ZXSC410 Zetex Semiconductors plc., ZXSC410 Datasheet
ZXSC410
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ZXSC410 Summary of contents
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... VOLTAGE MODE BOOST CONVERTER DESCRIPTION The ZXSC410 is voltage mode boost converter in SOT23-6 package. Its excellent load and line regulation means that for the full supply range from lithium Ion cells, the output voltage will typically change by less than 1%. Using high efficiency Zetex switching transistors allow output voltages of tens of volts depending on the selected transistor ...
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... FB SENSE 1 > 2V 300 IN OUT 0.7V 2 DRIVE 1.8V < V < -300nA 2.5 EOR I = 1mA 0 EOR T = 25° (ZXSC420 only) * (ZXSC410 only) Limits Units Typ Max 8 V 220 A 4 3.0 % 0.005 %/ C 1.7 s 200 kHz -15 A 300 309 mV -4 ...
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... TYPICAL CHARACTERISTICS ISSUE 2 - May 2003 ZXSC410 ZXSC420 ...
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... Block Diagrams Bandgap Shutdown STDN Reference R1 + Comp Comp GND V SENSE FB . Once Fig. 1 ZXSC410 SENSE gets FB Fig. 1 ZXSC420 4 VCC Bias Generator Monostable Dynamic U1 DRIVE 2µs Drive ISSUE 2 - May 2003 ...
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... ISSUE 2 - May 2003 Description Supply voltage, 1.8V to 8V. Ground Shutdown ZXSC410 / End of regulation ZXSC420 Inductor current sense input. Internal threshold voltage set to 28mV. Connect external sense resistor. Reference voltage. Internal threshold set to 300mV. Connect external resistor network to set output voltage. ...
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... and DIS OUT IN and T 1.7µs (internally set by ZXSC410) OFF and = efficiency i.e. 100 Operating frequency can be derived by OFF Below is a table Size Tolerance DC Range 0805 ± ...
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... Output voltage adjustment The ZXSC410/420 are adjustable output converters allowing the end user the maximum flexibilty. For adjustable operation a potential divider network is connected as follows: V OUT GND The output voltage is determined by the equation OUT FB RB where V =300mV ...
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... ZXSC410 ZXSC420 REFERENCE DESIGNS ZXSC410 DC-DC Controller V =2. =5V; I =100mA OUT LOAD Bill of Materials Ref Value Part Number U1 ZXSC410E6 U2 ZX3CDBS1M832 L1 22µH CMD4D11-220 R1 100m LR1206 / RL1220 R2 16k Generic Generic 22µF/6V3 GRM Series C2 22µF/6V3 GRM Series C3 1nF ...
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... V=1V/DIV; T=10µS/DIV Switching Waveform ISSUE 2 - May 2003 Performance Graphs V=50mV/DIV; T=10µS/DIV Output Ripple 9 ZXSC410 ZXSC420 ...
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... ZXSC410 ZXSC420 ZXSC410 as Triple Output TFT Bias ZXSC410 as Triple Output TFT Bias =9V/180mA VDD V =18V/10mA ON V =9V/10mA OFF A =9V/180mA VDD V =27V/10mA ON V =9V/10mA OFF 10 ISSUE 2 - May 2003 ...
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... ISSUE 2 - May 2003 ) of ON The delay is set by the RC time constant of R1 and C1. The diode, D1, discharges the gate of the PMOS when the main system supply is turned off, guaranteeing a delay every turn on cycle. 11 ZXSC410 ZXSC420 ...
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... ZXSC410 ZXSC420 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 2.80 3.00 © Zetex plc 2003 Europe Zetex plc Zetex GmbH Fields New Road Streitfeldstraße 19 Chadderton D-81673 München Oldham, OL9 8NP ...