High-accuracyLow current consumptionGeneral-purpose 54RESET IC1BD47XXG series DescriptionBD47XXG is a series of RESET ICs developed to prevent system error at transient state when the power of CPU and logic circuit switches ON/OFF or shutdown. These ICs consistof Power, GND, and reset output to detect power supply voltage of various systems and to output reset signal. These ICs are more practical for portable products because of their ultra-small package and low current consumption.
Features1) Detection voltage: 0.1V step line up 1.9~4.6V(Typ.)2) High-accuracy voltage detection Vs±2%(Max.)3) Low current consumption
4) \"L\" reset output of open collector5) Small SMP5 package ApplicationsPortable products, Equipments with CPU and logic circuit Series characteristicsPart No.BD4746GBD4745GBD4744GBD4743GBD4742GBD4741GBD4740GBD4739GBD4738GBD4737GBD4736GBD4735GBD4734GBD4733GBD4732GBD4731GBD4730GBD4729GBD4728GBD4727GBD4726GBD4725GBD4724GBD4723GBD4722GBD4721GBD4720GBD4719GDetection voltage Vs (V)Min4.5084.4104.3124.2144.1164.0183.9203.8223.7243.6263.5283.4303.3323.2343.1363.0382.9402.8422.7442.6462.5482.4502.3522.2542.1562.0581.9601.862Typ.4.6004.5004.4004.3004.2004.1004.0003.9003.8003.7003.6003.5003.4003.3003.2003.1003.0002.9002.8002.7002.6002.5002.4002.3002.2002.1002.0001.900Max.4.6924.5904.4884.3864.2844.1824.0803.9783.8763.7743.6723.5703.4683.3663.2643.1623.0602.9582.8562.7542.6522.5502.4482.3462.2442.1422.0401.938 Consumption current (µA Typ.) ICCHICCL1.51.61.51.61.51.61.61.51.51.61.51.61.51.61.51.61.51.61.51.61.51.61.51.61.51.61.61.51.61.51.51.61.51.61.51.61.51.61.51.61.51.61.51.61.51.61.51.61.51.61.51.61.51.61.51.6 Hysteresisvoltage (mV)231pin : N.C.2pin : SUB3pin : GND4pin : Vout5pin : Vcc2.9±0.2(5)(4)2.8±0.20.21.6+–0.1(UNIT:mm)(1)(2)(3)1.25MAX1.1±0.05±0.050.050.950.050.42+–0.040.1SMP5Operating outputcurrent (mA)0.2MIN0.050.13+–0.03Package5050505050505050505050505050505050505050505050505050505015151515151515151515151515151515151515151515151515151515SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5SMP5元器件交易网www.cecb2b.com
Absolute Maximum Ratings(Ta=25˚C)ParameterPower supply voltageOutput voltagePower dissipation (SMP5)Operating temperature rangeStorage temperature rangeSymbolVccPoPdToprTstgLimits–0.3 ~ +10–0.3 ~ +10150*–20 ~ +75–40 ~ +125UnitVVmW˚C˚CNote) The ratings shown above indicate breakdown limit of the pin and should not be regarded as the values that guarantee the operation.
* Derating : 1.5mW/˚C for operation above Ta=25˚C
Electrical characteristics(Unless otherwise noted; Ta=25˚C)ParameterDetection voltageDetection voltage temperature coefficientSymbolVsVs/∆T∆VsTPLHTPHLVOLIcc1Icc2VOPLILIOLMin.–2%—30———————3.0Typ.1.9~4.6±0.015020600.11.51.60.65—15.0Max.+2%—100501200.43.03.20.850.1—UnitV%/˚CmVµSµSVµAµAVµAmAConditionsRL=4.7kΩ, Vcc=HÆLRL=4.7KΩ, Ta=–20~+75˚CRL=4.7KΩ, Vcc=LÆHÆLCL=100PF, RL=4.7KΩCL=100PF, RL=4.7KΩ*1*2Hysteresis voltage\"H\" transfer delay time\"L\" transfer delay time\"L\" output voltageCircuit current (At ON mode)Circuit current (At OFF mode)Operating limit voltageOutput leak current\"L\" output currentVcc=VsMIN.–0.05V, RL=4.7KΩVcc=VsMIN.–0.05V, RL=∞Vcc=VsTYP./0.85V, RL=∞RL=4.7KΩ, VOL≥0.4VVcc=Vout=10VVo=0.4V, Vcc=VsMIN.–0.05V*1 TPLH : Vcc=(Vs typ.–0.4V)Æ(Vs typ.+0.4V)*2 TPHL : Vcc=(Vs typ.+0.4V)Æ(Vs typ.–0.4V)
Timing waveformVCC
VCCVS+∆VSVS
Transfer delay time measurement circuit0.22uFRL=4.7KΩ54VoutVOUT
0VVOHTPLHTPHLVCC
Vcc100pFBD47XXGNCSUBGND123VOL Application CircuitVDDVCC5Microcontroller4reset pinVoutVref3BD47XXGGND元器件交易网www.cecb2b.com
Characteristic diagram and Measurement circuit (When BD4729G is measured.)Current consumption
109.598.587.576.56)A5.5µ( 5ccI4.543.532.521.51Icc1=1.34µA0.5Icc2=1.46µA000.511.522.533.544.555.566.577.588.599.510Vcc (V)
AVccVOUTNC
VBD4729G10µFGNDOperating limit voltage
1000900800700600)Vm500( tuoV400300VOPL=0.675V200100000.250.50.7511.251.51.7522.252.52.75Vcc (V)
R=4.7KVccVOUTVBD4729G10µFVGNDI/O characteristic
654)V( tu3oV2Vs=2.9VVs=2.95V1dVs=50mV000.511.522.533.544.555.56Vcc (V)
R=4.7KVccVOUTVBD4729G10µFVGND'L' output current
800700600500)Vm400( tIOL=12.194mA@Vo=400mVuoV300200100002.557.51012.51517.52022.52527.53032.5Iol (mA)
VccVOUTABD4729G10µFVIOLGND元器件交易网www.cecb2b.com
Setting of the RESET signal delay timeDelay time can be set by capacitor CL and resistance RL connected to the output pin as shown below.CL is charged by RL when Vcc is rising. The delay time caused by charging is determined by the time constant of CL, RL and the threshold voltage of RESET pin. RESET IC discharges CL forcedlywhen Vcc is falling. The delay time of RESET signal is determined by adding the delay time of singleRESET IC to each time.
VCCVS+∆VSVS
VCC
VccBD47XXGVoutGNDRLCLVDDRESETGNDCPUMicro-controller0V
RESET
(=VOUT)
VOHTPLHVOL
TPHLTPLHPart number and Marking of samples(5)(4)MarkingBABBBCBDBEBFVoltage1.9V2.0V2.1V2.2V2.3V2.4V2.5V2.6V2.7V2.8VPart No.BD4719BD4720BD4721BD4722BD4723BD4724BD4725BD4726BD4727BD4728MarkingBKBLBMBNB4BPBQBRBSBTVoltage2.9V3.0V3.1V3.2V3.3V3.4V3.5V3.6V3.7V3.8VPart No.BD4729BD4730BD4731BD4732BD4733BD4734BD4735BD4736BD4737BD4738MarkingBUBVBWBXBYBZB1B2Voltage3.9V4.0V4.1V4.2V4.3V4.4V4.5V4.6VPart No.BD4739BD4740BD4741BD4742BD4743BD4744BD4745BD4746(1)(2)(3)Lot.NoBGBHB3BJMarking元器件交易网www.cecb2b.com
Appendix
NotesNo technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD.The contents described herein are subject to change without notice. The specifications for theproduct described in this document are for reference only. Upon actual use, therefore, please requestthat specifications to be separately delivered.Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuitsand deciding upon circuit constants in the set.Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of anythird party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices.Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer.Products listed in this document use silicon as a basic material.Products listed in this document are no antiradiation design.The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys).Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance.About Export Control Order in JapanProducts described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade ControlOrder in Japan.In case of export from Japan, please confirm if it applies to \"objective\" criteria or an \"informed\" (by MITI clause)on the basis of \"catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0
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