LP3808 Datasheet, PDF (1/5 Pages) Lowpower Semiconductor inc – High-precision Low Voltage Detector

Preliminary Datasheet
LP3808
High-precision Low Voltage Detector
General Description
LP3808 is a series of high precision voltage detector
with ultra low current consumption(500nA typ. at
Vdd=3.0V). It can work at very low voltage, which
makes it perfect for system reset.
LP3808 is composed of high precision voltage
reference, comparator, output driver and resistor array.
Internally preset detect voltage has a low temperature
drift and requires no external trimming.
Two type of output, CMOS and N-channel open-drain are
available.LP3808 is available in SOT-89-3,SOT-23-3, SOT23-5
packages which is Pb free.
Ordering Information
LP3808 - □ □ □ □ □ □
F: Pb-Free
Package Type
B3: SOT23-3
B5: SOT23-5
X3: SOT89-3
Output Type
C: CMOS Output
N: Nch Open Drain
Detector Voltage
09: 0.9V
10: 1.0V
.
.
.
50: 5.0V
60: 6.0V
Marketing information
Please see website.
Feature
— High-precision detection Voltage 2%
— Detection Voltage 0.9V~6.0V (in 0.1V steps)
— Precise hysteresis 4% typ.
— Operating Voltage range 0.7V~10V
— Ultra-low current consumption 500nA typ. (at VDD
3.0V)
— Two Output forms CMOS and N-channel open-drain
Application
— Power monitor for portable equipment such as
— PDA,DSC,Mobile phone,Notebook,MP3
— CPU and Logic Circuit Reset
— Battery Checker
— Battery Back-up Circuit
— Power Failure Detector
Pin Assignment
Pin Description
Pin Number
SOT89 SOT23 SOT25
1
1
1
2
3
2
3
2
3
4,5
Pin
Name
Vout
VDD
VSS
NC
Function
Voltage Detection output
Pin
Voltage input pin
GND pin
No Connection
LP3808 – 00 Ver. 1.0 Datasheet Dec.-2006
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