SMD Type
IC
PFM Step-up DC/DC Converter With
High Efficiency And Low Noise
KX8530
Outline
Features
The KX8530 series are CMOS-based PFM step-up
DC-DC Converter. The converter can start up by
supply voltage as low as 0.8V, and capable of
delivering maximum 200mA output current at 3.3V
output with 1.8V input Voltage. Quiescent current
drawn from power source is as low as 7uA. All of
these features make KX8530 series be suitable for
the portable devices, which are supplied by a single
battery to four-cell batteries.
Deliver 200mA at 3.3V Output voltage with 1.8V
input Voltage
Low start-up voltage (when the output current is
1mA)----------------------------------------------0.8V
The converter output voltage can be adjusted
from 2.5V 6.0V(In 0.1V step).
Output voltage accuracy ---------------------- 2%
Low temperature-drift coefficient of the output
voltage----------------------------------- 100ppm/
Only three external components are necessary:
An inductor, a Schottky diode and an output filter
capacitor
To reduce the noise caused by the switch
regulator, KX8530 is well considerated in circuit
design and manufacture. So that the interferer to
other circuits by the device is reduced greatly.
KX8530 integrates stable reference circuits and
trimming technology, so it can afford high precision
and low temperature-drift coefficient of the output
voltage.
High power conversion efficiency-------------85%
Low quiescent current drawn from power
source----------------------------------------- 7ìA
Applications
KX8530 is available in SOT-89 SOT-23 and
SOT-153 packages which is PB free. And in 5-pin
packages, such as SOT-153, the device can be
switch on or off easily by CE pin, to minimize the
standby supply current.
Power source for PDA DSC MP3
Player electronic toy and wireless mouse
Power source for a single or dual-cell
battery-powered equipments
Power source for LED
PIN Configuration
1
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