ADPL62935 AD | Alldatasheet

Document overview

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Technical content

Features

  • 140ms (min) Reset Timeout Delay
  • Manual Reset Input
  • Two Reset Output Options
  • Push-Pull RESET
  • Push-Pull RESET
  • Guaranteed Reset Valid to VCC = +1.0V
  • Immune to Short Negative VCC Transients
  • No External Components
  • Small 5-Pin SOT23 Packages Threshold Suffix Guide SUFFIX RESET THRESHOLD (V) L 4.63 M 4.38 T 3.08 S 2.93 R 2.63 Z 2.32 Y 2.19 W 1.67 V 1.58 Note: Bold indicates standard versions. Samples are typically available for standard versions only. All parts require a 2.5k minimum order increment. Contact factory for availability. Selector Guide appears at end of data sheet. Ordering Information appears at end of data sheet.

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 2 TABLE OF CONTENTS

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 3 Absolute Maximum Ratings Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not impl ied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 4

Package Information

5 SOT23

Land Pattern Number 91-0174 For the latest package outline information and land patterns (footprints), go to http://www.analog.com/packages. Note that a “+”, “#”, or “ -” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. layer board. For detailed information on package thermal considerations, refer to http://www.analog.com/thermal-tutorial.

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 5

Electrical Characteristics

VCC = +1.53V to +2.0V for ADPL62935W/V, T A = -40°C to +125°C, unless otherwise specified. Typical values are at T A = +25°C.) (Note 1)) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Voltage Range VCC Reset output is guaranteed to be in a known state 1.2 5.5 V TA = -40°C to +125°C 1.7 5.5 VCC Supply Current (MR Unconnected) ICC VCC = +5.5V, no load TA = -40°C to +85°C 11 30 µA TA = -40°C to +125°C 30 VCC = +3.6V, no load TA = -40°C to +85°C 7 20 TA = -40°C to +125°C 20 VCC Reset Threshold (VCC Falling) VTH ADPL62935L TA = -40°C to +85°C 4.50 4.63 4.75 V TA = -40°C to +125°C 4.47 4.63 4.78 ADPL62935M TA = -40°C to +85°C 4.25 4.38 4.50 TA = -40°C to +125°C 4.22 4.38 4.53 ADPL62935T TA = -40°C to +85°C 3.00 3.08 3.15 TA = -40°C to +125°C 2.97 3.08 3.17 ADPL62935S TA = -40°C to +85°C 2.85 2.93 3.00 TA = -40°C to +125°C 2.83 2.93 3.02 ADPL62935R TA = -40°C to +85°C 2.55 2.63 2.70 TA = -40°C to +125°C 2.53 2.63 2.72 ADPL62935Z TA = -40°C to +85°C 2.25 2.32 2.38 TA = -40°C to +125°C 2.24 2.32 2.40 ADPL62935Y TA = -40°C to +85°C 2.12 2.19 2.25 TA = -40°C to +125°C 2.11 2.19 2.27 ADPL62935W TA = -40°C to +85°C 1.62 1.67 1.71

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 6 VCC = +1.53V to +2.0V for ADPL62935W/V, T A = -40°C to +125°C, unless otherwise specified. Typical values are at T A = +25°C.) (Note 1)) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS TA = -40°C to +125°C 1.61 1.67 1.72 ADPL62935V TA = -40°C to +125°C 1.52 1.58 1.62 Reset Threshold Temperature Coefficient 60 ppm/°C Reset Threshold Hysteresis 2 × VTH mV VCC to Reset Output Delay tRD VCC = VTH to (VTH - 100mV) 20 µs Reset Timeout Period tRP TA = -40°C to +85°C 140 200 280 ms TA = -40°C to +125°C 100 320 RESET Output LOW VOL VCC ≥ 1.0V, ISINK = 50µA, reset asserted, TA = 0°C to +85°C 0.3 V VCC ≥ 1.2V, ISINK = 100µA, reset asserted 0.3 VCC ≥ 2.55V, ISINK = 1.2mA, reset asserted 0.3 VCC ≥ 4.25V, ISINK = 3.2mA, reset asserted 0.4 RESET Output HIGH VOH VCC ≥ 1.8V, ISOURCE = 200µA, reset not asserted 0.8 × VCC V VCC ≥ 3.15V, ISOURCE = 500µA, reset not asserted 0.8 × VCC VCC ≥ 4.75V, ISOURCE = 800µA, reset not asserted 0.8 × VCC RESET Output LOW VOL VCC ≥ 1.8V, ISINK = 500µA, reset not asserted 0.3 V VCC ≥ 3.15V, ISINK = 1.2mA, reset not asserted 0.3 VCC ≥ 4.75V, ISINK = 3.2mA, reset not asserted 0.4 RESET Output HIGH VOH VCC ≥ 1.0V, ISOURCE = 1µA, reset asserted, TA = 0°C to +85°C 0.8 × VCC V VCC ≥ 1.50V, ISOURCE = 100µA, reset asserted 0.8 × VCC VCC ≥ 2.55V, ISOURCE = 500µA, reset asserted 0.8 × VCC VCC ≥ 4.25V, ISOURCE = 800µA, reset asserted 0.8 × VCC MANUAL RESET INPUT

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 7 VCC = +1.53V to +2.0V for ADPL62935W/V, T A = -40°C to +125°C, unless otherwise specified. Typical values are at T A = +25°C.) (Note 1)) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MR Input Voltage VIL 0.2 × VCC V VIH 0.8 × VCC MR Minimum Input Pulse 1 µs MR Glitch Rejection 100 ns MR to Reset Delay 200 ns MR Pullup Resistance 25 50 75 kΩ Note 1: Overtemperature limits are guaranteed by design and not production tested. Devices tested at TA = +25°C.

Figure 7. Voltage Output High vs. Source Current

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 10 Pin Configurations Pin Descriptions PIN NAME FUNCTION

1 RESET

Active-Low Push-Pull Reset Output. RESET changes from high to low when the VCC input drops below the selected reset threshold or MR is pulled low. RESET remains low for the reset timeout period after VCC exceeds the device reset threshold or MR goes low to high.

2 GND Ground

3 RESET

Active-High Push-Pull Reset Output. RESET changes from low to high when the VCC input drops below the selected reset threshold or MR is pulled low. RESET remains high for the reset timeout period after VCC exceeds the device reset threshold or MR goes low to high. 4 MR Active-Low Manual Reset Input. Internal 50kW pullup to VCC. Pull low to force a reset. Reset remains active as long as MR is low and for the reset timeout period after MR goes high. Leave unconnected or connect to VCC if unused.

5 VCC Supply Voltage and Input for Reset Threshold Monitor

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 11 Functional Diagrams 1.26V VCC VCC MR RESET ADPL62935 RESET RESET GENERATOR 001

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 12 Detailed Description RESET/RESET Output A µP’s reset input starts the µP in a known state. The ADPL62935 µP supervisory circuits assert a reset to prevent code- execution errors during power-up, power-down, and brownout conditions. Whenever VCC falls below the reset threshold, the reset output asse rts low for RESET and high for RESET. Once V CC exceeds the reset threshold, an internal timer keeps the reset output asserted for the specified reset timeout period (t RP); after this interval, reset output returns to its original state (see Figure 8). Manual Reset Input Many μP-based products require manual reset capability, allowing the operator, a test technician, or external logic circuitry to initiate a reset. On the ADPL62935, a logic low on MR asserts a reset. Reset remains asserted while MR is low, and for the timeout period (140ms min) after it returns high. MR has an internal 50kΩ pull-up resistor, so it can be left open if not used. This input can be driven with CMOS logic levels or with open-drain/collector outputs. Connect a normally open momentary switch from MR to GND to create a manual reset function; external debounce circuitry is not required. If MR is driven from long cables or th e device is used in a noisy environment, connect a 0.1μF capacitor from MR to GND to provide additional noise immunity.

conditions. The Typical Operating Characteristics show a graph of the ADPL62935 Maximum VCC Transient Duration vs. lasts for 20μs or less will not trigger a reset pulse. Figure 8. Reset Timing Diagram

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 14 Typical Operating Circuit RESET RESET MR VCC GND VCC 0.1μF MICROPROCESSOR RESET RESET GND ADPL62935 VCC 011

Low-Voltage µP Supervisor with Manual Reset ADPL62935 www.analog.com Analog Devices | 15

Ordering Information

PART* TEMP RANGE PIN-PACKAGE ADPL62935SUK+ -40°C to +125°C 5 SOT23-5 ADPL62935SUK+T -40°C to +125°C 5 SOT23-5 ADPL62935_UK+ -40°C to +125°C 5 SOT23-5 ADPL62935_UK+T -40°C to +125°C 5 SOT23-5 *Insert the desired suffix letter (from the Threshold Suffix Guide) into the blank to complete the part number +T Tape and Reel

Low-Voltage µP Supervisor with Manual Reset ADPL62935

Revision History

0 01/24 Release to market intro — Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. w w w . a n a l o g . c o m Analog Devices | 16