LP3809A-12B3F POWER [Lowpower Semiconductor inc], LP3809A-12B3F Datasheet
LP3809A-12B3F
Manufacturer Part Number
LP3809A-12B3F
Description
Micro-Power Voltage Detectors, Reset Of MCU With Delay Time
Manufacturer
POWER [Lowpower Semiconductor inc]
Datasheet
1.LP3809A-12B3F.pdf
(6 pages)
General Description
The
detector
voltage level for microprocessors (µP) or
digital systems. It provides internally fixed
threshold levels with 0.1V per step ranging
from 1.2V to 5V, which covers most digital
applications. It features low supply current of
3µA. The LP3809 performs supervisory
function by sending out a reset signal
whenever the VDD voltage falls below a
preset threshold level. This reset signal will
last the whole period before VDD recovering.
Once
threshold level, the reset signal will be
released after a certain delay time. Available
in the 5-lead of SOT-23 packages.
Pin Configurations
Pin No.
Type A
Type B
Typical Application Circuit
LP3809-datasheet Oct.-2004
LP3809
VDD
supervising
SOT-23
RESET
GND
recovered
is
1
a
micro-power
the
GND
RESET
Micro-Power Voltage Detectors,
2
upcrossing
power
Reset Of MCU With Delay Time
VDD
VDD
voltage
supply
3
the
Features
Applications
Ordering Information
Note:
1. Output Voltage range from 1.2V to 5.0V in
0.1V increments.
2. 2.7V output order is LP3809A-27B3F.
1-1
Built-in Recovery Delay Include 210ms
Internally Fixed Threshold 1.2V to 5V in
0.1V Step
No External Components Required
High Accuracy
Low Supply Current 3 A
Low Functional Supply Voltage 0.9V
N-Channel Open-Drain output
Quick Start-Up
Computers
CPU/MCU/DSP
Portable
Battery-Powered Equipment
LP3809□ - □ □ □ □ □
A: Type A
B: Type B
Type
1.5%
Output Voltage:
12: 1.2V
13: 1.3V
B3: SOT-23
50: 5.5V
Package
LP3809
F:PB-Free
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LP3809A-12B3F Summary of contents
Page 1
... Computers upcrossing the CPU/MCU/DSP Portable Battery-Powered Equipment Ordering Information LP3809□ - □ □ □ □ □ VDD VDD Note: 1. Output Voltage range from 1.2V to 5.0V in 0.1V increments. 2. 2.7V output order is LP3809A-27B3F. 1-1 LP3809 1.5% F:PB-Free Package B3: SOT-23 Output Voltage: Type 12: 1.2V A: Type A 13: 1.3V B: Type B 50: 5.5V ...
Page 2
... RESET Output Voltage Low Thermal Shutdown Temperature LP3809-datasheet Oct.-2004 Symbol Test Conditions VEN ≥ 1.2V, IOUT = IQ 0mA VTH TA = 27°C ΔVTH Trd Drop = VTH -125mV LP3809A/B VDD ≥ 1.02×VTH 3 = VDD < VTH ISINK VOL >3.5mA TSD 2-2 LP3809 Min Typ Max Units 3 μA 1.2 1 ...
Page 3
Typical Operating Characteristics LP3809-datasheet Oct.-2004 3-3 LP3809 ...
Page 4
LP3809-datasheet Oct.-2004 4-4 LP3809 ...
Page 5
LP3809-datasheet Oct.-2004 5-5 LP3809 ...
Page 6
Package Information LP3809-datasheet Oct.-2004 6-6 LP3809 ...