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TECHNICAL NOTE

Voltage Detector IC Series 

Standard CMOS 
Voltage Detector IC 

BD48

□□

G/FVE

BD49

□□

G/FVE Series 

 

General Description 

ROHM’s BD48

□□

G/FVE and BD49

□□

G/FVE series are highly accurate, low current consumption reset IC series. The lineup was 

established with tow output types (Nch open drain and CMOS output) and detection voltages range from 2.3V to 6.0V in increments of 0.1V, 
so that the series may be selected according the application at hand. 

 

Features 

1

  Detection voltage: 2.3V to 6.0V (Typ.), 0.1V steps 

2

  High accuracy detection voltage: ±1.0% 

3

  Ultra-low current consumption: 0.8µA (Typ.) 

4

  Nch open drain output (BD48

□□

G/FVE), CMOS output (BD49

□□

G/FVE) 

5

  Compact packages VSOF5: BD48

□□

FVE, BD49

□□

FVE 

  

SSOP5: 

BD48

□□

G, BD49

□□

 

Applications 

All electronic devices that use microcontrollers and logic circuits 

 

Selection Guide 

 
 

Lineup 

Marking 

Detection 

Voltage 

Part 

Number 

Marking 

Detection

Voltage 

Part 

Number

Marking 

Detection

Voltage 

Part 

Number 

Marking 

Detection 

Voltage 

Part 

Number 

EW 6.0V BD4860 EB  4.1V BD4841

GW  6.0V BD4960 GB  4.1V BD4941 

EV 5.9V 

BD4859 EA  4.0V BD4840

GV  5.9V BD4959 GA  4.0V BD4940 

EU 5.8V 

BD4858 DV  3.9V BD4839

GU 5.8V 

BD4958 

FV  3.9V 

BD4939 

ET 5.7V 

BD4857 DU  3.8V BD4838

GT  5.7V BD4957 FU  3.8V BD4998 

ES 5.6V 

BD4856 DT  3.7V BD4837

GS 5.6V 

BD4956 

FT  3.7V 

BD4937 

ER 5.5V 

BD4855 DS  3.6V BD4836

GR 5.5V 

BD4955 

FS  3.6V 

BD4936 

EQ 5.4V 

BD4854 DR  3.5V BD4835

GQ  5.4V BD4954 FR  3.5V BD4935 

EP 5.3V 

BD4853 DQ  3.4V BD4834

GP 5.3V 

BD4953 

FQ  3.4V 

BD4934 

EN 5.2V 

BD4852 DP  3.3V BD4833

GN 5.2V 

BD4952 

FP  3.3V 

BD4933 

EM 5.1V 

BD4851 DN  3.2V BD4832

GM 5.1V 

BD4951 

FN  3.2V 

BD4932 

EL 5.0V 

BD4850 

DM  3.1V BD4831

GL 5.0V 

BD4950 

FM  3.1V 

BD4931 

EK 4.9V 

BD4849 DL  3.0V BD4830

GK 4.9V 

BD4949 

FL  3.0V 

BD4930 

EJ 4.8V 

BD4848 

DK  2.9V BD4829

GJ 4.8V 

BD4948 

FK  2.9V 

BD4929 

EH 4.7V 

BD4847 DJ  2.8V BD4828

GH 4.7V 

BD4947 

FJ  2.8V 

BD4928 

EG 4.6V 

BD4846 DH  2.7V BD4827

GG 4.6V 

BD4946 

FH  2.7V 

BD4927 

EF 4.5V 

BD4845 

DG  2.6V BD4826

GF 4.5V 

BD4945 

FG  2.6V 

BD4926 

EE  4.4V BD4844 DF  2.5V BD4825

GE 4.4V 

BD4944 

FF  2.5V 

BD4925 

ED 4.3V 

BD4843 DE  2.4V BD4824

GD 4.3V 

BD4943 

FE  2.4V 

BD4924 

EC 4.2V 

BD4842 DD  2.3V BD4823

GC 4.2V 

BD4942 

FD  2.3V 

BD4923 

2007.Apr. 

Number

Specifications Description 

 

Output Circuit 

Format 

8

Open Drain Output 

9

CMOS Output 

 

Detection 

Voltage 

Example: Displays VS over a 2.3V to 6.0V   
range in 0.1V increments.   
(2.9V is marked as “29”) 

 Package 

G

SSOP5 / FVE: VSOF5 

 

Part Number

BD4

 

 

 

 

 

Summary of Contents for BD48**FVE Series

Page 1: ...D4940 EU 5 8V BD4858 DV 3 9V BD4839 GU 5 8V BD4958 FV 3 9V BD4939 ET 5 7V BD4857 DU 3 8V BD4838 GT 5 7V BD4957 FU 3 8V BD4998 ES 5 6V BD4856 DT 3 7V BD4837 GS 5 6V BD4956 FT 3 7V BD4937 ER 5 5V BD4855...

Page 2: ...VS T 100 ppm Ta 40 to 105 Designed Guarantee Hysteresis Voltage VS VS 0 03 VS 0 05 VS 0 08 V VS 1 1V RL 470k VDD L H L Circuit Current at ON IDD1 0 66 1 98 A VDD VS 0 2V VS 5 3 6 0V Circuit Current a...

Page 3: ...V S V BD4842G FVE Low to High VS VS High to Low VS Fig 9 Circuit Current when ON 0 0 0 5 1 0 1 5 40 20 0 20 40 60 80 100 TEMPERATURE Ta CIRCUIT CURRENT WHEN ON I DD1 A BD4842G FVE Fig 10 Circuit Curre...

Page 4: ...ationship between the input voltages VDD and the output voltage VOUT when the input power supply voltage VDD is made to sweep up and sweep down the circuits are those in Fig 12 and 13 When the power s...

Page 5: ...o the VOUT pin the reset signal input terminal of the microcontroller please take into account the waveform of the rise and fall of the output voltage VOUT 2 The following is an example of a circuit a...

Page 6: ...A voltage drop of the through current I1 input resistor R2 is caused by the through current and the input voltage to descends when the output switches from Low to High When the input voltage decrease...

Page 7: ...UT high impedance and it must be VDD in pull up VDD condition 10 This IC has extremely high impedance terminals Small leak current due to the uncleanness of PCB surface might cause unexpected operatio...

Page 8: ...of the same 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 T...

Page 9: ...this document are no antiradiation design Appendix1 Rev2 0 Thank you for your accessing to ROHM product informations More detail product informations and catalogs are available please contact your nea...

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