ILC6363

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 V_OUT= 3.6V, I_OUT= 300mA,V_IN= 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


Application

• Cellular phones
• Palmtops, PDAs and portable electronics
• Equipment using single Lithium-Ion batteries


Pinout




Specifications

Parameter	Symbol	Ratings	Units
Voltage on VOUT pin	VOUT	-0.3 to 7	V
Voltage on LBI, Sync, LBO , POK , VFB , LX and VIN pins	-	-0.3 to 7	V
Peak switch current on LX pin	ILX	1	A
Current on LBO pin	ISINK(LBO)	5	mA
Continuous total power dissipation at 85	PD	315	mW
Short circuit current	ISC	Internally protected (1 sec. duration)	A
Operating ambient temperature	TA	-40 to 85
Maximum junction temperature	TJ(MAX)	150
Storage temperature	Tstg	-40 to 125
Lead temperature (soldering 10 sec.)		300
Package thermal resistance	JA	206	/W

Description

The ILC6363 step-up/step-down DC-DC converter is a 1switch mode converter, capable of supplying up to 500mA output current, at a fixed or user selectable output voltage. The range of input, and output voltage options makes the ILC6363 ideal for Lithium-ion (Li-ion), or any other battery application, where the input voltage range spans above and below the regulated output voltage. When ILC6363's input 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 rejection delay and a power good indicator useful as a system power on reset.