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MAX803 Dataheets PDF



Part Number MAX803
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description Very Low Supply Current 3-Pin Microprocessor Reset Monitor
Datasheet MAX803 DatasheetMAX803 Datasheet (PDF)

MAX803 Series, NCP803 Series Very Low Supply Current 3-Pin Microprocessor Reset Monitor The MAX803/NCP803 is a cost−effective system supervisor circuit designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required. The reset output is driven active within 10 msec of VCC falling through the reset voltage threshold. Reset is maintained active for a timeout period which is trimmed by the factory after VCC rises above.

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MAX803 Series, NCP803 Series Very Low Supply Current 3-Pin Microprocessor Reset Monitor The MAX803/NCP803 is a cost−effective system supervisor circuit designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required. The reset output is driven active within 10 msec of VCC falling through the reset voltage threshold. Reset is maintained active for a timeout period which is trimmed by the factory after VCC rises above the reset threshold. The MAX803/NCP803 has an open drain active−low RESET output. Both devices are available in SOT−23 and SC−70 packages. The MAX803/NCP803 is optimized to reject fast transient glitches on the VCC line. Low supply current of 0.5 mA (VCC = 3.2 V) make these devices suitable for battery powered applications. Features • Precision VCC Monitor for 1.5 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V Supplies • Precision Monitoring Voltages from 1.2 V to 4.9 V Available in 100 mV Steps • Four Guaranteed Minimum Power−On Reset Pulse Width Available (1 ms, 20 ms, 100 ms, and 140 ms) • RESET Output Guaranteed to VCC = 1.0 V • Low Supply Current • VCC Transient Immunity • No External Components • Wide Operating Temperature: −40°C to 105°C • These Devices are Pb−Free and are RoHS Compliant Typical Applications • Computers • Embedded Systems • Battery Powered Equipment • Critical Microprocessor Power Supply Monitoring VCC C = 100 nF VCC MAX803 NCP803 RESET Rpull−up VCC mP RESET GND GND www.onsemi.com MARKING DIAGRAM 1 3 SOT−23 (TO−236) CASE 318 3 xxx MG G 2 12 SC−70 (SOT−323) CASE 419 xx MG G 1 xxx = Specific Device Code M = Date Code G = Pb−Free Package (Note: Microdot may be in either location) PIN CONFIGURATION GND 1 3 VCC RESET 2 SOT−23/SC−70 (Top View) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 8 of this data sheet. DEVICE MARKING INFORMATION See general marking information in the device marking section on page 8 of this data sheet. 0 Figure 1. Typical Application Diagram 0 © Semiconductor Components Industries, LLC, 2006 October, 2015 − Rev. 10 1 Publication Order Number: MAX803/D MAX803 Series, NCP803 Series 3 VCC Timeout Counter Oscillator 2 RESET Vref 1 GND Figure 2. NCP803, MAX803 Series Open−Drain Active−Low Output PIN DESCRIPTION Pin No. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ1 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ2 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ3 Symbol GND RESET VCC Description Ground RESET output remains low while VCC is below the reset voltage threshold, and for a reset timeout period after VCC rises above reset threshold. Supply Voltage: C = 100 nF is recommended as a bypass capacitor between VCC and GND. ABSOLUTE MAXIMUM RATINGS Rating Symbol Value Unit Power Supply Voltage (VCC to GND) RESET Output Voltage (CMOS) Input Current, VCC Output Current, RESET VCC −0.3 to 6.0 V −0.3 to (VCC + 0.3) V 20 mA 20 mA dV/dt (VCC) Thermal Resistance, Junction−to−Air (Note 1) SOT−23 SC−70 RqJA 100 V/msec 301 °C/W 314 Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 Seconds) ESD Protection Human Body Model (HBM): Following Specification JESD22−A114 Machine Model (MM): Following Specification JESD22−A115 TJ Tstg Tsol −40 to +125 −65 to +150 +260 2000 200 °C °C °C V Latchup Current Maximum Rating: Following Specification JESD78 Class II Positive Negative ILatchup 200 200 mA Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. This based on a 35x35x1.6mm FR4 PCB with 10mm2 of 1 oz copper traces under natural convention conditions and a single component characterization. 2. The maximum package power dissipation limit must not be exceeded. PD + TJ(max) * RqJA TA with TJ(max) = 150°C www.onsemi.com 2 MAX803 Series, NCP803 Series ELECTRICAL CHARACTERISTICS TA = −40°C to +105°C unless otherwise noted. Typical values are at TA = +25°C. (Note 3) Characteristic Symbol Min Typ Max Unit VCC Range TA = 0°C to +70°C TA = −40°C to +105°C (Note 4) V 1.0 − 5.5 1.2 − 5.5 Supply Current VCC = 3.3 V TA = −40°C to +85°C TA = 85°C to +105°C (Note 5) VCC = 5.5 V TA = −40°C to +85°C TA = 85°C to +105°C (Note 5) Reset Threshold (Vin Decreasing) (Note 6) MAX803SQ463/NCP803SN463 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C (Note 5) ICC − − − − VTH 4.56 4.51 4.40 0.5 − 0.8 − 4.63 − − mA 1.2 2.0 1.8 2.5 V 4.70 4.75 4.88 MAX803SQ438/N.


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