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LTC3240EDC-3.3#PBF

Description
Charge Pump STPUP/STPDN 3.3V 150mA 6-Pin DFN EP T/R
File Size197KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC3240EDC-3.3#PBF Overview

Charge Pump STPUP/STPDN 3.3V 150mA 6-Pin DFN EP T/R

LTC3240EDC-3.3#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.39.00.01
FunctionStep Up/Step Down
Output TypeFixed
Output Voltage (V)3.3
Minimum Operating Supply Voltage (V)1.8
Maximum Operating Supply Voltage (V)5.5
Output Current (mA)150(Max)
Switching Frequency (kHz)1800
Efficiency (%)87(Typ)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count6
Standard Package NameDFN
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length2
Package Width2
PCB changed6
Lead ShapeNo Lead
LTC3240-3.3/LTC3240-2.5
3.3V/2.5V Step-Up/
Step-Down Charge Pump
DC/DC Converter
FEATURES
DESCRIPTIO
Step-Up/Step-Down Charge Pumps Generate Fixed
3.3V or 2.5V Outputs
V
IN
Range: 1.8V to 5.5V
Output Current up to 150mA
Automatic Mode Switching
Constant Frequency (1.2MHz) Operation in
Step-Up Mode
Low Dropout Regulator Operation in
Step-Down Mode
Low No-Load Quiescent Current: I
Q
= 65µA
Built-In Soft-Start Reduces Inrush Current
Shutdown Disconnects Load from Input
Shutdown Current < 1µA
Short-Circuit/Thermal Protection
Available in a 6-Lead (2mm
×
2mm) DFN Package
The LTC
®
3240-3.3/LTC3240-2.5 are step-up/step-down
charge pump DC/DC converters that produce a fixed
regulated output voltage of 3.3V or 2.5V over a wide input
voltage range (1.8V to 5.5V).
With input voltages greater than the regulated output
voltage the LTC3240 operates as a low dropout regulator.
Once the input voltage drops within 100mV of the regulated
output voltage the part automatically switches to step-up
mode. In step-up mode the LTC3240 operates as a constant
frequency (1.2MHz) doubling charge pump.
The LTC3240-3.3/LTC3240-2.5 feature low no load operat-
ing current (65µA typical) and ultralow operating current
in shutdown (<1µA). Built-in soft-start circuitry prevents
excessive inrush current during start-up. Thermal shut-
down and current-limit circuitry allow the parts to survive
a continuous short-circuit from V
OUT
to GND.
The LTC3240-3.3/LTC3240-2.5 require only three tiny
external ceramic capacitors for an ultrasmall application
footprint. The LTC3240-3.3/LTC3240-2.5 are available in a
6-pin (2mm
×
2mm) DFN package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6411531.
APPLICATIO S
2 AA to 2.5V
2-3 AA/Li-Ion to 3.3V
Low Power Supplies for Cameras, I/O Supplies,
Audio, PC Cards, Misc. Logic, etc., in a Wide Variety
of Handheld Products
TYPICAL APPLICATIO
1µF
Output Voltage vs Input Voltage (Full Range)
Li-Ion to 3.3V at Up to 150mA
3.50
3.45
OUTPUT VOLTAGE (V)
3.40
3.35
3.30
3.25
3.20
3240 TA01a
I
OUT
= 30mA
2.7V TO 4.5V
Li-Ion OR
3-CELL NiMH
1µF
V
IN
C
C
V
OUT
+
3.3V
I
OUT
= 150mA
4.7µF
LTC3240-3.3
GND
OFF ON
SHDN
3.15
3.10
1.7
2.2
2.7
3.2 3.7 4.2 4.7
INPUT VOLTAGE (V)
5.2
5.7
U
3240 TA01b
U
U
3240fb
1

LTC3240EDC-3.3#PBF Related Products

LTC3240EDC-3.3#PBF LTC3240EDC-2.5#TRMPBF LTC3240EDC-2.5#TRPBF LTC3240EDC-3.3#TRMPBF LTC3240EDC-3.3#TRPBF LTC3240EDC-3.3
Description Charge Pump STPUP/STPDN 3.3V 150mA 6-Pin DFN EP T/R Charge Pump STPUP/STPDN 2.5V 150mA 6-Pin DFN EP T/R Charge Pump STPUP/STPDN 2.5V 150mA 6-Pin DFN EP T/R Charge Pump STPUP/STPDN 3.3V 150mA 6-Pin DFN EP T/R Charge Pump STPUP/STPDN 3.3V 150mA 6-Pin DFN EP T/R Charge Pump STPUP/STPDN 3.3V 150mA 6-Pin DFN EP
EU restricts the use of certain hazardous substances Compliant Compliant Compliant Compliant Compliant Not Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Unconfirmed Active Active Active Active Unconfirmed
Function Step Up/Step Down Step Up/Step Down Step Up/Step Down Step Up/Step Down Step Up/Step Down Step Up/Step Down
Output Type Fixed Fixed Fixed Fixed Fixed Fixed
Output Voltage (V) 3.3 2.5 2.5 3.3 3.3 3.3
Minimum Operating Supply Voltage (V) 1.8 1.8 1.8 1.8 1.8 1.8
Maximum Operating Supply Voltage (V) 5.5 5.5 5.5 5.5 5.5 5.5
Output Current (mA) 150(Max) 150(Max) 150(Max) 150(Max) 150(Max) 150(Max)
Switching Frequency (kHz) 1800 1800 1800 1800 1800 1800
Efficiency (%) 87(Typ) 83(Typ) 83(Typ) 87(Typ) 87(Typ) 87(Typ)
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85 85 85 85
Supplier Temperature Grade Extended Extended Extended Extended Extended Extended
Pin Count 6 6 6 6 6 6
Standard Package Name DFN DFN DFN DFN DFN DFN
Supplier Package DFN EP DFN EP DFN EP DFN EP DFN EP DFN EP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max)
Package Length 2 2 2 2 2 2
Package Width 2 2 2 2 2 2
PCB changed 6 6 6 6 6 6
Lead Shape No Lead No Lead No Lead No Lead No Lead No Lead
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 -
Packaging Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel -
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