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PDF LC9005 Data sheet ( Hoja de datos )
| Número de pieza | LC9005 | |
| Descripción | High-Precision Low Voltage Detector | |
| Fabricantes | Leadchip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LC9005 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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DESCRIPTION
LC9005 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.
LC9005 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.
One type of output, N-channel open-drain is
available.
LC9005 is available in small size SOT23-3
package which is Pb free.
LC9005
High-Precision Low Voltage Detector
FEATURES
• High-precision detection Voltage： ±3%
• 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)
APPLICATIONS
• 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
TYPICAL APPLICATION
ELECTRICAL CHARACTERISTICS
Detector threshold= 0.9V
1. E-05
1. E-06
1. E-07
1. E-08
0
-40 ºC
2 5ºC
7 0ºC
12345
Input voltage (V)
6
www.leadchip.com.cn
Copyright@2007, Leadchip semi
1
Your final power solution
1 page  
FUNCTION DESCRIPTION
In LC9005, a high precision low temperature
coefficient reference voltage is applied to the
negative input of a comparator. Input voltage,
divided by resistor array of Ra, Rb and Rc, is
applied to the positive input of the comparator.
Output of the comparator controls a pair of
NMOS and PMOS switches, generating the
hysteresis. Output of the comparator passes
a series of buffer to drive the output NMOS.
OUTPUT ACTION
LC9005
No. Operation status
I VDD>-VDET
II VDD drops below - VDET
III VDD drops further below
VDDL
IV VDD rises above VDDL
V VDD rises above + VDET
Output status
Output voltage is equal to the supply voltage
Output voltage equals to GND level
Output voltage is undefined
Output voltage equals to GND level
Output voltage equals to supply voltage，VHYS=(+
VDET)-(- VDET)
www.leadchip.com.cn
Copyright@2007, Leadchip semi
5
Your final power solution
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet LC9005.PDF ] | |
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