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ILC6363

Fairchild Semiconductor
Part Number ILC6363
Manufacturer Fairchild Semiconductor
Description Step-Up DC-DC Converter for One-Cell Lithium-Ion Batteries
Published Apr 5, 2005
Detailed Description www.fairchildsemi.com ILC6363 Step-Up DC-DC Converter for One-Cell Lithium-Ion Batteries Features • ILC6363CIR-50: Fixe...
Datasheet PDF File ILC6363 PDF File

ILC6363
ILC6363

Overview
www.
fairchildsemi.
com ILC6363 Step-Up DC-DC Converter for One-Cell Lithium-Ion Batteries Features • ILC6363CIR-50: Fixed 5.
0V output; custom voltages are available upon request • ILC6363CIR-ADJ: Adjustable output to 6V maximum • Capable of 500mA output current • Peak efficiency: > 90% at VOUT = 3.
6V, IOUT = 300mA, VIN = 3.
6V • No external diode is required (synchronous rectification) • Battery input current of 300µA at no load • True load disconnect from battery input in shutdown (1µA) • Oscillator frequency: 300kHz ±15% • Low battery detector with 100ms transient rejection delay • Power good output flag when VOUT is in regulation • MSOP-8 package voltage exceeds the output voltage by more than 800mV, the output will begin to track the input linearly.
The ILC6363 is a direct replacement for ILC6360, in applications where SYNC pin is not used.
The PFM or PWM operating mode is user selectable through SEL pin connected to ground or left open, respectively.
The choice should be dependent upon the current to be delivered to the load: PFM is recommended for better efficiency at light load,while PWM is recommended for more than 50mA load current.
In shutdown mode, the device allows true load disconnect from battery input.
Configured as a 300kHz, fixed frequency PWM/PFM boost converter, the ILC6363 can perform a limited buck operation in PFM mode, when the input voltage is up to 0.
8V higher than the output voltage.
The ILC6363 is unconditionally stable with no external compensation; the sizes of the input and output capacitors influence input and output ripple voltages, respectively.
Since the ILC6363 has an internal synchronous rectifier, the standard fixed voltage version requires minimal external components: an inductor, an input capacitor, and an output capacitor.
If a tantalum output capacitor is used, then an additional 10µF ceramic output capacitor will help reduce output ripple voltage.
Other features include a low battery input detector with a built-in100ms transient rejec...


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