Switching Regulators. S-8363 Datasheet

S-8363 Regulators. Datasheet pdf. Equivalent

Part S-8363
Description Switching Regulators
Feature S-8363 Series www.ablicinc.com © ABLIC Inc., 2010 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM / PFM .
Manufacture ABLIC
Datasheet
Download S-8363 Datasheet

S-8363 Series www.ablicinc.com © ABLIC Inc., 2010 STEP-UP, S-8363 Datasheet
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S-8363
S-8363 Series
www.ablicinc.com
© ABLIC Inc., 2010
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz
PWM / PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02
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
mounting.
Features
Low operation voltage
Oscillation frequency
Input voltage range
Output current
Reference voltage
Efficiency
Soft start function
Low current consumption
Duty ratio
Power-off function
Current limit circuit
Nch power MOS FET ON resistance
Start-up function
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%
: 85%
: 1.2 ms typ.
: During switching-off, 95 A typ.
: PWM / PFM switching control
max.88%
: 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.
Applications
MP3 players, digital audio players
Digital cameras, GPS, wireless transceiver
Portable devices
Packages
SNT-6A
SOT-23-6
1



S-8363
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series
Rev.2.0_02
Block Diagram
ON/OFF
VIN
VIN CIN
L = 2.2 H
SD
VIN
ON/OFF
Circuit
Start-up
Circuit
CONT
Oscillation
Circuit
VOUT
SLOPE
Compensation
Internal
Power Supply
Current
Limit Circuit
MUX
Switching
Control
Circuit
STU Mode
Circuit VOUT CFB
Error Amplifier
FB

PWM
Reference
Comparator Voltage
Source
VSS
VOUT
RFB1
COUT
10 F
RFB2
Figure 1
2





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