A4809C AITSEMI | Alldatasheet
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AiT Semiconductor Inc. www.ait-ic.com A4809C SUPERVISOR (RESET IC) VOL TAGE DETECTORS WITH DELAY CIRCUIT BUIL T-IN REV1.2 - DEC 2015 RELEASED, SEP 2018 UPDATED - - 1 - DESCRIPTION FEATURES The A4809C is a cost -effective system supervisor Integrated Circuit (IC) designed to monitor V CC in digital and mixed signal systems and provide a warning signal when the system power supply is out of working range, and a reset signal to the host processor when necessary. No external components are required. It features low supply current. CMOS output configurations is available. Since the delay circuit is built-in, peripherals are unnecessary and high density mounting is possible. A4809C is available in SOT-23 package. Precision VCC Monitor for 2.63V, 2.93V Highly Accurate: ± 1% Low Power Consumption : lower than 1.5μA Operating Voltage Range: 0.7V ~ 6.0V Detect Voltage Temperature Characteri stics: ±100ppm/℃(TYP.) Built-In Delay Circuit: 50ms ~ 200ms Output Configuration: CMOS Available in SOT-23 package APPLICATION Microprocessor reset circuitry Memory battery back-up circuits Power-on reset circuits Power failure detection System battery life and charge voltage monitors Delay circuitry
ORDERING INFORMATION
SPQ: 3,000pcs/Reel E3 A4809CE3R-XXXDC A4809CE3VR-XXXDC Note XXX: Detector Voltage 263=2.63V 293=2.93V D: Delay Time 50ms~200ms C: Type C=CMOS V: Halogen Free Package R: Tape & Reel AiT provides all RoHS products TYPICAL APPLICATION CMOS output
AiT Semiconductor Inc. www.ait-ic.com A4809C SUPERVISOR (RESET IC) VOL TAGE DETECTORS WITH DELAY CIRCUIT BUIL T-IN REV1.2 - DEC 2015 RELEASED, SEP 2018 UPDATED - - 2 - PIN DESCRIPTION Top View Pin # Symbol Function
1 VSS GND Pin
2 VOUT Output Voltage
3 VDD Input Voltage
VIN, Input Supply Voltage 6V IOUT, Output Current 30mA VOUT, Output Voltage CMOS VSS-0.3V~ VIN +0.3V PD, Power Dissipation SOT-23 150mW TOPR, Operating Temperature Range -30 °C ~+85°C TSTG, Storage Temperature Range -40°C ~+125°C 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 A4809C SUPERVISOR (RESET IC) VOL TAGE DETECTORS WITH DELAY CIRCUIT BUIL T-IN REV1.2 - DEC 2015 RELEASED, SEP 2018 UPDATED - - 3 -
ELECTRICAL CHARACTERISTICS
Parameter Symbol Conditions Min Typ Max Unit Detect Voltage VDF VDF(T) ×0.98 VDF(T) VDF(T) ×1.02 V Hysteresis Range VHYS VDF ×0.002 VDF ×0.005 VDF ×0.008 V Supply Current ISS VIN=1.5V 1.0 1.2 uA VIN=2.0V 1.0 1.3 VIN=3.0V 1.1 1.3 VIN=4.0V 1.1 1.3 VIN=5.0V 1.2 1.5 Operating Voltage VIN VDF= 2.63V or 2.93V 0.7 6 V Output Current IOUT COMS, P-ch VDF=2.63V VIN=6.0V -10 mA Detect Voltage Temperature Characteristics ΔVDF ΔTOPR×VDF ±100 ppm/°C Transient Delay time (VDR → VOUT inversion) TDLY* VIN changes from 0.7V to 6V 50 200 ms NOTE1: VDF(T): Setting detect voltage value NOTE2: Release Voltage: VDR = VDF + VHYS NOTE3: The power consumption during power-start to output being st able (release operation) is 2μA greater than it is after that period (completion of release operation) because of delay circuit through current.
AiT Semiconductor Inc. www.ait-ic.com A4809C SUPERVISOR (RESET IC) VOL TAGE DETECTORS WITH DELAY CIRCUIT BUIL T-IN REV1.2 - DEC 2015 RELEASED, SEP 2018 UPDATED - - 4 - TYPICAL PERFORMANCE CHARACTERISTIC 1. Supply Current vs. Input Voltage 2. Detect Voltage, Release Voltage vs. Ambient Temperature 3. Output Voltage vs. Input Voltage 4. Ambient Temperature vs. Transient Delay Time
AiT Semiconductor Inc. www.ait-ic.com A4809C SUPERVISOR (RESET IC) VOL TAGE DETECTORS WITH DELAY CIRCUIT BUIL T-IN REV1.2 - DEC 2015 RELEASED, SEP 2018 UPDATED - - 5 - BLOCK DIAGRAM CMOS output
AiT Semiconductor Inc. www.ait-ic.com A4809C SUPERVISOR (RESET IC) VOL TAGE DETECTORS WITH DELAY CIRCUIT BUIL T-IN REV1.2 - DEC 2015 RELEASED, SEP 2018 UPDATED - - 6 - DETAILED INFORMATION Operational Explanation CMOS output (the 4th is the most important) 1. When a voltage higher than the release voltage (VDR) is applied to the voltage input pin (V IN), the voltage will gradually fall. When a voltage higher than the detect voltage (V DF) is applied to VIN, output (VOUT) will be equal to the input at VIN. 2. When VIN falls below VDF, VOUT will be equal to the ground voltage (VSS) level (detect state). 3. When VIN falls to a level below that of the minimum operating voltage (VMIN ) output will become unstable. 4. When VIN rises above the VSS level (excepting levels lower than minimum operating voltage), V OUT will be equal to VSS until VIN reaches the VDR level. But if the rising rate is fast enough, VOUT is equal to the pull up voltage. 5. Although VIN will rise to a level higher than VDR, VOUT maintains ground voltage level via the delay circuit. 6. Following transient delay time, VIN will be output at VOUT. Notes: 1. The difference between VDR and VDF represents the hysteresis range. 2. Propagation delay time (t DLY) represents the time it takes for V IN to appear at V OUT once the said voltage has exceeded the VDR level. Timing Chart
AiT Semiconductor Inc. www.ait-ic.com A4809C SUPERVISOR (RESET IC) VOL TAGE DETECTORS WITH DELAY CIRCUIT BUIL T-IN REV1.2 - DEC 2015 RELEASED, SEP 2018 UPDATED - - 7 -
PACKAGE INFORMATION
Dimension in SOT-23 Package (Unit: mm) Symbol Min Max A 1.050 1.250 A1 0.000 0.100 A2 1.050 1.150 b 0.300 0.500 c 0.100 0.200 D 2.820 3.020 E 1.500 1.700 E1 2.650 2.950 e 0.950(BSC) e1 1.800 2.000 L 0.300 0.600 θ 0° 8°
AiT Semiconductor Inc. www.ait-ic.com A4809C SUPERVISOR (RESET IC) VOL TAGE DETECTORS WITH DELAY CIRCUIT BUIL T-IN REV1.2 - DEC 2015 RELEASED, SEP 2018 UPDATED - - 8 - IMPORTANT NOTICE AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its pr oduct, specifications, to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of rele vant information to verify, before placing orders, that the information being relied on is current. AiT Semiconductor Inc. 's integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life support applicati ons, 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 death, personal injury, or server property, or environ mental 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 suppor t. AiT warrants the performance of its products of the specifications applicable at the time of sale.