AAT3560/2/4 NanoPower™ Voltage Detector General Description Features The AAT3560/2/4 series of PowerManager products are part of AnalogicTech's Total Power Management IC™ (TPMIC™) product family. These voltage detectors are ideal for monitoring voltage supplies in portable systems, where extended battery life is critical. They provide a lowcost, reliable solution by eliminating several external components. The AAT3560 series operates by monitoring the system power supply voltage. When the input voltage drops below a fixed threshold, the device output changes state depending upon configuration. When the input voltage rises above the threshold, the device output reverts back to the previous state. The AAT3560 series is available with three different output stages: AAT3560 push-pull active high output; AAT3562 push-pull active low output; and AAT3564 open drain active low output. • • • The quiescent supply current is extremely low, typically 1µA , making it ideal for portable batteryoperated equipment. Applications • • • • • • • • • • • • • AAT3560/2/4 devices are available in a Pb-free, 3-pin SOT23 package and are specified over the -40°C to +85°C operating temperature range. PowerManager™ Input Voltage Range: 1.2V to 5.5V Operates Down to 1.2V Extremely Low Quiescent Current: Less Than 2µA High Accuracy Detection Threshold: ±1.5% Monitor Power Supply Voltages — Fixed Thresholds from 2.2V to 4.6V Active Noise Suppression Available Output Configurations: — Open-Drain Output — CMOS Active High Output — CMOS Active Low Output Temperature Range: -40°C to +85°C 3-Pin SOT23 Package Battery Charger Circuits Battery Packs Data Acquisition Systems Intelligent Instruments Notebook Computers Portable Electronics Power Supplies Typical Application DC/DC Converter VCC µP Li-Ion + VCC AAT3560 AAT3562 RESET (RESET) AAT3564 SUSPEND GND 3560.2006.03.1.2 1 AAT3560/2/4 NanoPower™ Voltage Detector Pin Descriptions Pin # Symbol Function 1 GND 2 RESET (RESET) 3 VCC Ground Reset output. See table below for output configurations. Supply voltage (+1.2V to +5.5V). Part Number Descriptions SOT23-3 Part Number Part Description AAT3560 RESET Push Pull Active High AAT3562 RESET Push Pull Active Low AAT3564 RESET Open Drain, Active Low Pin Configuration SOT23-3 (Top View) GND 1 3 (RESET) RESET 2 VCC 2 3560.2006.03.1.2 AAT3560/2/4 NanoPower™ Voltage Detector Absolute Maximum Ratings1 TA = 25°C, unless otherwise noted. Symbol VCC VRESET IMAX IRESET TJ TLEAD Description VCC to GND RESET to GND (Push-Pull Output) RESET to GND (Open-Drain Output) Maximum Continuous Input Current RESET/RESET Current Operating Junction Temperature Range Maximum Soldering Temperature (at Leads) for 10s Value Units -0.3 to 5.5 -0.3 to VCC+0.3 -0.3 to 5.5 20 20 -40 to 150 300 V mA mA °C °C Value Units 200 320 °C/W mW V Thermal Information2 Symbol ΘJA PD Description Maximum Thermal Resistance Maximum Power Dissipation 1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time. 2. Mounted on an FR4 board. 3560.2006.03.1.2 3 AAT3560/2/4 NanoPower™ Voltage Detector Electrical Characteristics VIN = 5V; TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C; VCC = 5V for 4.63/4.38V versions; VCC = 3.3V for 3.08/2.93V versions; VCC = 3.0V for 2.63V version; VCC = 2.5V for 2.32/2.2V versions. Symbol Description VCC Operation Voltage IQ Quiescent Current VTH RESET Threshold (Table 1) dVTH/°C RESET Threshold Tempco VOL RESET Low Output Voltage AAT3562, AAT3564 VOH VOL VOH IDOFF 4 RESET High Output Voltage, AAT3562 RESET Low Output Voltage AAT3560 RESET High Output Voltage AAT3560 RESET Leakage Current, AAT3564 Conditions Min TA = 0°C to +70°C TA = -40°C to +85°C VCC = 3V VCC = 5.5V TA = 25°C TA = -40°C to +85°C 1.0 1.2 ISINK = 1.2mA, VCC = VTH(min), VTH ≤ 3.08V, RESET Asserted ISINK = 3.2mA, VCC = VTH(min), VTH > 3.08V, RESET Asserted ISOURCE = 800µA, VTH > 3.08V, VCC > VTH (max) ISOURCE = 500µA, VTH ≤ 3.08V, VCC > VTH (max) ISINK = 1.2mA, VCC > VTH (max), VTH ≤ 3.08V, RESET Not Asserted ISINK = 3.2mA, VCC > VTH (max), VTH > 3.08V, RESET Not Asserted ISOURCE = 500µA, VCC > 2.1V, RESET Asserted ISOURCE = 50µA, VCC > 1.2V, RESET Asserted VCC > VTH Typ Max Units 5.5 V 5.5 0.85 2 µA 1.05 3 VTH - 1.5% VTH VTH+1.5% V VTH - 2.5% VTH VTH+2.5% 40 ppm/°C 0.3 V 0.4 VCC -1.5 V 0.8 VCC 0.3 V 0.4 0.8VCC V 0.8VCC 1 µA 3560.2006.03.1.2 AAT3560/2/4 NanoPower™ Voltage Detector Typical Characteristics VIN = 5V; TA = 25°C, unless otherwise noted. Normalized Reset Threshold vs. Temperature Supply Current vs. Temperature VCC = 5V 1.20 Normalized Threshold Supply Current (µA) 1.40 1.00 0.80 VCC = 3V 0.60 0.40 0.20 0.00 -40 -20 0 20 40 60 1.003 1.002 1.001 1.000 0.999 0.998 0.997 80 -40 Temperature (°C) 20 40 60 80 Maximum Transient Duration vs. Reset Threshold Overdrive 400 30 25 Maximum Transient Duration (µs) Reset Propagation Delay (µs) 0 Temperature (°C) Power-Down Reset Propagation Delay vs. Temperature VOD = 10mV 20 15 10 VOD = 100mV 5 0 -40 -20 350 300 250 200 150 100 50 0 -20 0 20 40 Temperature (°C) 3560.2006.03.1.2 60 80 1 10 100 1000 Reset Threshold Overdrive, VTH - VCC (mV) 5 AAT3560/2/4 NanoPower™ Voltage Detector Functional Block Diagram VCC + RESET (RESET) - + - VREF GND Functional Description General The AAT3560 series of NanoPower voltage detectors monitor a system power supply and assert an output signal (low for AAT3562 and AAT3564; high for AAT3560) when the supply voltage drops below a factory-programmed threshold voltage. The output signal will remain valid until the input voltage falls below the minimum operating voltage of 1V. Below this value, the output voltage is undefined. When the input voltage rises above the factory-programmed threshold, the output signal will resume its inactive state. An active noise-suppression circuit in the AAT3560/2/4 gives the output excellent immunity from power supply transients. See graph titled “Maximum Transient Duration vs. Reset Threshold Overdrive” for further information. VIN Minimum Operating Voltage Detection Voltage Level Ground Output Voltage Ground Output Voltage Undefined Figure 1: AAT3562 Timing Diagram. 6 3560.2006.03.1.2 AAT3560/2/4 NanoPower™ Voltage Detector Factory-Trimmed Reset Thresholds1 and Ordering Information Reset Threshold Voltage, VTH (V) Ordering Part Number2 AAT3560IGY-2.20-T1 AAT3562IGY-2.20-T1 AAT3562IGY-2.30-T1 AAT3560IGY-2.50-T1 AAT3562IGY-2.50-T1 AAT3562IGY-2.70-T1 AAT3562IGY-3.10-T1 Package Marking Code3 EBXYY FWXYY FXXYY ECXYY IPXYY FOXYY KOXYY TA = 25°C TA = -40°C to +85°C MIN TYP MAX MIN MAX 2.167 2.200 2.233 2.145 2.255 2.266 2.300 2.335 2.243 2.358 2.463 2.500 2.538 2.438 2.563 2.660 3.054 2.700 3.100 2.741 3.147 2.633 3.023 2.768 3.178 All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means semiconductor products that are in compliance with current RoHS standards, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. For more information, please visit our website at http://www.analogictech.com/pbfree. 1 Contact local sales office for custom trim options. 2. Sample stock is generally held on part numbers listed in BOLD. 3. XYY = assembly and date code. 3560.2006.03.1.2 7 AAT3560/2/4 NanoPower™™ Voltage Detector Package Information SOT23-3 2.37 ± 0.27 1.30 ± 0.10 2.92 ± 0.12 0.95 BSC 4° ± 4° 0.14 ± 0.06 0.96 ± 0.21 0.86 ± 0.16 0.075 ± 0.075 1.90 BSC 0.40 ± 0.10 × 3 0.50 ± 0.10 0.54 REF All dimensions in millimeters. © Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice. Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. AnalogicTech warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with AnalogicTech’s standard warranty. Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed. Advanced Analogic Technologies, Inc. 830 E. Arques Avenue, Sunnyvale, CA 94085 Phone (408) 737-4600 Fax (408) 737-4611 8 3560.2006.03.1.2