NJU7706 New Japan Radio Co.,Ltd, NJU7706 Datasheet

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NJU7706

Manufacturer Part Number
NJU7706
Description
Voltage Detector
Manufacturer
New Japan Radio Co.,Ltd
Datasheet

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Ver.2007-08-03
built-in delay time generator of fixed time.
microprocessor or DSP through monitoring power supply voltage.
is unstable. Moreover, the delay function can make a sequence
that other devices in application work and stabilize before
microcomputer or DSP works.
and three fixed delay times 50ms, 100ms and 200ms are
available. Manual reset function can output reset signal
irrespective of detection voltage.
type.
space conscious applications.
GENERAL DESCRIPTION
FEATURES
PIN CONFIGURATION
The NJU7706/07 is a high precision voltage detector with a
The detection voltage is internally fixed with an accuracy of 1.0%,
The NJU7706/07 is useful for preventing malfunction of
The delay function achieves set wait time when supply voltage
NJU7706 is Nch. Open Drain and NJU7707 is a C-MOS output
Small packaging makes NJU7706 and NJU7707 suitable for
High Precision Detection Voltage
Low Quiescent Current
Detection Voltage Range
Delay Time(Built-in Fixed Type)
ON/OFF switch of delay time(DSW pin)
Manual Reset
Output Configuration
Package Outline
NJU7706/07F
5
1 2 3
4
PIN FUNCTION
1.DSW
2.V
3.MR
4.V
5.V
SS
OUT
DD
1.3 A typ.
1.5 6.0V(0.1V step)
50ms /100ms /200ms(Built-in Fixed Type)
Active “L” : NJU770*F**A
Active "H" : NJU770*F**B
NJU7706: Nch. Open Drain type
NJU7707: C-MOS Output type
SOT-23-5
1.0%
VOLTAGE DETECTOR
PACKAGE OUTLINE
NJU7706/07F
NJU7706/07
- 1 -

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NJU7706 Summary of contents

Page 1

... Manual reset function can output reset signal irrespective of detection voltage. NJU7706 is Nch. Open Drain and NJU7707 is a C-MOS output type. Small packaging makes NJU7706 and NJU7707 suitable for space conscious applications. ...

Page 2

... NJU7706/07 EQUIVALENT CIRCUIT V DD Delay Circuit Vref V SS DSW NJU7706** Delay Circuit Vref V SS DSW NJU7707** OUT Vref OUT Vref Delay Circuit OUT DSW MR NJU7706**B* V Delay Circuit OUT DSW MR NJU7707**B* Ver.2007-08-03 ...

Page 3

... NJU770*F31A2 3.1V NJU770*F39A2 3.9V NJU770*F04A2 4.0V NJU770*F42A2 4.2V NJU770*F43A2 4.3V NJU770*F45A2 4.5V NJU770*F46A2 4.6V NJU770*F06A2 6.0V NJU770*F25B2 2.5V NJU770*F27B2 2.7V NJU770*F42B2 4.2V NJU770*F27A3 2.7V NJU770*F39A3 3.9V NJU770*F42A3 4.2V NJU770*F27B3 2.7V Ver.2007-08-03 MR Logic Delay Time Active “L” 50ms Active “H” Active “L” 100ms Active “H” Active “L” 200ms Active “H” NJU7706/ ...

Page 4

... DET V =1.2V DD Nch,V =0. =2.4V ( 2.7V Version =9V DD OUT NJU7706F*** +1V, DD DET NJU7706F***2 DSW=”L Level” NJU7706F*** +1V, DSW=”H Level” DD DET R =100k L ) indicates the same value of the input voltage(V OPL ). DD UNIT MIN. TYP. ...

Page 5

... V MR Delay time2 TEST CIRCUIT Oscilloscope R ch1 ch2 L V OUT NJU7706/ OUT NJU7706 DET V OPL MR DSW OUT NJU7706 MR DSW OUT NJU7706 MR DSW OUT LEAK OUT OUT DS Oscilloscope ch1 ch2 ...

Page 6

... TYPICAL APPLICATION 1 Power Supply Monitor Circuit ( OUT NJU7706 MR DSW Power Supply Monitor Circuit ( DD1 DD2 OUT NJU7706 MR DSW line COMMON Reset Signal INPUT Micro-Processor etc. line SEPARATE Reset Signal INPUT Micro-Processor etc. ...

Page 7

... V =6.0V DD Pch, V =0.5V DS (4.0V 5.6V Version) V =8.4V ( 5.7V Version) DD NJU7707F*** +1V, DD DET NJU7707F***2 DSW=”L Level” NJU7707F*** +1V, DSW=”H Level” DD DET R =100k L ) indicates the same value of the input voltage(V OPL ). DD NJU7706/07 (Ta=25 C) UNIT MIN. TYP. -1. 1.0 1.3 0.75 2.0 4.5 7.0 2.0 3.5 2.5 4.0 3.0 5.0 100 42.5 50 ...

Page 8

... NJU7706/07 TEST CIRCUIT Circuit Operating Current TEST CIRCUIT A Iss V DD NJU7707 V DD DSW V SS Nch Output current TEST CIRCUIT V DD NJU7707 V DD DSW pin Input voltage TEST CIRCUIT V DD NJU7707 V DD DSW Detection voltage TEST CIRCUIT V OUT OUT ...

Page 9

... DSW V SS TYPICAL APPLICATION 1 Power Supply Monitor Circuit (VDD line COMMON OUT NJU7707 MR DSW V SS Ver.2007-08-03 Oscilloscope ch1 ch2 V OUT Reset Signal INPUT Micro-Processor etc. NJU7706/07 Delay time2 TEST CIRCUIT OUT NJU7707 MR DSW V SS Oscilloscope ch1 ch2 - 9 - ...

Page 10

... NJU7706/07 Functional Description (1) Basic operation Supply voltage (V ) Hysteresis voltage DD Detection voltage (V ) DET Minimum operation voltage (V ) OPL V SS Output voltage (V ) OUT V SS (*8): C-MOS output product (NJU7707) : When V (2) Description of Manual Reset Reset signal can output independently with MR. Logic of MR Active "L" ...

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