High Efficiency Boost Converter

RT4813A

The RT4813A allows systems to take advantage of new battery chemistries that can supply significant energy when the battery voltage is lower than the required voltage for system power ICs. By combining built-in power transistors, synchronous rectification, and low supply current; this IC provides a compact solution for systems using advanced Li-Ion battery chemistries.

The RT4813A is a boost regulator designed to provide a minimum output voltage from a single-cell Li-Ion battery, even when the battery voltage is below system minimum. In boost mode, output voltage regulation is guaranteed to minimum load current of 2.5A. Quiescent current in Shutdown Mode is less than 1μA, which maximizes battery life.

Applications

Single-Cell Li-Ion, LiFePO4 Smart-Phones
Portable Equipment

Key Spec.

	RT4813A
Status	Active
Vin (min) (V)	1.8
Vin (max) (V)	5.5
Vout (min) (V)	1.8
Vout (max) (V)	5.5
Output Adj. Method	Resistor
Iq (typ) (mA)	0.12
SW Current Limit (typ) (A)	6
Freq (typ) (kHz)	500
Ron (typ) (Ohm)	0.026;0.043
Interface	I2C
Features	Adjustable Current Limit;Enable Input;Internal Compensation;OCP;OVP;SCP
Package Type	UQFN2x2-9(FC)