LP6203 Datasheet, PDF (1/8 Pages) Lowpower Semiconductor inc – High Efficiency Boost DC/DC Regulator

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.
Ordering Information
LP6203 - □ □ □
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
Vout
+
10uF
10uH
SS24
+
Cout
47uF
1K
4
VDD
SOE ¹
22pF
1uF
LP6203QVF
0.01
R1
1.5M
3
N/A
5
FB
22pF
R2
500K
F: Pb-Free
Package Type
QV: TDFN-6
Applications
— AlK. Battery products
Pin Configurations
Marking Information
Please see website.
TDFN-6(Top View)
LP6203 –01 Ver. 1.1 Datasheet FEB.-2009
Page 1 of 8