SP7648 Datasheet PDF - Exar
Part Number | SP7648 | |
Description | Low Reference High Efficiency Boost Regulator | |
Manufacturers | Exar | |
Logo | ||
There is a preview and SP7648 download ( pdf file ) link at the bottom of this page. Total 13 Pages |
Preview 1 page No Preview Available ! SP7648
Low Reference High Efficiency Boost Regulator
November 2012
GENERAL DESCRIPTION
The SP7648 is an ultra-low quiescent current,
high efficiency step-up DC-DC converter ideal
for single cell Li-Ion or dual cell alkaline
battery applications to drive various LEDs. The
SP7648 combines low quiescent current and
excellent light-load efficiency of PFM control.
The SP7648 features synchronous rectification,
a 0.3Ω charging switch, an anti-ringing
inductor switch, under-voltage lockout and
programmable inductor peak current. The
device can be shut down by a 1nA active LOW
shutdown pin. A very low 0.288V reference
voltage is optimized for driving a constant
current load.
APPLICATIONS
LED Driver
Camera Flash
Handheld Portable Devices
Rev. 2.0.0
FEATURES
True Shutdown
700mA Output Current at 3.3V Input;
4.2V output
92% Efficiency from 2.7VIN to 3.3VOUT
2.7V to 4.5V Wide Input Voltage Range
5V Fixed or Adjustable Output
0.3Ω Switch
Integrated Synchronous Rectifier:0.3Ω
Anti-Ringing Switch Technology
Programmable Inductor Peak Current
Logic Shutdown Control
Low 0.8V or 0.288V Reference Voltage
Small 10-pin DFN and MSOP Package
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP7648 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
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SP7648
Low Reference High Efficiency Boost Regulator
TYPICAL PERFORMANCE CHARACTERISTICS
Fig. 4: Output Current versus Input Voltage
Fig. 5: Efficiency versus Input Voltage
Fig. 6: Output Current versus Input Voltage
Fig. 7: Efficiency versus Input Voltage
Fig. 8: Output Current versus Input Voltage
Fig. 9: Efficiency versus Input Voltage
© 2012 Exar Corporation
5/13
Rev. 2.0.0
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for SP7648 electronic component. |
Information | Total 13 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ SP7648.PDF Datasheet ] |
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Featured Datasheets
Part Number | Description | MFRS |
SP7648 | The function is Low Reference High Efficiency Boost Regulator. Exar | |
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