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PDF ZXCT1008 Data sheet ( Hoja de datos )
| Número de pieza | ZXCT1008 | |
| Descripción | AUTOMOTIVE HIGH-SIDE CURRENT MONITOR | |
| Fabricantes | Zetex Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ZXCT1008 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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AUTOMOTIVE HIGH-SIDE CURRENT MONITOR
ZXCT1008
www.DataSheet4U.com
DESCRIPTION
The ZXCT1008 is a high side current sense monitor.
Using this device eliminates the need to disrupt the
ground plane when sensing a load current.
It takes a high side voltage developed across a current
shunt resistor and translates it into a proportional
output current.
A user defined output resistor scales the output
current into a ground-referenced voltage.
The wide input voltage range of 20V down to as low as
2.5V make it suitable for a range of applications. The
ability to withstand high voltage transients and
reverse polarity connection, makes this part very
suitable for automotive and other transient rich
environments.
FEATURES
• Low cost, accurate high-side current sensing
• -40 to +125°C temperature range
• Up to 500mV sense voltage
• 2.5V – 20V supply range
• 4µA quiescent current
• 1% typical accuracy
• SOT23
APPLICATIONS
• Automotive current measurement
• DC motor and solenoid control
• Over current monitor
• Power management
APPLICATION CIRCUIT
ORDERING INFORMATION
DEVICE
ZXCT1008FTA
REEL
SIZE
7”
TAPE
WIDTH
8mm
QUANTITY PER
REEL
3,000 units
DEVICE MARKING
• 108
ISSUE 3 - FEBRUARY 2007
1
1 page  
ZXCT1008
POWER DISSIPATION
The maximum allowable power dissipation of the
device for normal operation (Pmax), is a function of
the package junction to ambient thermal resistance
(θja), maximum junction temperature (Tjmax), and
ambient temperature (Tamb), according to the
expression:
Pmax = (Tjmax – Tamb) / θja
The device power dissipation, PD is given by the
expression:
PD=Iout.(Vin-Vout) Watts
APPLICATIONS INFORMATION
The following lines describe how to scale a load
current to an output voltage.
Vsense = Vin - Vload
Vout = 0.01 x Vsense x Rout1
E.g.
A 1A current is to be represented by a 100mV output
voltage:
1) Choose the value of Rsense to give 50mV >
Vsense > 500mV at full load.
For example Vsense = 100mV at 1.0A.
Rsense = 0.1/1.0 => 0.1 Ω
2) Choose Rout to give Vout = 100mV,
when Vsense = 100mV.
Rearranging 1 for Rout gives:
Rout = Vout /(Vsense x 0.01)
Rout = 0.1 / (0.1 x 0.01) = 100 Ω
ISSUE 3 - FEBRUARY 2007
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ZXCT1008.PDF ] | |
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