LT3022/LT3022-1.2
LT3022-1.5/LT3022-1.8
1A, 0.9V to 10V,
Very Low Dropout
Linear Regulator
FEATURES DESCRIPTION
n
V Range: 0.9V to 10V
The LT 3022 is a very low dropout voltage (VLDO) linear
IN
n
Dropout Voltage: 145mV Typical
regulator that operates from single input supplies down to
n
Output Current: 1A
0.9V. The device supplies 1A output current with 145mV
n
Adjustable Output (V = V = 200mV)
typical dropout voltage. The LT3022 is ideal for low input
REF OUT(MIN)
n
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
voltage to low output voltage applications, providing
n
Stable with Low ESR, Ceramic Output Capacitors
comparable electrical efficiency to a switching regulator.
(10F Minimum)
The regulator optimizes stability and transient response
n
0.05% Typical Load Regulation from 1mA to 1A
with low ESR ceramic output capacitors as small as 10F.
n
Quiescent Current: 400A Typical
Other LT3022 features include 0.05% typical line regulation
n
7.5A Typical Quiescent Current in Shutdown
and 0.05% typical load regulation. In shutdown, quiescent
n
Current Limit Protection
current typically drops to 7.5A. Internal protection circuitry
n
Reverse-Battery Protection with No Reverse Current
includes reverse-battery protection, current limiting, ther-
n
Thermal Limiting with Hysteresis
mal limiting with hysteresis and reverse-current protection.
n
16-Lead (5mm 3mm) DFN and MSOP Packages
The LT3022 is available as an adjustable device with
an output voltage range down to the 200mV reference.
APPLICATIONS
Three fixed output voltages, 1.2V, 1.5V and 1.8V are also
n
High Efficiency Linear Regulators
offered. The LT3022 regulator is available in the thermally
n
Battery-Powered Systems
enhanced low profile (0.75mm) 16-lead (5mm 3mm)
n
Logic Supplies
DFN and MSOP packages.
n
Post Regulator for Switching Supplies
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
n Technology Corporation. VLDO is a trademark of Linear Technology Corporation.
Wireless Modems
All other trademarks are the property of their respective owners.
n
FPGA Core Supplies
TYPICAL APPLICATION
Minimum Input Voltage
1.1
I = 1A
L
1.0
1.2V to 0.9V, 1A VLDO Regulator
0.9
0.8
V
OUT
V
IN
0.9V
IN OUT
0.7
1.2V
1A
698
10F 10F
LT3022
0.6
1%
SHDN ADJ
0.5
200
GND
0.4
1%
0.3
3022 TA01a
0.2
0.1
0
50 0 25 50 75 100 125
25
TEMPERATURE (C)
3022 TA01b
3022fb
1
MINIMUM INPUT VOLTAGE (V)LT3022/LT3022-1.2
LT3022-1.5/LT3022-1.8
ABSOLUTE MAXIMUM RATINGS (Note 1)
IN Pin Voltage ........................................................ 10V Operating Junction Temperature Range
OUT Pin Voltage ..................................................... 10V E-, I-Grades (Notes 2, 3) ................... 40C to 125C
Input-to-Output Differential Voltage ....................... 10V Storage Temperature Range ................. 65C to 150C
ADJ/SENSE Pin Voltage ......................................... 10V Lead Temperature (Soldering, 10 sec)
SHDN Pin Voltage .................................................. 10V MSOP Package ................................................ 300C
Output Short-Circuit Duration ......................... Indenfi ite
PIN CONFIGURATION
TOP VIEW
1 16 NC
NC TOP VIEW
1 16 NC
2 15 NC NC
NC
NC 2 15 NC
3 14 IN
OUT 3 14 IN
OUT
OUT 4 17 13 IN
4 13 IN
OUT
17 5 12 IN
ADJ/SENSE* GND
GND AGND 6 11 PGND
5 12 IN
ADJ
7 10 PGND
AGND
AGND 6 11 PGND NC 8 9 SHDN
AGND 7 10 PGND MSE PACKAGE
16-LEAD PLASTIC MSOP
NC 8 9 SHDN
T = 125C, q = 38C/W**, q = 5C/W TO 10C/W
JMAX JA JC
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
DHC PACKAGE
*PIN 5: ADJ FOR LT3022
16-LEAD (5mm 3mm) PLASTIC DFN
SENSE FOR LT3022-1.2/LT3022-1.5/LT3022-1.8
**SEE THE APPLICATIONS INFORMATION SECTION
T = 125C, q = 38C/W*, q = 4C/W
JMAX JA JC
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
*SEE THE APPLICATIONS INFORMATION SECTION
3022fb
2