zxld1601 Zetex Semiconductors plc., zxld1601 Datasheet
zxld1601
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zxld1601 Summary of contents
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... ADJUSTABLE BOOST CONVERTER WITH INTERNAL SWITCH IN SC70 DESCRIPTION The ZXLD1601 is a PFM inductive boost converter designed to provide output voltages 28V from a 2.5V to 5.5V input supply. The ZXLD1601 includes the output switch and peak current sense resistor, and can provide up to 10mA output current at maximum output voltage ...
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... ZXLD1601 ABSOLUTE MAXIMUM RATINGS (Voltages to GND unless otherwise stated) Input voltage ( output voltage (V ) 30V LX Switch output current (I ) 500mA LX Power dissipation (PD) 300mW Operating temperature (T ) -40 to 85°C OP Storage temperature (T ) -55 to 150°C ST Junction temperature (Tj ) 125°C MAX ELECTRICAL CHARACTERISTICS: Symbol ...
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... The maximum PWM signal frequency during this mode of operation should be kept as low as possible to minimize errors due to the turn-off delay ISSUE 3 - AUGUST 2004 (Test conditions =3V AMB Conditions 10kHz < f < 100kHz, VENH =VIN f=30kHz f < 1kHz, VENH =VIN 3 ZXLD1601 (1) =25°C unless otherwise stated ) Min Typ Max Units 20 100 % 4 kHz 52.5 ...
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... ZXLD1601 PIN DESCRIPTION Pin No. Name Description LX Output of NDMOS switch 1 2 GND Ground (0V Feedback pin for voltage control loop Nominal voltage 1.025V 4 EN Enable input (active high to turn on device) Also used to adjust output current by PWM signal. Connect Output voltage sense ...
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... Gated PWM operation (1.025V REF The internal circuitry of the ZXLD1601 is turned off when no signal is present on the ‘EN’ pin for more than 120µs (nominal). A low frequency signal applied to the EN pin will therefore gate the device ‘on’ and ‘off’ at the ...
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... ZXLD1601 TYPICAL CHARACTERISTICS 6 ISSUE 3 - AUGUST 2004 ...
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... TYPICAL PERFORMANCE GRAPHS (For typical applications circuit ISSUE 3 - AUGUST 2004 =3V, L=22µH Murata LQH32CN series ZXLD1601 =25°C unless otherwise stated ...
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... Square wave signals applied to the EN pin, for example, will turn the device on and produce a nominal regulated output of 13.5V. The ZXLD1601 contains a timing circuit that switches the device on a few microseconds after the application of a rising edge to EN and turns it back off again nominally 120µ ...
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... Recommended inductor values for the ZXLD1601 are in the range 6.8µH to 22µH. The inductor should be mounted as close to the device as possible with low resistance connections to the LX and VIN pins. Suitable coils for use with the ZXLD1601 are shown in the table below: ) exceeds the IN ...
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... It should also have a peak current rating above the peak coil current and a continuous current rating higher than the maximum output load current. The table below gives some typical characteristics for diodes that can be used with the ZXLD1601: Diode V @ 100mA (mV) I ...
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... NOTES: ISSUE 3 - AUGUST 2004 ZXLD1601 ...
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... ZXLD1601 PACKAGE OUTLINE ORDERING INFORMATION DEVICE DEVICE DESCRIPTION ZXLD1601H6 Boost converter in SC70-6 -40°C to +85°C TA reels 3000 devices, TC reels 10000 devices © Zetex Semiconductors plc 2004 Europe Americas Zetex GmbH Zetex Inc Streitfeldstraße 19 700 Veterans Memorial Hwy D-81673 München Hauppauge, NY 11788 ...