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SN3910 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Universal High Brightness LED Driver - SI-EN

भाग संख्या SN3910
समारोह Universal High Brightness LED Driver
मैन्युफैक्चरर्स SI-EN 
लोगो SI-EN लोगो 
पूर्व दर्शन
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<?=SN3910?> डेटा पत्रक पीडीएफ

SN3910 pdf
Pin Configurations
Package
SOP-8
Preliminary
VREF
PWMD
LD
GND
Pin Configurations
VIN
TOFF
CS
GATE
SN3910
Pin Description
Pin
VREF
PWMD
LD
GND
GATE
CS
TOFF
VIN
Pin No.
1
2
3
4
5
6
7
8
Description
This pin provides reference voltage about 1.25V, no bypass capacitor is
needed.
This is the PWM dimming input of the IC. When this pin is pulled to GND,
the gate driver is turned off.
When the pin is pulled high, the gate driver operates normally.
This pin is the linear dimming input and sets the current sense threshold as
long as the voltage at the pin is less than 250mV (typ). It can also used as
temperature compensation threshold voltage.
Ground return for all internal circuitry. This pin must be electrically
connected to the ground of the power train.
This pin is the output gate driver for an external N-channel power
MOSFET.
This pin is the current sense pin used to sense the FET current by means of
an external sense resistor.
When this pin exceeds the lower of either the internal 250mV or the voltage
at the LD pin, the gate output goes low.
This pin sets the off time of the power mos and this chip operates in
constant off time mode. It can be floating with the internal set off time
510ns. When a capacitor is connected between TOFF and GND, the off time
is increased.
This pin is the input of an 8V – 450V voltage supply through a resistor, it
must be bypassed with a capacitor to GND.
Jul 2008 Ver0.1
2 SI-EN Technology

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डाउनलोड[ SN3910 Datasheet.PDF ]


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