KB862 KINGBOR | Alldatasheet

Document overview

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Technical content

This system reset IC, developed using the CMOS pr- ocess, has a built-in delay function. Super low consu- mption current of 1.0 A typ. has been achieved throu- gh use of the CMOS process. Also, detection voltage is high precision detection of 2%. µ /KB5/K50 /K2F/K52/K45/K53/K45/K54 Typical Operating Circuit

  • Under-voltage monitor
  • Power-on reset generation (150ms Typ)
  • Choice of threshold voltages (contact Kingbor regarding availability)
  • Active-low reset output
  • Rejects brief input transients
  • Industry standard package and pinout
  • 4-pin SC-82AB package
  • Monitoring processor, ASIC, or FPGA core and I/O voltages
  • PDAs, hand-held PCs
  • Embedded controllers
  • Telecommunications systems
  • Power supplies
  • Wireless / Cellular systems
  • Networking hardware Typical Nominal Junction Part Number Marking Application Threshold T RST (ms) Temperature Package Voltage* Voltage Range KB862-280 6K 3.3V ±5% 2.8V 150 –30 °C to +85°C SC-82AB Microprocessor Reset circuits KB862 Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 KB862 General Description Features

Applications

Ordering Information

Typical Application Block Diagrams

  • Super low consumption current(1.0uA typ)
  • High precision detection voltage(2%)
  • Operating range(0.7 - 10V)
  • Wide operating temperature range(-30 to +85 C) /RESET /MR 0.22uF /MR /RESETVDD VDD VDD VDD GND

2 March 2007

Pin Number Pin Name Pin Function 1 GND Ground return for all IC functions. 4 /RESET Digital Output. Active-low. Asserted whenever V CC falls below the threshold voltage. It will remain asserted for no less than 150ms and be de-asserted after V DD returns above the threshold. 2 V Analog Input. Power supply input to the IC. KB862 Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 Pin Configuration Pin Description SC-82AB (TOP VIEW) GND V DD DD 3 /MR Manual Reset Input. A logic low on /MR asserts reset. /RESET /MR KB862

(Note 1) Terminal Voltage (V CC Storage Temperature (T S Rate of Rise (V CC ESD Rating, Note 3 (Note 2) Ambient Temperature (T A Power Dissipation (T A T A = 25°C; V CC = 3.3V for KB809 unless otherwise noted. Values in bold are for –40°C to +85°C; unless otherwise noted Symbol Parameter Condition Min Typ Max Units V CC Operating Voltage Range T A = 0°C to 70°C 0.65 8 V T A = –30°C to 85°C 0.70 8 V I CC Supply Current V CC = 3.3V 1 4 µA V TH Reset Voltage Threshold S Voltage Options (KB862-280) 2.74 2.80 2.86 V V HYST Typical hysteresis 5m V T RST Reset Timeout Period 150 ms T PROP Propogation delay /RESET < V OL , 100mV Overdrive 9.3 µs V OH /RESET Output Voltage High I SOURCE = 500µA 0.8·V CC V V OL /RESET Output Voltage Low V CC = V TH min., I SINK = 1.2mA 0.3 V V CC > 1.4V, I SINK = 50µA, T A = 0°C to +70°C 0.3 V V CC > 1.6V, I SINK = 50µA, T A Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. VCC V TH RESET T RST T RST V TH Reset Timing Diagram KB862 Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 500 50 Absolute Maximum Ratings Operating Ratings

Electrical Characteristics

R D Delay circuit resistance 0.5 1.0 2.0 MT A = –30 C to 85 C° ° Ω MR=0.22uF

4 March 2007

Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 Supply Voltage Terminal RESET Voltage Detect voltage (+V DET Threshold voltage GND GND Delay time (t D Delay Time (tD) tD .=. 0.69 R D C (F) (s) R D : Pin Resistance C : Pin Capacitor Timing Chart /MR /MR /MR V V tD tD V DD V HYS t DET V DET RESET Voltage t

Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 (For products with detection voltage 2.8V typ. CMOS output) Output voltage 0.5 1.0 1.5 2.0 2.5 1 1.5 2 2.5 3 3.0 Input Voltage (V) Output Voltage (V) Consumption current 0.5 1.5 2.5 02468 1 0 Input Voltage (V) Consumption Current ( µ MR pin output current 0.0 1.0 2.0 3.0 0 0.5 1 1.5 2 2.5 3 4.0 V DS 0.5V Input Voltage (V) MR Pin Output Current (mA) Delay time vs MR 0.1 100 0.0001 0.001 0.01 0.1 1 1000 MR ( µ Delay Time ( ms) Detecting voltage vs temperature 2.60 2.70 2.80 2.90 2 00 2 04 06 08 0 1 0 0 3.00 Temperature ( Detecting Voltage (V) Hysteresis voltage vs temperature 100 120 140 160 180 2 00 2 04 06 08 0 1 0 0 200 Temperature ( Hysteresis Voltage (mV) Note: These are typical characteristics. Characteristics KB862

6 March 2007

Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 PACAGE DESCRIPTION Kingbor Technology TEL:(86) 0755-83095458 FAX: (86) 0755-88364052 www.kingbor.com SC-82AB PACKAGE DIMENSIONS 0.3±0.2 1.3±0.2 0.3±0.1 (0.7) 0.9±0.1 0 to 0.1 0.3±0.1 0.4±0.1 0.05 0.16+0.1 –0.06 2±0.2 2.1±0.3 1.25+0.2 –0.1