｈ output sink resistance Ｐｃｈ output source resistance Ｎｃｈ output sink resistance Ｎｃｈ output source resistance Drive output frequency （ （COMP BLOCK） ） Overr voltage detect Hysteresis width (COMP) （ （PROTECT CLOCK） ） FAIL-pin On resistor value R_FAIL － 200 400 （ SYNCRO BLOCK） （ ） CT_SYNC_IN_High input Voltage Range VCT_SYNC_IN_H 2.0 － VCC*0.8 CT_SYNC_IN_Low input Voltage Range VCT_SYNC_IN_L -0.3 － 1.5 CT_SYNC_IN Pull-up resistor RCT_SYNC_IN_pull_up 500 － － VCT_SYNC_IN VCC＊0.9 － VCC CT_SYNC_IN Self-oscillation voltage RCT_SYNC_OUT＿sink CT_SYNC_OUT sink resistor value － 150 300 RCT_SYNC_OUT＿source CT_SYNC_OUT source resistor value － 370 740 CT_SYNC_OUT_High output Voltage Range VCT_SYNC_OUT _H 2.8 3.1 3.4 CT_SYNC_OUT_Low output Voltage Range VCT_SYNC_OUT_L － － 0.5 SRT SYNC Exchange detect Voltage Vsrtc 0.5 0.8 1.1 （This product is not designed for normal operation with in a radio active environment.） Ω V V kΩ V Ω Ω V V V Symbol Icc1 Icc2 Vovf VstL VstH1 VstH2 Vcp Icp VburH VburL IBCT fBCT MAXDUTY Iss Visc Vssc RSRT Vcc_vuvlo ⊿Vcc_vuvlo Vuvlo ⊿Vuvlo VREG IREG Vis① Vis② Vvs Iis1 Iis2 Ivs VREF IN VoutPH VoutNH VoutPL VoutNL RsinkP RsourceP RsinkN RsourceN fOUT VCOMPH ⊿VCOMPH MIN. － － 2.20 -0.3 1.8 2.55 1.9 0.5 1.94 0.4 1.35/BRT 292.5 44.0 1.0 0.45 2.0 － 5.100 0.150 2.260 0.075 3.038 5.0 1.225 － 1.220 － 13.0 － 0.6 VCC-0.3 VCC-0.3 － － － － － － 57.9 2.4 0.040 Limits TYP. － － 2.40 － 2.0 1.0 2.0 0.5 1.5/BRT 300 48.0 2.0 0.50 2.2 200 5.300 0.200 2.340 0.100 3.100 － 1.250 VREFIN 1.250 － 20.0 － － VCC-0.1 VCC-0.1 0.1 0.1 5 8 5 8 60.0 2.5 0.060 MAX. 17.0 10 2.60 0.8 2.25 VCC 2.1 1.5 2.06 0.6 1.65/BRT 307.5 49.5 3.0 0.55 2.4 400 5.500 0.250 2.420 0.125 3.162 － 1.275 VIS① 1.280 1.5 27.0 1.0 1.6 － － 0.3 0.3 10 16 10 16 62.1 2.6 0.080 Unit mA μA V V V V V μA V V A Hz % μA V V Ω V V V V V mA V V V μA μA μA V V V V V Ω Ω Ω Ω KHz V V VREF pin:OPEN,REG is shorted VREF pin is supplied Conditions CT_SYNC_IN=Low CT_SYNC_IN=OPEN fBCT=0.3kHz fBCT=0.3kHz BRT=36kΩ BCT=0.048μF fout=60kHz DUTY=2.2V DUTY=0V、IS=0.5V Over 1.25V effective is not Isink = 10mA Isource = 10mA Isink = 10mA Isource = 10mA RT=15kΩ REV. C 3/4 〇Package Dimensions Device Mark BD9895FV １ Lot No. SSOP-B28 (Unit:mm) 〇Block Diagram 〇Pin Description 端子番号 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 端子名 N1 P1 CP REG FAIL VREF CT_SYNC_OUT CT_SYNC_IN RT SRT GND BCT BRT DUTY STB VS2 IS2 FB2 VS1 IS1 FB1 SS COMP VCC UVLO P2 N2 PGND 機能 FET driver for 1ch FET driver for 1ch External capacitor from CP to GND for Timer Latch Internal regulator output Protect clock output Reference voltage Output pin of CT synchronous signal Input pin of CT synchronous signal External resistor from SRT to RT for adjusting the triangle oscillator External resistor from SRT to RT for adjusting the triangle oscillator GROUND External capacitor from BCT to GND for adjusting the BURST triangle oscillator External resistor from BRT to GND for adjusting the BURST triangle oscillator Control PWM mode and BURST mode Stand-by switch, Master/Slave selection Error amplifier input④ Error amplifier input③ Error amplifier output② Error amplifier input② Error amplifier input① Error amplifier output① External capacitor from SS to GND for Soft Start Control Over voltage detector Supply voltage input External Under Voltage Lock OUT FET driver for 2ch FET driver for 2ch Ground for FET drivers REV. C 4/4 〇NOTE FOR USE １． When designing the external circuit, including adequate margins for variation between external devices and the IC.Use adequate margins for steady state and transient characteristics. ２． Recommended Operating Range The circuit functionality is guaranteed within of ambient temperature operation range as long as it is within recommended operating range. The standard electrical characteristic values cannot be guaranteed at other voltages in the operating ranges, however, the variation will be small. ３． Mounting Failures Mounting failures, such as misdirection or miscounts, may harm the device. ４． Electromagnetic Fields A strong electromagnetic field may cause the IC to malfunction. ５. The GND pin should be the location within ±0.3V compared with the PGND pin ６． BD9895FV has the short circuit protection with Thermal Shut Down System. When STB or Vcc pin re-supplied, They enables to cancel the latch. If It rise the temperature of the chip more than 170℃(TYP), It make the external FET OFF ７． Absolute maximum ratings are those values that, if exceeded, may cause the life of a device to become significantly shortened. Moreover, the exact failure mode caused by short or open is not defined. Physical countermeasures, such as a fuse, need to be considered when using a device beyond its maximum ratings. ８． About the external FET, the parasitic Capacitor may cause the gate voltage to change, when the drain voltage is switching. Make sure to leave adequate margin for this IC variation. ９． On operating Slow Start Control (SS is less than 2.2V), It does not operate Timer Latch. １０． By STB voltage, BD9895FV is changed to 3 states. Therefore, do not input STB pin voltage between one state and the other state (0.8～1.8,2.25～2.55). １１．The pin connected a connector need to connect to the resistor for electrical surge destruction. １２．This IC is a monolithic IC which (as shown is Fig-1)has P+ substrate and between the various pins. A P-N junction is formed from this P layer of each pin. For example, the relation between each potential is as follows, ○(When GND > PinB and GND > PinA, the P-N junction operates as a parasitic diode.) ○(When PinB > GND > PinA, the P-N junction operates as a parasitic transistor.) Parasitic diodes can occur inevitably in the structure of the IC. The operation of parasitic diodes can result in mutual interference among circuits as well as operation faults and physical damage. Accordingly you must not use methods by which parasitic diodes operate, such as applying a voltage that is lower than the GND(P substrate)voltage to an input pin. (PinA) Resistance (PinB) C Transistor (NPN) B E GND P＋ P N P substrate GND Parasitic diode N P＋ P substrate GND Parasitic diode (PinB) (PinA) B Parasitic diode GND Ｃ Ｎ Ｎ N N Ｂ CＣ EＥ GND Other adjacent components Parasitic diode Fig-1 Simplified structure of a Bipolar IC REV. C Notice Notes 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 of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. 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