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LTC3025EDC-1#TRMPBF

Description
LDO Regulator Pos 0.4V to 3.6V 0.5A 6-Pin DFN EP T/R
File Size237KB,14 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LTC3025EDC-1#TRMPBF Overview

LDO Regulator Pos 0.4V to 3.6V 0.5A 6-Pin DFN EP T/R

LTC3025EDC-1#TRMPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeLDO
Number of Outputs1
PolarityPositive
Accuracy (%)±2
Output TypeAdjustable
Output Voltage (V)0.4 to 3.6
Maximum Output Current (A)0.5(Typ)
Minimum Input Voltage (V)0.9
Maximum Input Voltage (V)5.5
Maximum Dropout Voltage @ Current (V)0.12@500mA
Reference Voltage (V)0.4
Line Regulation0.07mV(Typ)
Load Regulation-0.35mV(Typ)
Junction to Ambient102°C/W
Junction to Case20°C/W
Special FeaturesCurrent Limit|Short Circuit Protection|Shutdown|Thermal Protection
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
Supplier Temperature GradeExtended
PackagingTape and Reel
Supplier PackageDFN EP
Pin Count6
Standard Package NameDFN
MountingSurface Mount
Package Height0.75(Max)
Package Length2
Package Width2
PCB changed6
Lead ShapeNo Lead
LTC3025-1/LTC3025-2/
LTC3025-3/LTC3025-4
500mA Micropower
VLDO Linear Regulators
FeaTures
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DescripTion
The LTC
®
3025-X is a micropower, VLDO™ (very low drop-
out) linear regulator which operates from input voltages as
low as 0.9V. The device is capable of supplying 500mA of
output current with a typical dropout voltage of only 85mV.
A BIAS supply is required to run the internal reference and
LDO circuitry while output current comes directly from the
IN supply for high efficiency regulation. The LTC3025-1
features an adjustable output with a low 0.4V reference
while the LTC3025-2, LTC3025-3, and LTC3025-4 have
fixed 1.2V, 1.5V and 1.8V output voltages respectively.
The LTC3025-X’s low quiescent current makes it an ideal
choice for use in battery-powered systems. For 3-cell NiMH
and single cell Li-Ion applications, the BIAS voltage can
be supplied directly from the battery while the input can
come from a high efficiency buck regulator, providing a
high efficiency, low noise output.
Other features include high output voltage accuracy,
excellent transient response, stability with ultralow ESR
ceramic capacitors as small as 1µF short-circuit and
,
thermal overload protection and output current limiting.
The LTC3025-X is available in a tiny, low profile (0.75mm)
6-lead DFN (2mm × 2mm) package.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and VLDO
and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents including 7224204, 7218082.
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Wide Input Voltage Range: 0.9V to 5.5V
Stable with Ceramic Capacitors
Very Low Dropout: 85mV at 500mA
Adjustable Output Range: 0.4V to 3.6V (LTC3025-1)
Fixed Output: 1.2V (LTC3025-2), 1.5V (LTC3025-3),
1.8V (LTC3025-4)
±2% Voltage Accuracy over Temperature,
Supply and Load
Low Noise: 80µV
RMS
(10Hz to 100kHz)
BIAS Voltage Range: 2.5V to 5.5V
Fast Transient Recovery
Shutdown Disconnects Load from V
IN
and V
BIAS
Low Operating Current: I
IN
= 4µA, I
BIAS
= 50µA Typ
Low Shutdown Current: I
IN
= 1µA, I
BIAS
= 0.01µA Typ
Output Current Limit
Thermal Overload Protection
Available in 6-Lead (2mm × 2mm) DFN Package
applicaTions
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Low Power Handheld Devices
Low Voltage Logic Supplies
DSP Power Supplies
Cellular Phones
Portable Electronic Equipment
Handheld Medical Instruments
Post Regulator for Switching Supply Noise Rejection
Typical applicaTion
1.2V Output Voltage from 1.5V Input Supply
BIAS
Li-Ion
OR
3-CELL
NiMH
1.5V HIGH
EFFICIENCY 1.5V
DC/DC
BUCK
0.1µF
IN
0.1µF
OFF ON
SHDN
GND
30251234 TA01
1MHz V
IN
Supply Rejection
50
45
V
OUT
= 1.2V
I
OUT
≤ 500mA
REJECTION (dB)
C
OUT
= 10µF
C
OUT
= 1µF
OUT
1µF
40
35
30
25
20
15
10
5 BIAS = 3.6V
V
OUT
= 1.2V
0
1.2 1.4 1.6
I
OUT
= 100mA
I
OUT
= 300mA
1.8 2.0
V
IN
(V)
2.2
2.4
2.6
LTC3025-2
SENSE
30251234 TA01b
30251234ff
1
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