Preliminary Datasheet
LP3110
High Performance Regulated Charge Pump
General Description
The LP3110 is a high performance charge pump
DC/DC converter that produces a regulated 5V output.
No external inductor is required for operation. The
operating voltage range is 2.6V to Vout. Internal
soft-start circuitry effectively reduces the in-rush
current both while start-up and mode change.
The LP3110 features very low quiescent current, over
current protection and short circuit protection.
The LP3110 is available in SOT-23-6 package.
Features
2X Mode for Ultra-High Efficiency
2.8V to Vout Range Input Voltage
Soft Start Function
Built-In Short-Circuit Protection
1.2MHz Fixed frequency
Built-in Thermal Protection
Over Current Protection Function
I
Q
<1uA in Shutdown
SOT23-6 Package
RoHS Compliant and 100% Lead (Pb)-Free
Order Information
LP3110 -
□ □
□
F: Pb-Free
Typical Application Circuit
6
C+
5
2.2uF
3
Chip Enable
C-
Package Type
B6: SOT23-6
Vin
Vin
4
1uF
Vout_5V
OUT
1
2.2uF
EN
LP3110
GND
2
Applications
LCD Panel
Cellular and Smart mobile phone
PDA/DSC
Marking Information
Please see website.
Flash LED Driver
LP3110 – Ver. 1.1 Datasheet
Feb.-2008
Page 1 of 9
Preliminary Datasheet
Functional Pin Description
P a c k a g e Ty p e
Pin Configurations
LP3110
SOT23-6
PIN
1
2
3
4
5
6
NAME
VOUT
GND
EN
CN
VIN
CP
DESCRIPTION
Output Voltage
Ground
Chip Enable (Active High)
Flying Capacitor Negative Terminal
Power Input Voltage
Flying Capacitor Positive Terminal
Function Block Diagram
Absolute Maximum Ratings
Input Voltage to GND (V
IN)
------------------------------------------------------------------------------------ 6V
EN to GND Voltage (V
en
) --------------------------------------------------------------------- 0.3V to V
in
+0.3V
Maximum DC Output Current(Iout) ----------------------------------------------------------------------- 150mA
Operating Junction Temperature Range (T
J
) ---------------------------------------------------- 40
℃
to 150
℃
Maximum Soldering Temperature (at leads, 1 0sec) ----------------------------------------------------- 260
℃
LP3110 – Ver. 1.1 Datasheet
Feb.-2008
Page 2 of 9
Preliminary Datasheet
Electrical Characteristics
LP3110
(Over recommended operating conditions unless specified otherwise) V
IN
=3.6V,EN=High, T
A
=25
℃
)
Symbol
V
IN
V
OUT
I
Q
I
SHDN
F
OSC
I
SC
V
EN(L)
V
EN(H)
I
EN
Parameter
Input Voltage
Output Voltage Range
Quiescent Current
Shutdown Current
Oscillator Frequency
Output short Circuit Current Limit Vout<0.5V
Enable Threshold Low
Enable Threshold High
Input Low Current
No Load
EN = GND
Conditions
LP3110
Min.
Typ.
2.8
5
150
1
0.8
250
1.4
Max.
Vout
450
5
1.4
400
0.4
Unit
V
V
µA
µA
MHz
mA
V
V
1.2
350
V
IN
= V
EN
= 5.5V
-1
1
µA
LP3110 – Ver. 1.1 Datasheet
Feb.-2008
Page 3 of 9
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