A4810 AITSEMI | Alldatasheet
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AiT Semiconductor Inc. www.ait-ic.com A4810A/B SUPERVISOR (RESET IC) HIGH PRECISION BUIL T-IN DELAY CIRCUIT REV1.2 - APR 2011 RELEASED, APR 2016 UPDATED - - 1 - DESCRIPTION FEATURES The A4810A/B microprocessor supervisory circuit can be used to monitor the power supplies in microprocessor and digital systems. It provides a reset to the microprocessor during power -up, power-down, and brown-out conditions. The function of the A4810A/B is to monitor the VDD supply voltage, and assert a reset signal whenever this voltage declines below the factory -programmed reset threshold. The reset signal remains asserted for 250ms after VDD rises above the threshold. The A4810A/B has an active-low /RESET output. With a low supply current of only 2 μA (Typ.), the A4810A/B are ideal for use in portable equipment. A4810A/B is available in SOT-23 package. Precise monitoring of 2.7V, 3.0V, 3.3V and 5.0V supplies 140 ms min. Power-On R eset pulse width, 250ms typical, has an active -low /RESET Output Guaranteed /RESET Output valid for VDD≥1.1V Low Supply Current, 2μA Typ. No external components needed Specified over full temperature range A4810A: 0°C to +70°C, A4810B: -40°C to +105°C Available in SOT-23 package APPLICATION Microprocessor Systems Computers Controllers Intelligent Instruments Portable/Battery-Powered Equipment Automotive
ORDERING INFORMATION
SPQ: 3,000pcs/Reel A4810AE3R-XXXDZ A4810AE3VR-XXXDZ A4810BE3R-XXXDZ A4810BE3VR-XXXDZ SOT-23S SPQ: 3,000pcs/Reel E3S A4810AE3SR-XXXDZ A4810AE3SVR-XXXDZ A4810BE3SR-XXXDZ A4810BE3SVR-XXXDZ Note XXX: Detector Voltage 263 = 2.63V ; 293 =2.93V D: Delay Time 250ms Z: C=CMOS, N=Nch V: Halogen free Package R: Tape & Reel AiT provides all RoHS products TYPICAL APPLICATION
AiT Semiconductor Inc. www.ait-ic.com A4810A/B SUPERVISOR (RESET IC) HIGH PRECISION BUIL T-IN DELAY CIRCUIT REV1.2 - APR 2011 RELEASED, APR 2016 UPDATED - - 2 - PIN DESCRIPTION Top View Top View Top View Top View Pin # Symbol Function
1 GND GND Pin
Action-low output. /RESET remains low while VDD is below the reset threshold, and for 250ms after VDD rises above the reset threshold.
3 VDD Voltage input pin
AiT Semiconductor Inc. www.ait-ic.com A4810A/B SUPERVISOR (RESET IC) HIGH PRECISION BUIL T-IN DELAY CIRCUIT REV1.2 - APR 2011 RELEASED, APR 2016 UPDATED - - 3 - ABSOLUTE MAXIMUM RATINGS VDD, Input Voltage Range -0.3V ~ 6.0V /RESET, Output Voltage Range -0.3V ~ (VDD + 0.3V) Input Current at VDD 20mA Output Current: /RESET 20mA Rate of Rise at VDD 100V/μs Power Dissipation (TA= 70°C) (Derate 4mW/°C above 70°C) 320mW Operating Temperature Range A4810A 0°C ~ 70°C A4810B -40°C ~ 105°C Storage Temperature Range -65°C ~ 160°C Lead Temperature & Time 260°C,10s Stresses beyond 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 Electrical Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
AiT Semiconductor Inc. www.ait-ic.com A4810A/B SUPERVISOR (RESET IC) HIGH PRECISION BUIL T-IN DELAY CIRCUIT REV1.2 - APR 2011 RELEASED, APR 2016 UPDATED - - 4 -
ELECTRICAL CHARACTERISTICS
Unless otherwise noted VDD is over the full voltage range, TA = -40°C to 105°C. Typical values at TA = 25°C VDD=3.3V for 2.93V and VDD=3V for 2.63V Parameter Symbol Conditions Min Typ Max Unit Input Voltage(VDD) Range VDD TA= 0°C to 70°C A4810A 1.1 - 5.5 V TA = -40°C to 105°C A4810B 1.2 - 5.5 Supply Current ICC TA = -40°C to 85°C VDD < 5.5V - 2.5 5 uA TA = -40°C to 85°C VDD < 3.6V, 2.63/2.93 - 1.5 4 TA = 85°C to 105°C VDD < 5.5V - - 10 TA= 85°C to 105°C VDD < 3.6V, 2.63/2.93 - - 8 Reset Threshold VTH VDD=3.3V, VDET=2.93V V TA = 25°C 2.89 2.93 2.96 TA = -40°C to 85°C 2.85 - 3.00 TA = 85°C to 105°C 2.78 - 3.08 VDD=3.0V, VDET=2.63V TA = 25°C 2.59 2.63 2.66 TA = -40°C to 85°C 2.55 - 2.70 TA = 85°C to 105°C 2.50 - 2.76 Reset Threshold Stability - 30 - ppm /°C VDD to Reset Delay VDD= VTH to (VTH - 100mV) - 20 - us Reset Active Timeout Period tOL TA = -40°C to 85°C 140 250 560 ms TA = 85°C to 105°C 100 - 840 RESET Output Voltage Low VOL V VDD=VTH min., ISINK = 3.2mA, 4.38V - - 0.2 VDD> 1.1V, ISINK = 50μA - - 0.1 RESET Output
AiT Semiconductor Inc. www.ait-ic.com A4810A/B SUPERVISOR (RESET IC) HIGH PRECISION BUIL T-IN DELAY CIRCUIT REV1.2 - APR 2011 RELEASED, APR 2016 UPDATED - - 7 -
PACKAGE INFORMATION
Dimension in SOT-23 Package (Unit: mm) Dimension in SOT-23S Package (Unit: mm) A B C D E F G H K
AiT Semiconductor Inc. www.ait-ic.com A4810A/B SUPERVISOR (RESET IC) HIGH PRECISION BUIL T-IN DELAY CIRCUIT REV1.2 - APR 2011 RELEASED, APR 2016 UPDATED - - 8 - IMPORTANT NOTICE AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its pr oduct, specifications, to discontinue any integrated c ircuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. AiT Semiconductor Inc. 's integrated circuit produc ts are not designed, intended, authorized, or warranted to be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT products in such applications is understood to be fully at the risk of the customer. As used herein may involve potential risks of de ath, personal injury, or server property, or environmental damage. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. AiT Semiconductor Inc . assumes to no liability to customer product design or application support. AiT warrants the performance of its products of the specifications applicable at the time of sale.