NJM2103L

Designated client product This product will be discontinued its production in the near term. And it is provided for customers currently in use only, with a time limit. It can not be available for your new project. Please select other new or existing products. For more information, please contact our sales office in your region. New Japan Radio Co.,Ltd. www.njr.com NJM2103 SYSTEM RESET IC ■ GENERAL DESCRIPTION NJM2103 is supply voltage supervisory IC to detect the abnormal conditions, such as shut down of all supply voltages at once, or sudden voltage down and then generate the reset signal. It supervises both 5V supply voltage and the voltage optionally set up. ■ PACKAGE OUTLINE NJM2103D ■ FEATURES ● Precise Detection of Supply Voltage Down ● Possible Detection of Optional Voltage Down ● Possible Detection of Optional Over-loading ● Low Operating Current ● Reference Voltage can be taken out. ● Low Reset Validated Voltage ● Voltage Detection with Hystersis Feature ● Package Outline ● Bipolar Technology NJM2103M (VSA=4.2V±2.5%) (VSB=1.22V±1.5%) (ICC≦560µA@VSB=5V) (V+=0.8V Typ.) NJM2103L DIP8, DMP8, SIP8 ■ PIN CONFIGURATION PIN FUNCTION 1. CT 2. VSC 3. OUTC 4. GND 5. V+ 6. VSB/ RESIN 7. VSA 8. RESET NJM2103L NJM2103D NJM2103M ■ BLOCK DIAGRAM V + 5 100kΩ 1.235V - 7 40kΩ VSA VSB / RESIN 6 + 10µA + Comp.A 1.235V Reference Voltage 6µA - + - + - 2 VSC 4 GND + Comp.C Comp.B R Q S 1 CT Ver.2012-07-09 8 3 RESET OUTC -1- NJM2103 (Ta=25°C) ■ ABSOLUTE MAXIMUM RATINGS SYMBOL RATINGS UNIT Supply Voltage PARAMETER V+ 20 V Power Dissipation PD Input Voltage A VSA V++0.3 (13.5V) ⎛ R ⎞ Detecting Voltage ≒ ⎜⎜1 + 4 ⎟⎟ ×VSB ⎝ R5 ⎠ ⎛ R ⎞ Constant Voltage Output VS ≒ ⎜⎜1 + 1 ⎟⎟ ×VSC ⎝ R2 ⎠ 4) Compulsry Reset Input Reset signal TTL level to VSB - terminal ⎧V (High Level ) RESET Output ≒ ⎨ S ⎩OV (Low Level) Ver.2012-07-09 -5- NJM2103 5) 5V, VCC