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LTC3563EDC#TRMPBF

Description
Conv DC-DC 2.5V to 5.5V Synchronous Step Down Single-Out 1.28V/1.87V 0.5A 6-Pin DFN EP T/R
File Size223KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC3563EDC#TRMPBF Overview

Conv DC-DC 2.5V to 5.5V Synchronous Step Down Single-Out 1.28V/1.87V 0.5A 6-Pin DFN EP T/R

LTC3563EDC#TRMPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeSynchronous Step Down
Output TypeSelectable
Switching Frequency (kHz)2700
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)1.28|1.87
Maximum Output Current (A)0.5
Minimum Input Voltage (V)2.5
Maximum Input Voltage (V)5.5
Operating Supply Voltage (V)2.5 to 5.5
Typical Quiescent Current (uA)26
Line Regulation0.2%/V
Load Regulation0.2%
Efficiency (%)96
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
FEATURES
LTC3563
500mA, Synchronous
Step-Down DC/DC Converter
with Selectable Output Voltage
DESCRIPTIO
The LTC
®
3563 is a high efficiency monolithic synchro-
nous buck converter using a constant frequency, current
mode architecture. A voltage select input allows the user
to program the output voltage to 1.28V or 1.87V. Supply
current during operation is only 26µA, dropping to <1µA in
shutdown. The 2.5V to 5.5V input voltage range makes the
LTC3563 ideally suited for single Li-Ion battery-powered
applications. 100% duty cycle provides low dropout opera-
tion, extending battery life in portable systems. Internal
power switches are optimized to provide high efficiency
and eliminate the need for an external Schottky diode.
The switching frequency is internally set at 2.25MHz,
allowing the use of small surface mount inductors and
capacitors. The LTC3563 is specifically designed to work
well with ceramic output capacitors, achieving very low
output voltage ripple and a small PCB footprint.
The LTC3563 is configured for the power saving Burst
Mode Operation.
, LTC, LT, LTM and Burst Mode are registered trademarks of Linear Technology
Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466,
6611131, 5994885.
High Efficiency: Up to 96%
Pin Selectable Output Voltage: 1.28V/1.87V
Low Ripple (<20mV
P-P
) Burst Mode
®
Operation:
I
Q
= 26µA
Very Low Quiescent Current: Only 26µA
2.5V to 5.5V Input Voltage Range
2.25MHz Constant Frequency Operation
Low Dropout Operation: 100% Duty Cycle
No Schottky Diode Required
Internal Soft-Start Limits Inrush Current
Shutdown Mode Draws <1µA Supply Current
±2% Output Voltage Accuracy
Current Mode Operation for Excellent Line and Load
Transient Response
Overtemperature Protected
Available in 2mm
×
2mm 6-Lead DFN
APPLICATIO S
Cellular Telephones
Wireless and DSL Modems
Digital Cameras
MP3 Players
PDAs and Other Handheld Devices
TYPICAL APPLICATIO
Efficiency and Power Loss vs Output Current
100
90
V
IN
2.7V TO 5.5V
2.2µH
C
IN
10µF
CER
V
IN
SW
LTC3563
RUN
V
SEL
GND
V
OUT
C
OUT
10µF
CER
3563 TA01a
EFFICIENCY (%)
V
OUT
1.28V/1.87V
500mA
80
70
60
50
40
30
20
10
0
0.1
V
IN
= 3.6V
V
OUT
= 1.87V
1
10
100
OUTPUT CURRENT (mA)
1.28V 1.87V
U
U
U
1000
100
POWER LOSS (mW)
10
1
0.1
1000
3563 TA01b
3563f
1

LTC3563EDC#TRMPBF Related Products

LTC3563EDC#TRMPBF LTC3563EDC#PBF LTC3563EDC#TRPBF
Description Conv DC-DC 2.5V to 5.5V Synchronous Step Down Single-Out 1.28V/1.87V 0.5A 6-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Single-Out 1.28V/1.87V 0.5A 6-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Single-Out 1.28V/1.87V 0.5A 6-Pin DFN EP T/R
EU restricts the use of certain hazardous substances Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99
Part Status Active Unconfirmed Active
Type Synchronous Step Down Synchronous Step Down Synchronous Step Down
Output Type Selectable Selectable Selectable
Switching Frequency (kHz) 2700 2700 2700
Switching Regulator Yes Yes Yes
Number of Outputs 1 1 1
Output Voltage (V) 1.28|1.87 1.28|1.87 1.28|1.87
Maximum Output Current (A) 0.5 0.5 0.5
Minimum Input Voltage (V) 2.5 2.5 2.5
Maximum Input Voltage (V) 5.5 5.5 5.5
Operating Supply Voltage (V) 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5
Typical Quiescent Current (uA) 26 26 26
Line Regulation 0.2%/V 0.2%/V 0.2%/V
Load Regulation 0.2% 0.2% 0.2%
Efficiency (%) 96 96 96
Minimum Operating Temperature (°C) -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85
Supplier Temperature Grade Extended Extended Extended
Packaging Tape and Reel Tape and Reel Tape and Reel
Pin Count 6 6 6
Standard Package Name DFN DFN DFN
Supplier Package DFN EP DFN EP DFN EP
Mounting Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max) 0.75(Max)
Package Length 2 2 2
Package Width 2 2 2
PCB changed 6 6 6
Lead Shape No Lead No Lead No Lead
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