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AP1701 Dataheets PDF



Part Number AP1701
Manufacturers Diodes Incorporated
Logo Diodes Incorporated
Description (AP1701 - AP1704) 3-PIN MICROPROCESSOR RESET CIRCUITS
Datasheet AP1701 DatasheetAP1701 Datasheet (PDF)

AP1701/2/3/4 3-PIN MICROPROCESSOR RESET CIRCUITS Features • • • • • • • • • • • • Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power-Supply Voltages Fully Specified Over Temperature Available in three Output Configurations Push-Pull RESET Low Output (AP1701/3) Push-Pull RESET High Output (AP1702/4) 200ms Min. Power-On Reset Pulse Width 20µA Supply Current (Typ.) Guaranteed Reset Valid to VCC = +1V Power Supply Transient Immunity No External Components Green Package: SC59-3L Lead Free Fini.

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AP1701/2/3/4 3-PIN MICROPROCESSOR RESET CIRCUITS Features • • • • • • • • • • • • Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power-Supply Voltages Fully Specified Over Temperature Available in three Output Configurations Push-Pull RESET Low Output (AP1701/3) Push-Pull RESET High Output (AP1702/4) 200ms Min. Power-On Reset Pulse Width 20µA Supply Current (Typ.) Guaranteed Reset Valid to VCC = +1V Power Supply Transient Immunity No External Components Green Package: SC59-3L Lead Free Finish / RoHS Compliant (Note1) General Description The AP1701/2/3/4 are used for microprocessor (µP) supervisory circuits to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V powered circuits. These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 240ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. The AP1701/2/3/4 have push pull outputs. The AP1701/3 have an active low RESET output, while the AP1702/4 has an active high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. Low supply current makes the AP1701/2/3/4 ideal for use in portable equipment. The AP1701/2/3/4 is available in a 3-pin SC59 package. Applications • • • • • • Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable/Battery Powered Equipment Automotive Ordering Information AP170X X X X X Enable 1 2 3 4 : Active-Low : Active-High : Active-Low : Active-High Voltage A B C D E F G : 4.63 : 4.38 : 4.00 : 3.08 : 2.93 : 2.63 : 2.25 Package W : SC59 Lead Free L : Lead Free G : Green Packing -7 : Taping Notes: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device AP170XXW Package Packaging Code (Note 2) W SC59 Quantity 7” Tape and Reel Part Number Suffix -7 3000/Tape & Reel Notes: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AP1701/2/3/4 Rev. 2 1 of 9 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1701/2/3/4 3-PIN MICROPROCESSOR RESET CIRCUITS Pin Assignments (Top View) (Top View) GND 1 AP1701 AP1702 3 VCC RESET (RESET) 1 AP1703 AP1704 3 VCC RESET (RESET) 2 GND 2 SC59-3L Pin Descriptions SC59-3L Name GND RESET (RESET) VCC Description Ground Reset Output Pin L: for AP1701/3 H: for AP1702/4 Operating Voltage Input Absolute Maximum Ratings Symbol VCC VRESET ICC IO PD TOP TST Parameter Terminal Voltage (with respect to GND) RESET, RESET (push-pull) Input Current, VCC Output Current, RESET, RESET Continuous Power Dissipation (TA = +70°C), de-rate 4mW/°C above +70°C Operating Junction Temperature Range Storage Temperature Range Rating -0.3 to +6.0 -0.3 to (VCC + 0.3) 20 20 320 -40 to +105 -65 to +150 Unit V V mA mA mW °C °C AP1701/2/3/4 Rev. 2 2 of 9 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1701/2/3/4 3-PIN MICROPROCESSOR RESET CIRCUITS Electrical Characteristics Symbol Parameter VCC VCC Range ICC Supply Current (TA = 25ºC) VTH TS TDELAY VOL VOH VOL VOH Conditions TA = 0oC to +70oC VTH + 1.0V AP1701/2/3/4A AP1701/2/3/4B AP1701/2/3/4C Reset Threshold AP1701/2/3/4D TA = 25ºC AP1701/2/3/4E AP1701/2/3/4F AP1701/2/3/4G Reset Threshold Tempco Set-up Time VCC = 0 to (VTH – 100mV) Reset Active TA = 0oC to +70oC Timeout Period VCC = VTH min, ISINK = 1.2mA, AP1701/3 RESET Output V = V min, I CC TH SINK = 3.2mA Voltage Low VCC > 1.0V, ISINK = 50uA RESET Output VCC > VTH max, ISOURCE = 500uA, AP1701/3 VCC > VTH max, ISOURCE = 800uA Voltage-High RESET Output VCC = VTH max, ISINK = 1.2mA, AP1702/4 Voltage-Low VCC = VTH max, ISINK = 3.2mA RESET Output 1.8V < VCC < VTH min, ISOURCE = 150uA, Voltage-High AP1702/4 Min. 1.0 4.54 4.29 3.92 3.02 2.87 2.57 2.20 Typ. 20 4.63 4.38 4.00 3.08 2.93 2.63 2.25 30 Max. 5.5 30 4.72 4.47 4.08 3.14 2.99 2.68 2.30 Unit V µA V 100 100 240 600 0.3 0.4 0.3 0.8VCC VCC –1.5 0.3 0.4 0.8 VCC ppm/ o C µs ms V V V V Typical Application Circuit V CC Cin 0.1uF V CC V CC AP170X RESET (RESET) Microprocessor RESET INPUT GND GND AP1701/2/3/4 Rev. 2 3 of 9 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1701/2/3/4 3-PIN MICROPROCESSOR RESET CIRCUITS Function Description A microprocessor’s (µP’s) reset input starts the µP in a known state. The AP1701/2/3/4 assert reset to prevent code-execution errors during power-up, power-down, or brownout conditions. They assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 240ms after VCC has risen above th.


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