ZXSC400E6TA Diodes Zetex, ZXSC400E6TA Datasheet
ZXSC400E6TA
Specifications of ZXSC400E6TA
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ZXSC400E6TA Summary of contents
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... White LED backlighting for colour LCD panels General LED backlighting High performance white LED flashlights General LED driving from batteries ORDERING INFORMATION DEVICE REEL TAPE SIZE WIDTH 7“ 8mm ZXSC400E6TA DEVICE MARKING C400 ISSUE 1 - JANUARY 2003 PINOUT V GND QUANTITY PER REEL STDN 3000 units 1 ...
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ZXSC400 ABSOLUTE MAXIMUM RATINGS V -0.3V to +10V CC DRIVE -0. EOR -0. STDN -0.3V to The lower of (+5.0V SENSE -0.3V to The lower of (+5.0V Operating Temp. -40°C to +85°C ...
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TYPICAL CHARACTERISTICS ISSUE 1 - JANUARY 2003 3 ZXSC400 ...
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ZXSC400 DESIGN INFORMATION IC operation description Bandgap Reference All threshold voltages and internal currents are derived from a temperature compensated bandgap reference circuit with a reference voltage of 1.22V nominal. Dynamic Drive Output Depending on the input signal, the output ...
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APPLICATIONS INFORMATION Switching transistor selection The choice of switching transistor has a major impact on the converter efficiency. For optimum performance, a bipolar transistor with low V CE(SAT) required. The V of the switching transistor is also an CEO important ...
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ZXSC400 Peak current definition In general, the I value must be chosen to ensure that PK the switching transistor, Q1 full saturation with maximum output power conditions, assuming worse-case input voltage and transistor gain under all operating temperature ...
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Open-circuit protection For applications where the LED chain might go open-circuit a Zener diode can be connected across the LED chain preventing over-voltage and possible damage to the main switching transistor. The Zener diodes should be selected by ensuring its ...
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ZXSC400 Dimming Control using a DC voltage For applications where the shutdown pin is not available a DC voltage can be used to control dimming. By adding resistors R2 and R3 and applying a DC voltage, the LED current can ...
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Layout considerations Layout is critical for the circuit to function in the most efficient manner in terms of electrical efficiency, thermal considerations and noise. For ‘step-up converters’ there are four main current loops, the input loop, power-switch loop, rectifier loop ...
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ZXSC400 REFERENCE DESIGNS Li - Ion to 2 LED converter 100 2 White LEDs I =20mA LED 2.5 3.0 Input voltage (V) Input Voltage vs Efficiency Bill of Materials Ref Value Part Number U1 ZXSC400 U2 ...
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Li - Ion to 3 LED converter 100 3 White LEDs I =20mA LED 2.5 3.0 Input Voltage (V) Input Voltage v Efficiency Bill of Materials Ref Value Part Number U1 ZXSC400 U2 ZX3CDBS1M832 L1 10 ...
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ZXSC400 Li - Ion to 4 LED converter 90 4 White LEDs I =20mA LED 2.5 3.0 Input voltage (V) Input Voltage vs Efficiency Bill of Materials Ref Value Part Number U1 ZXSC400 U2 ZX3CDBS1M832 L1 10 ...
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Li - Ion to 6 LED converter 90 6 White LEDs I =20mA LED 2.5 3.0 Input voltage (V) Input Voltage vs Efficiency Bill of Materials Ref Value Part Number U1 ZXSC400 Q1 FMMT619 D1 ZHCS1000 L1 ...
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ZXSC400 Li - Ion to 8 LED converter 90 8 White LEDs I =20mA LED 2.5 3.0 Input voltage (V) Input Voltage vs Efficiency Bill of Materials Ref Value Part Number U1 ZXSC400 Q1 FMMT619 D1 ZHCS1000 ...
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Notes ISSUE 1 - JANUARY 2003 15 ZXSC400 ...
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ZXSC400 PACKAGE OUTLINE CONTROLLING DIMENSIONS IN MILLIMETRES APPROX CONVERSIONS INCHES. PACKAGE DIMENSIONS Millimetres DIM Min Max A 0.90 1.45 A1 0.00 0.15 A2 0.90 1.30 b 0.35 0.50 C 0.09 0.20 D ...