Bipolar Voltage Detector ICs - Rohm

1 Product structure Silicon monolithic integrated circuit This product is not designed for protection against radioactive rays . 1/10 TSZ02201-0R7R0G300020-1-2 2016 ROHM Co., Ltd. All rights reserved. TSZ22111 14 001 Voltage Detector IC Series Bipolar Voltage Detector ICs BD47xx series General Description The BD47xx series is a Voltage Detector IC, developed to prevent system errors at transient state, when the power of CPU or logic circuit switches ON/OFF or in cases of momentary shut down. These ICs consist of three terminals (power supply, GND and reset output) to detect power supply voltages and outputs reset signals of various systems.

2 These ICs are ultra-compact and have low current consumption, making them ideal for portable products. Features High accuracy detection Low current consumption Very small package Open collector L reset output Package SSOP5 is similar to SOT-23-5 (JEDEC) Key Specifications Detection Voltage range: to (Typ.) steps High accuracy detection Voltage : 1% Low current consumption: A (Typ.) Operating temperature range: -40 C to +75 C Package SSOP5 x x Applications Circuits using microcontrollers or logic circuits that require a reset.

3 Typical Application Circuit Connection Diagram SSOP5 TOP VIEW Pin Descriptions PIN No. Symbol Function 1 Unconnected Terminal 2 SUB Substrate* 3 GND GND 4 VOUT Reset Output 5 VDD Power Supply Voltage *Substrate Pin should be connected with GND GND BD47xx series RESET GND VOUT VDD VDD CPU Micro-controller CL RL SUB GND VOUT VDD Lot. No Marking Datasheet 2/10 BD47xx series TSZ02201-0R7R0G300020-1-2 2016 ROHM Co., Ltd. All rights reserved. TSZ22111 15 001 Ordering Information Lineup Marking Detection Voltage Part Number Marking Detection Voltage Part Number Marking Detection Voltage Part Number B2 BD4746 BR BD4736 BH BD4726 B1 BD4745 BQ BD4735 BG BD4725 BZ BD4744 BP BD4734 BF BD4724 BY BD4743 B4 BD4733 BE BD4723 BX BD4742 BN BD4732 BD BD4722 BW BD4741 BM BD4731 BC BD4721 BV BD4740 BL BD4730 BB BD4720 BU BD4739 BK BD4729 BA BD4719 BT BD4738 BJ BD4728 BS BD4737 B3 BD4727 (SOT-23-5)

4 BD47xxG-TRPartReset Voltage ValuePackagePackaging and Number19 : : SSOP5forming stepTR : Embossed tape 46 : and reel 3/10 BD47xx series TSZ02201-0R7R0G300020-1-2 2016 ROHM Co., Ltd. All rights reserved. TSZ22111 15 001 Absolute maximum ratings Parameter Symbol Limit Unit Power Supply Voltage VDD to +10 V Output Voltage VOUT to +10 V Output Current Io 60 mA Power Dissipation *1 *2 Pd 540 mW Operation Temperature Range Topt -40 to +75 C Ambient Storage Temperature Tstg -55 to +125 C *1 Reduced by C when used over 25 C. *2 When mounted on ROHM standard circuit board (70mm 70mm , glass epoxy board).

5 Electrical characteristics (Unless Otherwise Specified Ta=25 C) Parameter Symbol Condition Limit Unit Min. Typ. Max. Detection Voltage VDET VDD=H L RL= VDET (T) VDET(T) VDET(T) V VDET= Ta=+25 C Ta=-40 C to 75 C - VDET= Ta=+25 C Ta=-40 C to 75 C - VDET= Ta=+25 C Ta=-40 C to 75 C - VDET= Ta=+25 C Ta=-40 C to 75 C - Temperature Coefficient Of Detection Voltage VDET/ T RL= Ta=-20 to+75 C Designed Guarantee - - %/ C Detection Hysteresis Voltage VDET RL= , VDD=L H L 30 50 100 mV Transfer Delay Time H tPLH CL=100pF RL= *1 - 20 50 s Transfer Delay Time L tPHL CL=100pF RL= *2 - 60 120 s Reset Output Voltage L VOL VDD=VDET(min.)

6 , RL= - V Circuit Current ON Icc1 VDD=VDET(min.) , RL= - A Circuit Current OFF Icc2 VDD=VDET(typ.) , RL= - A Operating Voltage Range VOPL RL= VOL - V Output Leak Current Ileak VDD=VOUT=10V - - A Reset Output Current L IOL Vo= , VDD=VDET(min.) - mA VDET(T):Standard Detection Voltage ( to , step R :Pull-up resistor to be connected between VOUT and power supply. CL:Capacitor to be connected between VOUT and GND. *1 tPLH:VDD=(VDET(typ.) ) (VDET(typ.)+ ) *2 tPHL:VDD=(VDET(typ.)+ ) (VDET(typ.) ) Design Guarantee. (Outgoing inspection is not done on all products) 4/10 BD47xx series TSZ02201-0R7R0G300020-1-2 2016 ROHM Co.)

7 , Ltd. All rights reserved. TSZ22111 15 001 Block Diagram BD47xx series Vref V OUT V DD GND 5 4 3 5/10 BD47xx series TSZ02201-0R7R0G300020-1-2 2016 ROHM Co., Ltd. All rights reserved. TSZ22111 15 001 Typical Performance Curves Circuit Current 012345678910012345678910 VDD SUPPLY Voltage VDD[V]CIRCUIT CURRENT ICC[ A] BD4729G Icc1= AIcc2= A0100200300400500600700800051015202530 OUTPUT Voltage VOUT[mV]"LOW" OUTPUT CURRENT IOL[ mA] BD4729G IOL= at Vo= Low Output Current I/O Characteristics 01234560123456 VDD SUPPLY Voltage VDD[V]OUTPUT Voltage VOUT[V] BD4729G VDET= VDET=50mVVDET= SUPPLY Voltage VDD[V]OUTPUT Voltage VOUT[mV]

8 BD4729G VOPL= Operating Limit Voltage BD4729 BD4729 BD4729 BD4729 6/10 BD47xx series TSZ02201-0R7R0G300020-1-2 2016 ROHM Co., Ltd. All rights reserved. TSZ22111 15 001 Typical Performance Curves continued Circuit Current when ON Ta[ C]CIRCU IT C URR ENT WH EN ON ICC1[mA] BD4729G Circuit Current when OFF Ta[ C]CIRCU IT C URR ENT WH EN OFF ICC2[mA] BD4729G Operating Limit Voltage Ta[ C]MINIMUM OPERATION VO L TAGE VOPL[V] BD4729G Detection Voltage Ta[ C]DETECTION Voltage VDET[V] BD4729G C~ ~ BD4729 BD4729 BD4729 BD4729 7/10 BD47xx series TSZ02201-0R7R0G300020-1-2 2016 ROHM Co.

9 , Ltd. All rights reserved. TSZ22111 15 001 Typical Performance Curves continued 0100200300400500012345"LOW" OUTPUT CURRENT IOL[mA]O UTPUT VO LTAGE VOUT[ mV] BD4729G Ta=25 CTa=75 CTa=-20 Output Saturation Voltage BD4729 8/10 BD47xx series TSZ02201-0R7R0G300020-1-2 2016 ROHM Co., Ltd. All rights reserved. TSZ22111 15 001 Application Information Explanation of Operation BD47xx series has threshold voltages namely the detection Voltage and release Voltage . As the voltages applied to the input reach their respective thresholds, the output switches from High to Low and from Low to High.

10 The release Voltage has a hysteresis that is the value of the detection Voltage +50mV (Typ.), preventing chattering in the output. When the input is greater than the release Voltage , the output is in a High state. When the input decreases from that state, the output switches to Low upon reaching the detection Voltage . When the input is less than the detection Voltage , the output is in a Low state. When the input increases from that state, the output switches to High upon reaching the release Voltage . Additionally, at least input Voltage is required for the circuit to function as expected.