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Part: AAT3562IGY-340-T1
Category:
Power Management
-> Supervisory Circuits
-> Voltage Detectors
Description: Nanopower Voltage Detector
Company: Advanced Analogic Technologies
Datasheet: Download AAT3562IGY-340-T1 datasheet File size : 253 kB
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Datasheet text preview:
AAT3560/2/4
NanoPower Voltage Detector General Description
The AAT3560 Series of PowerManagerTM products is a member of AATI's Total Power Management ICTM (TPMICTM) product family. These voltage detectors are ideal for monitoring voltage supplies in portable systems, where extended battery life is critical. They provide a low cost, 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 are 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 battery operated equipment. The AAT3560/2/4 are available in a 3 pin SOT-23 package and are specified over -40 to 85°C operating temperature range..
Features
· · · · · ·
PowerManagerTM
· ·
1.2V to 5.5V Input voltage range 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 Available output configurations: · Open-drain output · CMOS active high output · CMOS active low output Temp range -40 to 85°C 3 pin SOT-23 package
Preliminary Information
Applications
· · · · · · · Portable Electronics Battery Packs Battery Charger Circuits Data Acquisition Systems Power Supplies Notebook Computers Intelligent Instruments
Typical Application
DC/DC Converter
VCC
µP
+
Li Ion
VCC
AAT3560 AAT3562 RESET (RESET) AAT3564 GND
SUSPEND
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AAT3560/2/4
NanoPower Voltage Detector Pin Descriptions
AAT3560, 3562, 3564 (SOT23-3)
Pin #
1 2 3
Symbol
GND RESET (RESET) VCC
Function
Ground Reset output. See table below for output configurations. Supply Voltage (+1.2V to +5.5V)
Part Number Descriptions
SOT23-3 Part Number
AAT3560 AAT3562 AAT3564
Part Description
RESET Push Pull Active High RESET Push Pull Active Low RESET Open Drain, Active Low
Pin Configuration
3-Pin SOT23 (Top View)
GND (RESET) RESET
1 3 2 VCC
2
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AAT3560/2/4
NanoPower Voltage Detector Absolute Maximum Ratings
Symbol
VCC VRESET IMAX IRESET TJ TLEAD
(TA=25°C unless otherwise noted) Value
-0.3 to 5.5 -0.3 to VCC+0.3 -0.3 to 5.5 20 20 -40 to 150 300
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
Units
V V mA mA °C °C
Note: 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.
Thermal Information
Symbol
JA PD
Description
Maximum Thermal Resistance Maximum Power Dissipation 1
1
Value
200 320
Units
°C/W mW
Note 1: Mounted on FR4 board.
Electrical Characteristics
(VIN = 5V, TA = -40 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 and VCC = 2.5V for 2.32/2.2V versions ) Symbol Description
VCC IQ VTH dVTH/ºC VOL VOH VOL Operation Voltage Quiescent Current RESET Threshold (Table 1) RESET Threshold Tempco RESET Low Output Voltage AAT3562, AAT3564 RESET High Output Voltage, AAT3562 RESET Low Output Voltage AAT3560
Conditions
TA = 0 to 70ºC TA = -40 to 85ºC VCC = 3V VCC = 5.5V TA = 25º C TA = -40ºC to +85ºC
Min
1.0 1.2
Typ
Max
5.5 5.5 2 3 VTH+1.5% VTH+2.5% 0.3 0.4
Units
V µA V ppm/°C V V V
0.85 1.05 VTH - 1.5% VTH VTH - 2.5% VTH 40
VOH IDOFF
RESET High Output Voltage AAT3560 RESET Leakage Current, AAT3564
ISINK =1.6mA, VCC > 2.1V, RESET asserted ISINK =100µA, VCC >1.2V, RESET asserted ISOURCE = 800 µA VCC -1.5 ISINK =1.2mA, VCC > 1.2V, RESET not asserted ISINK = 3.2mA, VCC > 4.5V, RESET not asserted ISOURCE = 500µA, VCC > 0.8VCC 2.1V, RESET asserted ISOURCE = 50µA, VCC > 0.8VCC 1.2V, RESET asserted VCC > VTH
0.3 0.4
V V V V
1
µA
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AAT3560/2/4
NanoPower Voltage Detector Typical Characteristics
(Unless otherwise noted, VIN = 5V, TA = 25°C)
Normalized Reset Threshold vs. Temperature
Normalized Threshold
40 60 80
Supply Current vs. Temperature
1.40
Supply Current (µA)
1.20 1.00 0.80 0.60 0.40 0.20 0.00 -40 -20
V CC = 5 V
1.003 1.002 1.001 1.000 0.999 0.998 0.997 -40 -20 0 20 40 60 80
V CC = 3 V
0
20
Temperature (°C)
Temperature (°C)
Power-Down Reset Propagation Delay vs. Temperature
Reset Propagation Delay (µs)
30 25 20 15 10 5 0 -40 400
Maximum Transient Duration vs. Reset Threshold Overdrive
Maximum Transient Duration (µS)
350 300 250 200 150 100 50 0 1 10 100 1000
V OD = 1 0 m V
V OD = 1 0 0 m V
-20
0
20
40
60
80
Temperature (°C)
Reset Threshold Overdrive, VTH-VCC (mV)
4
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AAT3560/2/4
NanoPower Voltage Detector Functional Block Diagram
VCC
+ RESET (RESET) -
+ -
VREF
GND
Functional Description
General
The AAT3560 series of Nanopower voltage detectors, monitors a system power supply and asserts an output signal (Low for AAT3562, AAT3564 and High for AAT3560) when the supply voltage drops
VIN
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.
Minimum Operating Voltage Output Voltage
Detection Voltage Level Ground
Ground Output Voltage Undefined
Figure 1. AAT3562 Timing Diagram
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Others parts begin by aa
AA-1 AA-2 AA-3 AA-4 AA-5 AA-6 AA-7
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