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LT3028IFE#PBF

Description
LDO Regulator Pos 1.22V to 20V1.22V to 20V 0.1A/0.5A Automotive 16-Pin TSSOP EP Tube
File Size325KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LT3028IFE#PBF Overview

LDO Regulator Pos 1.22V to 20V1.22V to 20V 0.1A/0.5A Automotive 16-Pin TSSOP EP Tube

LT3028IFE#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeLDO
Number of Outputs2
PolarityPositive
Output TypeAdjustable
Output Voltage (V)1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20|1.22 to 20
Maximum Output Current (A)0.5|0.1
Minimum Input Voltage (V)1.8
Maximum Input Voltage (V)20
Maximum Dropout Voltage @ Current (V)0.35@100mA|0.31@50mA|0.22@10mA|0.15@1mA|0.37@500mA|0.28@100mA|0.22@50mA|0.19@10mA
Reference Voltage (V)1.22
Line Regulation10mV
Load Regulation12mV
Junction to Ambient38°C/W
Junction to Case8°C/W
Special FeaturesShutdown|Over Temperature Protection|Over Current Protection
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
Supplier Temperature GradeExtended Industrial
PackagingTube
Supplier PackageTSSOP EP
Pin Count16
Standard Package NameSOP
MountingSurface Mount
Package Height0.95(Max)
Package Length5.1(Max)
Package Width4.5(Max)
PCB changed16
Lead ShapeGull-wing
LT3028
Dual 100mA/500mA
Low Dropout, Low Noise,
Micropower Regulators with
Independent Inputs
FEATURES
DESCRIPTIO
Low Noise: 20µV
RMS
(10Hz to 100kHz)
Low Quiescent Current: 30µA/Output
Independent Inputs
Wide Input Voltage Range: 1.8V to 20V
Output Current: 100mA/500mA
Very Low Shutdown Current: <0.1
µ
A
Low Dropout Voltage: 300mV/320mV at
100mA/500mA
Adjustable Outputs from 1.22V to 20V
Stable with as Low as 1µF/3.3µF Output Capacitor
Stable with Aluminum, Tantalum or
Ceramic Capacitors
Reverse-Battery Protected
No Protection Diodes Needed
Overcurrent and Overtemperature Protected
Tracking/Sequencing Capability
Thermally Enhanced 16-Lead TSSOP and 16-Lead
(5mm
×
3mm) DFN Packages
APPLICATIO S
Cellular Phones
Pagers
Battery-Powered Systems
Frequency Synthesizers
Wireless Modems
Tracking/Sequencing Power Supplies
The LT
®
3028 is a dual, micropower, low noise, low drop-
out regulator with independent inputs. With an external
0.01µF bypass capacitor, output noise is a low 20µV
RMS
over a 10Hz to 100kHz bandwidth. Designed for use in
battery-powered systems, the low 30µA quiescent current
per output makes it an ideal choice. In shutdown, quies-
cent current drops to less than 0.1µA. Shutdown control
is independent for each output, allowing for flexibility in
power management. The device is capable of operating
over an input voltage range of 1.8V to 20V. Output 1 can
supply 500mA of output current with a dropout voltage of
320mV. The device can supply 100mA of output current
from Output 2 with a dropout voltage of 300mV. Quiescent
current is well controlled in dropout.
The LT3028 regulator is stable with output capacitors as
low as 1µF for the 100mA output and 3.3µF for the 500mA
output. Small ceramic capacitors can be used without the
series resistance required by other regulators.
Internal protection circuitry includes reverse-battery pro-
tection, current limiting and thermal limiting protection.
The device is available as an adjustable device with a 1.22V
reference voltage. The LT3028 regulator is available in the
thermally enhanced 16-lead TSSOP and 16-lead, low
profile (5mm
×
3mm
×
0.75mm) DFN packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Protected by U.S. Patents including 6118263, 6144250.
TYPICAL APPLICATIO
V
IN1
3.7V TO
20V
IN1
1µF
SHDN1
BYP1
ADJ1
LT3028
IN2
1µF
SHDN2
GND
OUT2
OUT1
3.3V/2.5V Low Noise Regulators
0.01µF
422k
10µF
3.3V AT 500mA
20µV
RMS
NOISE
10Hz to 100kHz Output Noise
249k
2.5V AT 100mA
20µV
RMS
NOISE
V
OUT
100µV/DIV
V
IN2
2.9V TO
20V
0.01µF
BYP2
ADJ2
261k
10µF
249k
3028 TA01a
U
20µV
RMS
3028 TA01b
U
U
3028f
1
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