XC6375 Datasheet, PDF (1/4 Pages) Torex Semiconductor – PWM Controlled, Step down DC/DC Converters

XC6375 Series
PWM Controlled, Step down DC/DC Converters
HP010199
x CMOS Low Power Consumption
x Operating Voltage: 2.2V~10.0V
x Output Voltage Range: 2.0V~7.0V
x Output Voltage Accuracy: ±2.5%
x Oscillator Frequency: 100kHz
s Aplications
q Cellular phones, pagers
q Palmtops
q Cameras, video recorders
q Portable equipment
s General Description
The XC6375 series are PWM controlled step down DC/DC converters.
The XC6375 series is produced by CMOS process and laser trimming
technologies to attain low-power and high-accuracy.
Built-in phase compensation and slow start-up circuits ensure excellent
transient response and improved electrical characteristics.
Output voltage can be determined from 2.0V to 7.0V in 0.1V
increments (accuracy: ±2.5%) by means of laser trimming technology.
The internal oscillator is trimmed to a fixed frequency of 100kHz
(accuracy; ±15%). The duty ratio varies up to 100% according to loads.
A step-down convert can be easily configured with only a switching
element (a transistor), a coil, a diode, and a capacitor. The products
are available in small SOT-89-5 packages.
s Features
Operating (start-up) voltage range: 2.2V~10V
Output voltage range: 2.0V~7.0V in 0.1V increments
Highly accurate: Set-up voltage ±2.5%
Oscillator frequency: 100kHz (15%)
Maximum output current: 500mA (MIN.) at VIN=5.0V, VOUT=3.0V
High efficiency: Typ.88% at VIN=3.6V, VOUT=3.0V, IOUT=100mA*
Built-in phase compensation and slow start-up circuits.
Small package: SOT-89-5 (5-pin) mini-power mold
gNOTE: Performance depends on external
components, PCB layout, etc.
s Pin Configuration
5
4
12 3
SOT-89-5
(TOP VIEW)
s Pin Assignment
PIN NUMBER PIN NAME
1
NC
2
VDD
3
VOUT
4
EXT
5
VSS
FUNCTION
No Connection
IC Internal power supply
Output voltage monitor
External switch transistor drive
Ground
s Block Diagram
VDD
VDD
Buffer
Slow Start
Vref
PWM Control
OSC 100kHz
PWM comp
EXT
e-67
s Absolute Maximum Ratings
Ta=25:
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VOUT
12
V
VOUT
EXT pin Voltage
VEXT
–0.3~VOUT+0.3
V
EXT pin Current
IEXT
±50
mA
Continuous total Power Dissipation Pd
500
mW
Operating Ambient Temperature Topr
–30~+80
:
Storage Temperature
Tstg
–40~+125
:
230