LT3022 Datasheet PDF - Linear Technology


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LT3022
Linear Technology

Part Number LT3022
Description Very Low Dropout Linear Regulator
Page 20 Pages

LT3022 datasheet pdf
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FEATURES
n VIN Range: 0.9V to 10V
n Dropout Voltage: 145mV Typical
n Output Current: 1A
n Adjustable Output (VREF = VOUT(MIN) = 200mV)
n Fixed Output Voltages: 1.2V, 1.5V, 1.8V
n Stable with Low ESR, Ceramic Output Capacitors
(10µF Minimum)
n 0.05% Typical Load Regulation from 1mA to 1A
n Quiescent Current: 400µA Typical
n 7.5µA Typical Quiescent Current in Shutdown
n Current Limit Protection
n Reverse-Battery Protection with No Reverse Current
n Thermal Limiting with Hysteresis
n 16-Lead (5mm × 3mm) DFN and MSOP Packages
APPLICATIONS
n High Efficiency Linear Regulators
n Battery-Powered Systems
n Logic Supplies
n Post Regulator for Switching Supplies
n Wireless Modems
n FPGA Core Supplies
LT3022/LT3022-1.2
LT3022-1.5/LT3022-1.8
1A, 0.9V to 10V,
Very Low Dropout
Linear Regulator
DESCRIPTION
The LT®3022 is a very low dropout voltage (VLDO™) linear
regulator that operates from single input supplies down to
0.9V. The device supplies 1A output current with 145mV
typical dropout voltage. The LT3022 is ideal for low input
voltage to low output voltage applications, providing
comparable electrical efficiency to a switching regulator.
The regulator optimizes stability and transient response
with low ESR ceramic output capacitors as small as 10µF.
Other LT3022 features include 0.05% typical line regulation
and 0.05% typical load regulation. In shutdown, quiescent
current typically drops to 7.5µA. Internal protection circuitry
includes reverse-battery protection, current limiting, ther-
mal limiting with hysteresis and reverse-current protection.
The LT3022 is available as an adjustable device with
an output voltage range down to the 200mV reference.
Three fixed output voltages, 1.2V, 1.5V and 1.8V are also
offered. The LT3022 regulator is available in the thermally
enhanced low profile (0.75mm) 16-lead (5mm × 3mm)
DFN and MSOP packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. VLDO is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
1.2V to 0.9V, 1A VLDO Regulator
VIN
1.2V
IN OUT
10µF LT3022
698Ω
1%
VOUT
0.9V
10µF 1A
SHDN ADJ
GND
200Ω
1%
3022 TA01a
Minimum Input Voltage
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–50
–25
IL = 1A
0 25 50 75
TEMPERATURE (°C)
100 125
3022 TA01b
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LT3022/LT3022-1.2
LT3022-1.5/LT3022-1.8
ABSOLUTE MAXIMUM RATINGS (Note 1)
IN Pin Voltage......................................................... ±10V
OUT Pin Voltage...................................................... ±10V
Input-to-Output Differential Voltage........................ ±10V
ADJ/SENSE Pin Voltage.......................................... ±10V
SHDN Pin Voltage................................................... ±10V
Output Short-Circuit Duration.......................... Indefinite
Operating Junction Temperature Range
E-, I-Grades (Notes 2, 3).................... –40°C to 125°C
Storage Temperature Range.................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MSOP Package................................................. 300°C
PIN CONFIGURATION
TOP VIEW
NC
NC
OUT
OUT
ADJ
AGND
AGND
NC
1
2
3
4
5
6
7
8
16 NC
15 NC
14 IN
17 13 IN
GND 12 IN
11 PGND
10 PGND
9 SHDN
DHC PACKAGE
16-LEAD (5mm × 3mm) PLASTIC DFN
TJMAX = 125°C, qJA = 38°C/W*, qJC = 4°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
*SEE THE APPLICATIONS INFORMATION SECTION
TOP VIEW
NC 1
16 NC
NC 2
15 NC
OUT 3
14 IN
OUT 4 17 13 IN
ADJ/SENSE* 5 GND 12 IN
AGND 6
11 PGND
AGND 7
10 PGND
NC 8
9 SHDN
MSE PACKAGE
16-LEAD PLASTIC MSOP
TJMAX = 125°C, qJA = 38°C/W**, qJC = 5°C/W TO 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
*PIN 5: ADJ FOR LT3022
SENSE FOR LT3022-1.2/LT3022-1.5/LT3022-1.8
**SEE THE APPLICATIONS INFORMATION SECTION
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LT3022/LT3022-1.2
LT3022-1.5/LT3022-1.8
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3022EDHC#PBF
LT3022IDHC#PBF
LT3022EDHC#TRPBF
LT3022IDHC#TRPBF
3022
3022
16-Lead (5mm × 3mm) Plastic DFN
16-Lead (5mm × 3mm) Plastic DFN
–40°C to 125°C
–40°C to 125°C
LT3022EMSE#PBF
LT3022EMSE#TRPBF
3022
16-Lead Plastic MSOP
–40°C to 125°C
LT3022IMSE#PBF
LT3022IMSE#TRPBF
3022
16-Lead Plastic MSOP
–40°C to 125°C
LT3022EMSE-1.2#PBF LT3022EMSE-1.2#TRPBF 302212
16-Lead Plastic MSOP
–40°C to 125°C
LT3022IMSE-1.2#PBF
LT3022IMSE-1.2#TRPBF 302212
16-Lead Plastic MSOP
–40°C to 125°C
LT3022EMSE-1.5#PBF LT3022EMSE-1.5#TRPBF 302215
16-Lead Plastic MSOP
–40°C to 125°C
LT3022IMSE-1.5#PBF
LT3022IMSE-1.5#TRPBF 302215
16-Lead Plastic MSOP
–40°C to 125°C
LT3022EMSE-1.8#PBF LT3022EMSE-1.8#TRPBF 302218
16-Lead Plastic MSOP
–40°C to 125°C
LT3022IMSE-1.8#PBF
LT3022IMSE-1.8#TRPBF 302218
16-Lead Plastic MSOP
–40°C to 125°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3022EDHC
LT3022EDHC#TR
3022
16-Lead (5mm × 3mm) Plastic DFN
–40°C to 125°C
LT3022IDHC
LT3022IDHC#TR
3022
16-Lead (5mm × 3mm) Plastic DFN
–40°C to 125°C
LT3022EMSE
LT3022EMSE#TR
3022
16-Lead Plastic MSOP
–40°C to 125°C
LT3022IMSE
LT3022IMSE#TR
3022
16-Lead Plastic MSOP
–40°C to 125°C
LT3022EMSE-1.2
LT3022EMSE-1.2#TR
302212
16-Lead Plastic MSOP
–40°C to 125°C
LT3022IMSE-1.2
LT3022IMSE-1.2#TR
302212
16-Lead Plastic MSOP
–40°C to 125°C
LT3022EMSE-1.5
LT3022EMSE-1.5#TR
302215
16-Lead Plastic MSOP
–40°C to 125°C
LT3022IMSE-1.5
LT3022IMSE-1.5#TR
302215
16-Lead Plastic MSOP
–40°C to 125°C
LT3022EMSE-1.8
LT3022EMSE-1.8#TR
302218
16-Lead Plastic MSOP
–40°C to 125°C
LT3022IMSE-1.8
LT3022IMSE-1.8#TR
302218
16-Lead Plastic MSOP
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
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LT3022/LT3022-1.2
LT3022-1.5/LT3022-1.8
E LECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C.
PARAMETER
Minimum Input Voltage (Notes 4, 6)
ADJ Pin Voltage (Notes 5, 6)
Regulated Output Voltage (Note 5)
Line Regulation (Note 7)
Load Regulation (Note 7)
Dropout Voltage (Notes 8, 9)
GND Pin Current, VIN = VOUT(NOMINAL) + 0.4V
(Notes 9, 10)
Output Voltage Noise
ADJ Pin Bias Current (Notes 7, 11)
Shutdown Threshold
SHDN Pin Current (Note 12)
Quiescent Current in Shutdown
CONDITIONS
MIN
ILOAD = 1A, TA > 0°C
ILOAD = 1A, TA ≤ 0°C
VIN = 1.5V, ILOAD = 1mA
1.15V < VIN < 10V, 1mA < ILOAD < 1A
196
l 194
LT3022-1.2 VIN = 1.5V, ILOAD = 1mA
1.176
1.5V < VIN < 10V, 1mA < ILOAD <1A l 1.164
LT3022-1.5 VIN = 1.8V, ILOAD = 1mA
1.470
1.8V < VIN < 10V, 1mA < ILOAD <1A l 1.455
LT3022-1.8 VIN = 2.1V, ILOAD = 1mA
1.764
2.1V < VIN < 10V, 1mA < ILOAD <1A l 1.746
LT3022 ∆VIN = 1.15V to 10V, ILOAD = 1mA
LLTT33002222--11..25 ∆∆VVIINN
=
=
1.5V
1.8V
to
to
10V,
10V,
IILLOOAADD
=
=
1mA
1mA
LT3022-1.8 ∆VIN = 2.1V to 10V, ILOAD = 1mA
l –1.5
l –9
l –11
l –13.5
LT3022 VIN = 1.15V, ∆ILOAD = 1mA to 1A
–0.5
l –1.0
LT3022-1.2 VIN = 1.5V, ∆ILOAD = 1mA to 1A
–3
l –6
LT3022-1.5 VIN = 1.8V, ∆ILOAD = 1mA to 1A
–3.8
l –7.5
LT3022-1.8 VIN = 2.1V, ∆ILOAD = 1mA to 1A
–4.5
l –9
ILOAD = 10mA
l
ILOAD = 100mA
l
ILOAD = 500mA
l
ILOAD = 1A
l
ILOAD = 0mA
ILOAD = 1mA
ILOAD = 100mA
IILLOOAADD
=
=
500mA
1A
VCOOUUTT
=
=
10µF,
1.2V
ILOAD
=
1A,
BW
=
10Hz
to
100kHz,
VADJ = 0.2V, VIN = 1.5V
VOUT = Off to On
VOUT = On to Off
VVSSHHDDNN
=
=
01V0,VV, VININ==101V0V
VIN = 6V, VSHDN = 0V
l
l
l
l
l
l 0.25
l
l
TYP
0.9
0.9
200
200
1.200
1.200
1.500
1.500
1.800
1.800
–0.1
0.6
0.8
1
0.1
0.6
1
1.2
45
55
110
145
400
1.2
3.4
8.3
18
165
30
0.64
0.64
3
7.5
MAX
1.05
1.10
204
206
1.224
1.236
1.530
1.545
1.836
1.854
0.5
3.5
4
5
0.5
1.0
3
6
3.8
7.5
4.5
9
75
135
90
175
150
235
185
285
3.5
8.5
20
36
100
0.9
±1
9.5
15
UNITS
V
V
mV
mV
V
V
V
V
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
µA
mA
mA
mA
mA
µVRMS
nA
V
V
µA
µA
µA
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