Preliminary Datasheet
LP6203
High Efficiency Boost DC/DC Regulator
General Description
The LP6203 is a compact, high efficiency, and low
voltage step-up DC/DC converter including an
error
amplifier,
ramp
generator,
comparator,
switch pass element and driver in which providing
a stable and high efficient operation over a wide
range of load currents. It operates in stable
waveforms without external compensation.
The low start-up input voltage below 1.6V makes
LP6203 suitable for 2 to 4 battery cells applications
of providing up to 1A output current. The high
switching rate minimized the size of external
components. Besides, the 19µA low quiescent
current together with high efficiency maintains
long battery lifetime.
The output voltage is set with two external
resistors.
Features
1.6V Start-up Input Voltage
Output up to 20V
High Supply Capability to Deliver 6V 500mA
with 2 Alkaline Cell
19µA Quiescent (Switch-off) Supply Current
Zero Shutdown Mode Supply Current
90% Efficiency
Up to 450KHz Switching Frequency
Using Internal Power Switches
Small DFN2*2-6 Package
Typical Application Circuit
Vin
10uH
+
10uF
1K
4
1uF
3
VDD
6
Cout
47uF
SOE
1
22pF
0.01
5
R2
500K
R1
1.5M
SS24
+
Vout
Ordering Information
LP6203 -
□ □
□
LP6203QVF
GND
2
SW
N/A
FB
22pF
F: Pb-Free
Package Type
QV: TDFN-6
Pin Configurations
Applications
AlK. Battery products
Marking Information
Please see website.
TDFN-6(Top View)
LP6203 –01
Ver. 1.1 Datasheet
FEB.-2009
Page 1 of 8
POWER [ LOWPOWER SEMICONDUCTOR INC ]
