AAT3500/AAT3501
MicroPowerä
ää
ä 3-Pin Microprocessor Reset
Advanced Analogic Technologies, Inc.
1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086
(408)524-9684 Fax (408)524-9689
General Description
The AAT3500 family of Microprocessor Reset
Circuits provides the ultimate in versatility,
allowing system designers full customization of
the Reset function without any additional
components. Threshold voltage, reset active
period and output drive type are all factory
programmed options.
The AAT3501 includes an over-temperature
shutdown function in addition to all of the features
included in the AAT3500.
The AAT3500/AAT3501 are available in the space
saving 3-pin SOT-23 surface mount package.
Features
•=Tight voltage tolerance: ±1.5%
•=Low quiescent current: 3µA
•=32 voltage options from 1.5V to 5.0V
•=8 Reset active period options
•=3 output options:
•=Open drain
•=Inverting
•=Non-inverting
•=Low Tempco: 100ppm/°C
•=3-pin SOT-23 package
Applications
•=Computers
•=Industrial Controllers
•=Portable Electronics
•=Intelligent Instruments
•=Critical µP and µC Supply Monitoring
•=Power-On reset circuits
Typical Application Pin Configuration
1
2
3
GND
RESET
VDD
3-lead SOT-23
(Top View)
AAT3500
VDD
RESET
GND
AAT3501
(RESET)
RESET
INPUT
µP
VDD
V
DD
Advanced Information
4-1
PowerManagerTM
AAT3500/AAT3501
MicroPowerä
ää
ä 3-Pin Microprocessor Reset
Advanced Analogic Technologies, Inc.
1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086
(408)524-9684 Fax (408)524-9689
Absolute Maximum Ratings (TA=25°C unless otherwise noted)
Symbol Description Value Units
VIN Input Voltage 6 V
TJ Operating Junction Temperature Range -40 to 150 °C
ΘJA Maximum Thermal Resistance (SOT-23-3) 260 °C/W
PD Maximum Power Dissipation (SOT-23-3) 380 mW
TLEAD Maximum Soldering Temperature (at leads, 10 sec) 300 °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.
Electrical Characteristics (TJ=25°C unless otherwise noted)
Symbol Description Conditions Min Typ Max Units
VRANGE Input Voltage Range 1 5.5 V
IDD Supply Current VDD = 3.0V 3 µA
ISD Shutdown Current VIN = 5V, EN = low 1 µA
VTH Reset Threshold Voltage VTHNOM
-1.5% VTHNOM
+1.5% mV
VDD = 1.6V 200 Ω
RDSON(UP) Pull-up Internal Resistance VDD = 5.0V 100 Ω
VDD = 1.6V 200 Ω
RDSON(DN) Pull-down Internal Resistance VDD = 5.0V 100 Ω
TDELAY VDD to Reset Delay 100mV overdrive 40 µs
TRESET Reset Active Period TRNOM
-35% TRNOM
+35% s
TSD Over Temp Shutdown Threshold AAT3501 only 80 °C
THYS Over Temp Shutdown Hysteresis AAT3501 only 20 °C
TC Reference Voltage Temp Coeff 0°C < TA < 70°C ±100 ppm/°C
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