Switching Regulators. S-8363 Datasheet
© ABLIC Inc., 2010
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz
PWM / PFM SWITCHABLE SWITCHING REGULATOR
The S-8363 Series is a CMOS step-up switching regulator which consists of a reference voltage source, an oscillation
circuit, an error amplifier, a phase compensation circuit, a current limit circuit, and a start-up circuit.
Due to the operation of the PWM / PFM switching control, pulses are skipped under the light load operation and the
S-8363 Series prevents decrease in efficiency caused by IC’s operating current.
The S-8363 Series is capable of start-up from 0.9 V (IOUT = 1 mA) by the start-up circuit, and is suitable for applications
which use one dry cell.
The output voltage is freely settable from 1.8 V to 5.0 V by external parts.
Ceramic capacitors can be used for output capacitor. Small packages SNT-6A and SOT-23-6 enable high-density
Low operation voltage
Input voltage range
Soft start function
Low current consumption
Current limit circuit
Nch power MOS FET ON resistance
Lead-free, Sn 100%, halogen-free*1
: Start-up from 0.9 V (IOUT = 1 mA) guaranteed
: 1.2 MHz
: 0.9 V to 4.5 V
: 300 mA (VIN = 1.8 V, VOUT = 3.3 V)
: 0.6 V2.5%
: 1.2 ms typ.
: During switching-off, 95 A typ.
: PWM / PFM switching control
: Current consumption during power-off 3.0 A max.
: limits the peak value of inductor current
: 0.25 typ.
: Operation with fixed duty pulse under the VOUT voltage of 1.4 V or less
*1. Refer to “ Product Name Structure” for details.
MP3 players, digital audio players
Digital cameras, GPS, wireless transceiver
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
L = 2.2 H
Circuit VOUT CFB