04S_09XC6382 02.09.12 14:53 ページ 487
Series
PFM Controlled, Step‐Up DC/DC Converters (Duty Ratio 75%)
ꢀDuty 75%
■Applications
ꢁCellular phones, pagers
ꢀCMOS Low Power Consumption
ꢁPalmtops
ꢀOperating Voltage
: 0.9V~10.0V
: 2.0V~7.0V
ꢁCameras, video recorders
ꢁPortable equipment
ꢀOutput Voltage Range
ꢀOutput Voltage Accuracy: 2.5%
4
■General Description
The XC6382 series is a group of PFM controlled step-up DC/DC
converters.
■Features
Operating (start-up) voltage range
: 0.9V~10V
The XC6382 series employs CMOS process and laser trimming
technologies so as to attain low power and high accuracy.
Max. oscillator frequency is trimmed to 100kHz (accuracy: 1ꢀ5%
Every built-in switching transistor type enables a step-up circuit to be
configured using only three external components ; a coil, a diode, and a
capacitor.
Output voltage range : 2.0V~7.0V in 0.1V increments
Highly accurate
Maximum oscillator frequency
: 100kHz ( 1ꢀ5%
: 7ꢀ5( ꢀ5%
: Set-up voltage 2.ꢀ5
Duty ratio
Both switching transistor built-in and external types are
available.
External transistor versions are available to accommodate high output
current applications.
Five-lead packaged units offer either Chip Enable or
independent VOUT pin option.
Both built-in and external transistor types include ꢀ-pin and 3-pin
packages, which are provided with either a CE (chip enable% function that
reduces power consumption during shut-down mode, or a VDD pin
function (separating power and voltage detect pins%.
Small package
: SOT-23, 2ꢀ mini-mold (3-pin, ꢀ-pin%
SOT-89, 89-ꢀ mini-power mold
(3-pin, ꢀ-pin%
SOT-23, SOT-2ꢀ and SOT-89-ꢀ super mini-mold packages.
■Typical Application Circuit
■Typical Performance
Characteristic
2
1
L
XC6382A301
L=100μH,C=47μF(Tantalum)�
100
(TOP VIEW)�
SOT-23
VIN
CIN
80
3
V
IN=1.8V
VOUT
60
40
20
0
0.9V
SD
1.2V
1.5V
CL�
(Tantalum)�
GND
0
20
40
60
80
100
Output Current:IOUT(mA)�
487