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PDF A4810B Data sheet ( Hoja de datos )
| Número de pieza | A4810B | |
| Descripción | ULTRA-LOW VOLTAGE DETECTOR | |
| Fabricantes | AiT Semiconductor | |
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AiT Semiconductor Inc.
www.ait-ic.com
A4810A/B
HIGH PRECISION BUILT-IN DELAY CIRCUIT
FULL TEMP RANGE, ULTRA-LOW VOLTAGE DETECTOR
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.
Precise monitoring of 2.7V, 3.0V, 3.3V and
5.0V supplies
140 ms min. Power-On Reset 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: -40°C to +85°C,
A4810B: -40°C to +105°C
Available in SOT-23 package
With a low supply current of only 2μA (Typ.), the
A4810A/B are ideal for use in portable equipment.
APPLICATION
A4810A/B is available in SOT-23 package.
Microprocessor Systems
Computers
ORDERING INFORMATION
Controllers
Intelligent Instruments
Package Type
Part Number
A4810AE3R-XXXDZ
SOT-23
A4810AE3VR-XXXDZ
E3 A4810BE3R-XXXDZ
A4810BE3VR-XXXDZ
XXX: Detector Voltage
263 = 2.63V ;
293 =2.93V
Note
D: Delay Time
250ms
Z: C=CMOS, N=Nch
V: Green Package
R: Tape & Reel
AiT provides all RoHS products
Suffix “V” means Halogen free Package
Portable/Battery-Powered Equipment
Automotive
TYPICAL APPLICATION
REV1.1
- APR 2011 RELEASED, SEP 2012 UPDATED -
-1-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
A4810A/B
HIGH PRECISION BUILT-IN DELAY CIRCUIT
FULL TEMP RANGE, ULTRA-LOW VOLTAGE DETECTOR
DETAILED INFORMATION
Function Diagram
Figure 1 Function Diagram
Reset Timing
The reset signal is asserted-low for the A4810A/B-when the VDD signal falls below the threshold trip voltage
and remains asserted for 140ms minimum after the VDD has risen above the threshold.
Figure 2 A4810A/B Reset Timing Diagram
REV1.1
- APR 2011 RELEASED, SEP 2012 UPDATED -
-5-
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet A4810B.PDF ] | |
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