Linear Low Dropout (LDO) Regulator Solutions

VOL 2
Linear Low Dropout (LDO)
Regulator Solutions
High Performance Analog ICs
L I N E A R L D O R E G U L AT O R S O L U T I O N S
Introduction
We offer a broad line of high performance low dropout (LDO) linear regulators with fast
transient response, excellent line and load regulation, and very wide input voltage range
from 0.9V to 100V. Output currents range from 20mA to 10A, with positive, negative and
multiple output versions available. Many devices offer output voltage operation <0.8V and
some feature operation as low as 0V, even with a single supply. Most are stable with ceramic
output capacitors. Our PNP-based linear regulators offer reverse-input, reverse-output, and
reverse-current protection. Our LDO+™ devices include monitoring of voltage, current,
temperature and diagnostic flags that indicate fault conditions. LDO regulators can be
applied in virtually any application. For the most current product information, please visit
www.linear.com.
Contents
Single Output LDO Regulators
Positive
High Voltage PNP.............................................................................................................................1
PNP..................................................................................................................................................2-3
Micropower PNP..............................................................................................................................4
NPN (2nd Generation).......................................................................................................................6-7
NPN (1st Generation)........................................................................................................................8
Very Low Dropout (VLDO).................................................................................................................9
NMOS for Digital ICs.........................................................................................................................10
Radiation Hardened (RH)..................................................................................................................13
Negative
NPN..................................................................................................................................................11
Radiation Hardened (RH)..................................................................................................................13
Dual Output LDO Regulators
Positive.....................................................................................................................................................5
Positive/Negative......................................................................................................................................11
LDO Controllers
Positive.....................................................................................................................................................12
Current Sources
Current Sources.......................................................................................................................................7
L I N E A R L D O R E G U L AT O R S O L U T I O N S
High Voltage PNP Positive Linear Regulators
PNP family features:
LT3011
Actual Size
Demo Board
• Rugged and Hard to Kill
• Up to 80VIN Continuous Operation
LT3013
Actual Size
Demo Board
• Low Output Voltage Noise
• Extensive Reverse Protection for Harsh Environments in
Automotive, Avionics and Industrial Applications
LT®3011: 50mA, 3V to 80V Low Dropout Micropower Linear
Regulator with PWRGD
Dropout Voltage
350
VIN
3V TO
80V
1µF
1.6M
LT3011
SHDN
GND
750k
300
1µF
ADJ
PWRGD
POWER GOOD
VOUT
5V
50mA
OUT
DROPOUT VOLTAGE (mV)
IN
249k
CT
250
200
150
100
1000pF
50
0
LT3013: 250mA, 4V to 80V Low Dropout Micropower
Linear Regulator with PWRGD
10
0
20
30
40
OUTPUT CURRENT (mA)
50
Dropout Voltage
400
1µF
OUT
LT3013
1.6M
SHDN
PWRGD
GND
750k
350
DROPOUT VOLTAGE (mV)
IN
VIN
5.4V TO
80V
VOUT
5V
250mA
3.3µF
ADJ
249k
CT
1000pF
300
250
200
150
100
50
0
50
0
100
150
200
250
OUTPUT CURRENT (mA)
Part
Number
Output
Current (A)
Min VIN
(V)
Max VIN
(V)
Reference
Voltage
(V)
Dropout
Voltage
(V@IOUT)
Typ IQ
(Supply)
(μA)
Output
Voltage (V)
Noise (µVRMS)
or % of VOUT
Temperature
Grade
Package
High Voltage PNP Positive Linear Regulators
LT3014
0.02
3.0
80
1.22
0.35
7
Adj (1.22 to 60)
115
EI
TSOT-5, 3x3 DFN-8
LT3014HV
0.02
3.0
100
1.22
0.35
7
Adj (1.22 to 60)
115
EI
TSOT-5, 3x3 DFN-8
LT3014B
0.02
3.0
80
1.22
0.35
7
Adj (1.22 to 60)
115
EI
TSOT-5, 3x3 DFN-8
LT3014BHV
0.02
3.0
100
1.22
0.35
7
Adj (1.22 to 60)
115
EI
TSOT-5, 3x3 DFN-8
LT3010
0.05
3.0
80
1.275
0.30
30
Adj (1.275 to 60), 5
100
E H MP
MSOP-8E
LT3011*†
0.05
3.0
80
1.24
0.30
45
Adj (1.24 to 60)
100
EIH
MSOP-12E, 3x3 DFN-10
LT3012
0.25
4.0
80
1.24
0.40
40
Adj (1.24 to 60)
100
EH
TSSOP-16E, 3x4 DFN-12
LT3012B
0.25
4.0
80
1.24
0.40
40
Adj (1.24 to 60)
100
E
TSSOP-16E, 3x4 DFN-12
LT3013*†
0.25
4.0
80
1.24
0.40
65
Adj (1.24 to 60)
100
E H MP
TSSOP-16E, 3x4 DFN-12
LT3013B*†
0.25
4.0
80
1.24
0.40
65
Adj (1.24 to 60)
100
E
TSSOP-16E, 3x4 DFN-12
* Power Good † LDO+
1
L I N E A R L D O R E G U L AT O R S O L U T I O N S
PNP Positive Linear Regulators
LT3086
Actual Size
Demo Board
PNP family features:
• Low Output Voltage Noise
• Wide Voltage Range
• Low Dropout Voltage
LT3055
Actual Size
Demo Board
• Fast Transient Response and Extensive Reverse Protection
• Precision Current Limits
LT3086: 1.5A Rail-to-Rail, Low Dropout PNP Linear Regulator with
Monitoring and Cable Drop Compensation
RMON
357Ω
1%
SET
TEMP
TRACK
IMON
ILIM
CDC
RPWRGD
RCDC
1%
82.5k 10µF
1%
100k
RCDC 1%
PWRGD
GND
VLOAD
5V AT
2.1A
OUTPUT VOLTAGE (V)
SHDN
RSET
90.9k + 1.1k
1%
5.6
VPWRGD
LT3055: 500mA Linear Regulator with Precision Current Limit
and Diagnostics
5.0
VLOAD WITH CDC
4.8
4.6
VLOAD WITHOUT CDC
I LOAD = 0.5A TO 1.5A
2
1
0
08
0 160 240 320 400 480 560 640 720 800
TIME (µs)
External Current Limit RIMAX = 604Ω
550
LT3055
VOUT WITH CDC
5.2
VIN = 6V
RMON = 357
RWIRE = 0.24
RCDC = 46.4k
4.2
RLINE2
*SEE APPLICATIONS INFORMATION
FOR INDUCTANCE EFFECTS ASSOCIATED
WITH RWIRE
5.4
4.4
LOAD
CURRENT (A)
TO ADC
0.8V AT 2.24A
FULL-SCALE
LT3086
10µF
VTEMP
10mV/°C
25°C = 250mV
OUT
5.8
CABLE
RLINE1
CURRENT LIMIT FAULT THRESHOLD (mA)
VIN
6V TO
15V
IN
VOUT
Transient Response with Cable Drop
Compensation (CDC)
LOAD
2
540
VOUT(NOMINAL) = 5V
530
520
510
500
490
VIN = 7V
VIN = 5.6V
480
470
460
450
–75 –50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
L I N E A R L D O R E G U L AT O R S O L U T I O N S
Part Number
Output
Current
(A)
Min VIN
(V)
Max VIN
(V)
Reference
Voltage
(V)
Dropout
Voltage
(V@IOUT)
Typ IQ
(Supply)
(μA)
Output
Voltage
(V)
Noise
(µVRMS) or
% of VOUT
Temperature
Grade
Package
PNP Positive Linear Regulators
LT1761
0.1
1.8
20
1.22
0.30
20
Adj (1.22 to 19.5),
1.2, 1.5, 1.8, 2, 2.5,
2.8, 3, 3.3, 5
20
E I MP
TSOT-5
LT3050§
0.1
1.6
45
0.60
0.34
45
Adj (0.6 to 44.5),
3.3, 5
30
E I MP
2x3 DFN-12, MSOP-12E
LT3060
0.1
1.6
45
0.60
0.30
40
Adj (0.6 to 44.5), 1.2,
1.5, 1.8, 2.5, 3.3,
5, 15
30
E I H MP
2x2 DFN-8, TSOT-8
LT3061#
0.1
1.6
45
0.60
0.25
45
Adj (0.6 to 19)
30
E I H MP
2x3 DFN-8, MSOP-8E
LT1020
0.125
4.5
36
2.50
0.40
40
Adj
–
CI
SO-16, DIP-14
LT1120/A
0.125
4.5
36
2.50
0.40
40
Adj
–
CI
SO-8, DIP-8
LT1121/A/HV
0.15
4.2
30/36
3.75
0.42
30
Adj (3.75 to 29/35),
3.3, 5
–
CI
SOT-223, SO-8, TO-92, DIP-8
LT1762
0.15
1.8
20
1.22
0.27
25
Adj (1.22 to 19.5),
2.5, 3, 3.3, 5
20
E
MSOP-8
LT3062
0.2
1.6
45
0.60
0.30
45
Adj (0.6 to 40)
30
E I H MP
2x3 DFN-8, MSOP-8E
LT3063#
0.2
1.6
45
0.60
0.30
45
Adj (0.6 to 19)
30
E I H MP
2x3 DFN-8, MSOP-8E
LT1521
0.3
4.3
20
3.75
0.50
12
Adj (3.75 to 19),
3, 3.3, 5
–
CI
SOT-223, SO-8, MSOP-8
LT1579
0.3
2.7
20
1.50
0.40
50
Adj (1.5 to 19),
3, 3.3, 5
–
C
SO-8, SO-16, SSOP-16
LT1962
0.3
1.8
20
1.22
0.27
30
Adj (1.22 to 19.5),
1.5, 1.8, 2.5, 3, 3.3, 5
20
E
MSOP-8
LT1763
0.5
1.8
20
1.22
0.30
30
Adj (1.22 to 19.5),
1.5, 1.8, 2.5, 3, 3.3, 5
20
C I MP
3x4 DFN-12, SO-8,
LT3055‡§
0.5
2.0
45
0.60
0.35
65
Adj (0.6 to 44.5)
25
E I H MP
3x4 DFN-16, MSOP-16E
LT3065‡§
0.5
2.0
45
0.60
0.30
55
Adj (0.6 to 44.5)
25
E I H MP
3x3 DFN-10, MSOP-12E
LT1129
0.7
4.2
30
3.75
0.40
50
Adj (3.75 to 29),
3.3, 5
–
E I MP
DD-Pak, SOT-223, SO-8,
TO-220, TSSOP-20
LT1965
1.1
1.8
20
1.20
0.31
500
Adj (1.2 to 19.5),
1.5, 1.8, 2.5, 3.3
40
EIH
3x3 DFN-8, MSOP-8E, DD-Pak,
TO-220
LT1963/A*
1.5
2.1
20
1.21
0.34
1mA
Adj (1.21 to 19.5),
1.5, 1.8, 2.5, 3.3
40
E I MP
TSSOP-16E, DD-Pak, TO-220,
SOT-223, SO-8
LT3081†§
1.5
1.2
36
50µA
1.21
1.1mA
Adj (0 to 34.5)
27
E I H MP
4x4 DFN-12, TSSOP-16E,
TO-220, DD-Pak
LT3086 ‡§
2.1
1.4
40
400mV/50µA
0.33
1.2mA
Adj (0.4 to 32)†
40
E I MP
TSSOP-16E, 4x5 DFN-16,
DD-Pak, TO-220
LT1528
3.0
3.9
15
3.30
0.60
400
Adj (3.3 to 14), 3.3
–
C
DD-Pak, TO-220
LT1529
3.0
3.9
15
3.75
0.60
50
Adj (3.75 to 14),
3.3, 5
–
CI
DD-Pak, TO-220
LT1764/A*
3.0
2.7
20
1.21
0.34
1mA
Adj (1.21 to 19.5),
1.5, 1.8, 2.5, 3.3
40
E MP
DD-Pak, TO-220, TSSOP-16E
*“A” Versions are stable with ceramic capacitors † Single-Resistor VOUT Set ‡ Power Good # Active Discharge § LDO+
3
L I N E A R L D O R E G U L AT O R S O L U T I O N S
Micropower PNP Positive Linear Regulators
Micropower PNP family features:
LT3008
Actual Size
Demo Board
• Sub-5µA Quiescent Current
• Good Output Noise Performance
• Keep Alive, Real-Time Clock and Remote Monitoring Applications
LT3007: 3µA IQ, 20mA, 45V Low Dropout Fault Tolerant Linear Regulator
Dropout Voltage/Quiescent Current
500
450
2.2µF
LT3007-3.3
DROPOUT VOLTAGE (mV)
1µF
SENSE
SHDN
DROPOUT
VOLTAGE
GND
5
350
4
300
250
3
IQ
200
2
150
100
QUIESCENT CURRENT (µA)
OUT
IN
VIN
3.8V TO
45V
6
ILOAD = 20mA
400
VOUT
3.3V
20mA
1
50
0
-50 -25 0
0
25 50 75 100125150
TEMPERATURE (°C)
LT3009: 3µA IQ, 20mA Low Dropout Linear Regulator
Dropout Voltage/Quiescent Current
500
450
1µF
LT3009-3.3
1µF
4.5
4.0
SHDN
GND
350
DROPOUT
VOLTAGE
300
IQ
250
3.5
3.0
2.5
200
2.0
150
1.5
100
1.0
50
0.5
0
-50 -25 0
QUIESCENT CURRENT (µA)
OUT
IN
VIN
3.75V TO
20V
5.0
ILOAD = 20mA
400
VOUT
3.3V
20mA
DROPOUT VOLTAGE (mV)
4
0
25 50 75 100125150
TEMPERATURE (°C)
Part
Number
Output
Current (A)
Min VIN
(V)
Max VIN
(V)
Reference
Voltage
(V)
Dropout
Voltage
(V@IOUT)
Typ IQ
(Supply)
(μA)
Output
Voltage
(V)
Noise
(µVRMS)
or % of VOUT
Temperature
Grade
Package
Micropower PNP Positive Linear Regulators
LT3009
0.02
1.6
20
0.60
0.28
3
Adj (0.6 to 19.5), 1.2,
1.5, 1.8, 2.5, 3.3, 5
150
EI
SC70-8, 2x2 DFN-6
LT3007*
0.02
2.0
45
0.60
0.30
3
Adj (0.6 to 44.5), 1.2,
1.5, 1.8, 2.5, 3.3, 5
92
EI
TSOT-8
LT3008
0.02
2.0
45
0.60
0.30
3
Adj (0.6 to 44.5), 1.2,
1.5, 1.8, 2.5, 3.3, 5
92
E I MP
TSOT-8, 2x2 DFN-6
*FMEA Fault Tolerant version
L I N E A R L D O R E G U L AT O R S O L U T I O N S
Dual Output PNP Linear Regulators
LT3030
Actual Size
Demo Board
Dual linear regulator family features:
• Highly Compact Solution
• All the Performance Features of our Single PNP Regulators
LT3032
Actual Size
Demo Board
• Ideal for Core/Logic Combinations
LT3030: Dual 750mA/250mA Low Dropout, Low Noise
Micropower Linear Regulator
IN1
3.3µF
OUT1
1M
10nF
LT3030
IN2
SHDN1
BYP1
SHDN2
ADJ1
10µF
500
VOUT1
1.8V
750mA
400
113k
1%
237k
1%
1M
PWRGD1
PWRGD2
OUT2
10nF
3.3µF
54.9k
1%
BYP2
VOUT2
1.5V
250mA
5.4V TO
20V
<0.25V = OFF
>2V = ON
SHDNP
Part
Number
Output
Current
(A)
0
75 150 225 300 375 450 525 600 675 750
OUTPUT CURRENT (mA)
0.01µF
10µF
0.01µF
10µF
–5V OUT AT –150mA
30µVRMS NOISE
OUTP
100µV/DIV
20µVRMS
OUTN
100µV/DIV
30µVRMS
GND
10µF
Min VIN
(V)
OUT1
150
10Hz to 100kHz Output Noise
BYPN
INN
200
BYPP
SHDNN
–5.4V TO
–20V
OUT2
250
0
5V OUT AT 150mA
20µVRMS NOISE
OUTP
LT3032-5
10µF
300
50
237k
1%
LT3032: Dual 150mA Positive/Negative Low Noise Regulator
INP
350
100
ADJ2
GND
TJ = 25°C
450
DROPOUT VOLTAGE (mV)
VIN
2.5V
Dropout Voltage vs Load Current
OUTN
Max VIN
(V)
1mS/DIV
Reference
Voltage
(V)
Dropout
Voltage
(V@IOUT)
Typ IQ
(Supply)
(μA)
Output
Voltage
(V)
Noise (µVRMS)
or % of VOUT
Temperature
Grade
Package
Dual Output Positive Linear Regulators
LT3023
0.1/0.1
1.8
20
1.22
0.30
40
Adj (1.22 to 20)
20
EI
MSOP-10E, 3x3 DFN-10
LT3027
0.1/0.1
1.8
20
1.22
0.30
50
Adj (1.22 to 20)
20
EI
MSOP-10E, 3x3 DFN-10
LT3024
0.1/0.5
1.8
20
1.22
0.30
60
Adj (1.22 to 20)
20
EI
TSSOP-16E, 3x4 DFN-12
LT3028
0.1/0.5
1.8
20
1.22
0.30
60
Adj (1.22 to 20)
20
EI
TSSOP-16E, 3x5 DFN-16
LT3029
0.5/0.5
1.8
20
1.215
0.30
110
Adj (1.215 to 19.5)
20
E I H MP
MSOP-16E, 3x4 DFN-16
LT3030*
0.75/0.25
1.7
20
1.22
0.30
195
Adj (1.22 to 19.5)
20
E I H MP
4x5 QFN-28, TSSOP-20E
60
Adj, ±3.3, ±5, ±12, ±15
20 / 30
E I MP
3x4 DFN-14
Dual Output Positive and Negative Linear Regulators
LT3032
* Power Good
±0.15
±1.8
±20
±1.22
0.30/-0.34
5
L I N E A R L D O R E G U L AT O R S O L U T I O N S
Single Resistor Set, Current Reference-Based NPN/PNP Positive Linear Regulators
Second generation NPN family features:
LT3081
Actual Size
Demo Board
• Operation Down to 0V Output
• Direct Paralleling to Spread PCB Heat
• Low Noise and Simplicity with a Single Resistor VOUT Set Capability
• Always Operates in Unity-Gain
LT3083
Actual Size
Demo Board
—— Bandwidth Independent of Output Voltage
—— Output Noise Independent of Output Voltage
—— Load Regulation Independent of Output Voltage
LT3081: Wide Safe Operating Area (SOA)
LT3081: 1.5A Single Resistor Rugged Linear Regulator with Monitors
3.0
VIN
ILOAD/5000
2.5
IN
LT3081
1µA/°C
Older Regulator
2.0
50µA
+
–
IMON
TEMP
SET
1k
1k
30.1k
IOUT
1.5V
1.5A
OUT
ILIM
10µF*
300Ω*
Current Limit (A)
6
LT3081
1.5
Increased
Safe Area
1.0
0.5
6.04k
Older Regulator
*OPTIONAL
0
0
5
10 15 20 25 30 35 40
Input-to-Output Differential Voltage (V)
LT3083: Adjustable 3A Single Resistor Low Dropout Regulator
V CONTROL
3.3V
4.7µF
V CONTROL
V IN
1.5V
IN
10µF
LT3083
OUT
10µF
SET
R SET
18.2k
1%
0.1µF
* R MIN
909 Ω
V OUT = 0.9V
I MAX = 3A
*OPTIONAL FOR
MINIMUM 1mA LOAD
REQUIREMENT
LT3080 Actual Size Demo Board
L I N E A R L D O R E G U L AT O R S O L U T I O N S
Part
Number
Output
Current
(A)
Min VIN
(V)
Max VIN
(V)
Reference
Current
(µA)
Dropout
Voltage
(V@IOUT)
Typ IQ
(Supply)
(μA)
Output
Voltage
(V)
Noise
(µVRMS)
w/ CSET
Temperature
Grade
Package
0V Output Capable, Single-Resistor Set, Current Reference-Based NPN Positive Linear Regulators
LT3082 §
0.2
1.2
40
10
1.30
500μA
Adj (0 to 38.5)
33
E I MP
3x3 DFN-8, TSOT-23-8, SOT-223
LT3085
0.5
1.2
36
10
0.275‡
1mA
Adj (0 to 35.7)
33
E I MP
2x3 DFN-6, MSOP-8E
LT3080
1.1
1.2
36
10
0.35‡
(1.35, SOT-223)
1mA
Adj (0 to 35.7)
40
EI
3x3 DFN-8, MSOP-8E, SOT-223,
TO-220, DD-Pak
LT3080-1*
1.1
1.2
36
10
0.35‡
1mA
Adj (0 to 35.7)
40
EI
3x3 DFN-8, MSOP-8E
LT3081# ¤
1.5
1.2
36
50
1.23
1.1mA
Adj (0 to 34.5)
40
EI
4x4 DFN-12, TSSOP-16E, TO-220,
DD-Pak
LT3086# § ¤
2.1
1.4
40
50
0.33
1.2mA
Adj (0.4 to 32)
40
E I MP
4x5 DFN-16, TSSOP-16E, TO-220,
DDPak
LT3083
3
1.2
8/18†
50
0.31‡
1mA
Adj (0 to 7.5 or 0 to 17.5†)
40
E I MP
4x4 DFN-12, TSSOP-16E, TO-220,
DD-Pak
* Integrated Ballast Resistor † DD-Pak and TO-220 Packages ‡ Dual-Supply Operation #Power Good § PNP pass transistor ¤ LDO+
Part
Number
Output Current
Range (mA)
Initial
Accuracy
(%)
Min VIN
(V)
Max VIN
(V)
Current
Regulation
(ppm/V)
Quiescent
Current
(µA)
Reverse
Voltage
Protection
Reverse
Current
Protection
Current
Limiting
Thermal
Protection
Temperature
Grade
Package
Current Sources
LM334
1µA to 10mA
3
0.8
40
200
280
—
yes
—
—
C
T0-92, SO-8
LT3092
0.5 to 200
1
1.2
40
<10
300
yes
yes
yes
yes
E I MP
TSOT-8, SOT-223,
3x3 DFN-8
7
L I N E A R L D O R E G U L AT O R S O L U T I O N S
NPN Positive Linear Regulators
First generation NPN positive linear regulator family:
• Based on Classic 3-Terminal Architecture
• Wide Input Voltage
• Wide Output Voltage
LT®1584/5A/7: Low Dropout Fast Response Positive Regulator
Adjustable & Fixed
Dropout Voltage vs Output Current
1.5
VIN ≥ 4.75V
+
LT1584-3.3
LT1585-3.3
LT1587-3.3
C1
10µF
1.4
+
3.3V
7A, 4.6A, 3A
INPUT/OUTPUT DIFFERENTIAL (V)
8
C2*
SOLID
TANTALUM
* REQUIRED FOR STABILITY
LT1584: C2 = 22µF,
LT1585/LT1587: C2 = 10µF
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0
I FULL LOAD
OUTPUT CURRENT (A)
Part
Number
Output
Current (A)
Min VIN
(V)
Max VIN
(V)
Reference
Voltage
(V)
Dropout
Voltage
(V@IOUT)
Typ IQ
(Supply)
(mA)
Output Voltage
(V)
Noise
(µVRMS)
or % of VOUT
Temperature
Grade
Package
NPN Positive Linear Regulators
LT1117
0.8
2.5
15
1.25
1.20
5
Adj, 2.85, 3.3, 5
0.003%
CI
DD-Pak, SOT-223
LT1118
–0.4/0.8
3.0
15
1.225
1.00
0.6
Adj, 2.5, 2.85, 5
–
C
SO-8, SOT-223
LT1086
1.5
2.6
25
1.25
1.30
5
Adj, 2.85, 3.3, 3.6, 5, 12
0.003%
CI
DD-Pak, TO-220
LT1085
3
2.6
30
1.25
1.30
5
Adj, 3.3, 3.6, 5, 12
0.003%
CI
DD-Pak, TO-220, TO-3P
LT1587
3
2.7
7
1.25
1.20
8
Adj, 1.5, 3.3, 3.38, 3.45, 3.6
0.003%
C
DD-Pak, TO-220
LT1585
4.6
2.4
7
1.25
1.10
8
Adj, 1.5, 3.3, 3.38, 3.45, 3.6
0.003%
C
DD-Pak, TO-220
LT1585A
5
2.5
7
1.25
1.20
8
Adj, 1.5, 3.3
0.003%
C
DD-Pak, TO-220
LT1084
5
2.6
30
1.25
1.30
5
Adj, 3.3, 3.6, 5, 12
0.003%
CI
DD-Pak, TO-220, TO-3P
LT1584
7
2.5
7
1.25
1.25
8
Adj, 3.3, 3.38, 3.45, 3.6
0.003%
CI
DD-Pak, TO-220
LT1580
7
1.8*
6
1.25
0.54‡
10
Adj, 2.5
–
CI
DD-Pak, TO-220
LT1083
7.5
2.6
30
1.25
1.30
5
Adj, 3.3, 3.6, 5, 12
0.003%
C
DD-Pak, TO-220
LT1581
10
1.7*
6
1.25
0.43‡
10
Adj, 2.5
–
C
TO-220
* Dual-Supply Operation
L I N E A R L D O R E G U L AT O R S O L U T I O N S
Very Low Dropout (VLDO) Positive Linear Regulators
LT3022
Actual Size
Demo Board
VLDO™ regulator family features:
LTC3025-x
Actual Size
Demo Board
• Input Voltage Operation Down to 0.9V
• Output Voltage Down to 0.2V
• Typical Dropout Performance ≤ 150mV
Enabling low VIN-to-VOUT Differential Applications
Minimum Input Voltage
1.1
LT3022: 1A, 0.9V to 10V, Very Low Dropout Linear Regulator
IN
10µF
OUT
SHDN
VOUT
0.9V
1A
10µF
698
1%
LT3022
0.9
MINIMUM INPUT VOLTAGE (V)
VIN
1.2V
ADJ
200
1%
GND
I L = 1A
1.0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–50
LTC®3025-x: 500mA Positive Low Noise LDO Regulator
–25
0
50
25
75
TEMPERATURE (°C)
100
125
1MHz VIN Supply Rejection
50
BIAS
1.5V HIGH
EFFICIENCY
DC/DC
BUCK
0.1µF
1µF
LTC3025-2
1.5V
IN
SENSE
SHDN
GND
COUT = 10µF
40
35
0.1µF
OFF ON
45
VOUT = 1.2V
IOUT ≤ 500mA
REJECTION (dB)
Li-Ion
OR
3-CELL
NiMH
OUT
COUT = 1µF
30
25
20
15
10
5 BIAS = 3.6V
VOUT = 1.2V
0
1.6
1.2 1.4
Part
Number
Output
Current (A)
Min VIN
(V)
Max VIN
(V)
Reference
Voltage
(V)
Dropout
Voltage
(V@IOUT)
Typ IQ
(Supply)
(μA)
Output
Voltage
(V)
IOUT = 100mA
IOUT = 300mA
1.8 2.0
VIN (V)
2.2
2.4
Noise (µVRMS)
or % of VOUT
Temperature
Grade
Package
2.6
VLDO Positive Linear Regulators
LT3020
0.1
0.9
10
0.20
0.15
120
Adj (0.2 to 9.5),
1.2, 1.5, 1.8
245
EI
MSOP-8, 3x3 DFN-8
LTC1844
0.15
1.6
6.5
1.25
0.11
35
Adj (1.25 to 6), 1.5,
1.8, 2.5, 2.8, 3.3
60
E
TSOT-5
LTC3025
0.3
0.9
5.5
0.40
0.045
54
Adj (0.4 to 3.6)
80
E
2x2 DFN-6
LTC3035
0.3
1.7
5.5
0.40
0.05
100
Adj (0.4 to 3.6)
150
E
2x3 DFN-8
LT3021
0.5
0.9
10
0.20
0.16
120
Adj (0.2 to 9.5),
1.2, 1.5, 1.8
300
EI
5x5 DFN-16, SO-8
LTC3025-x
0.5
0.9
5.50
0.40
0.08
54
Adj (0.4 to 3.6),
1.2, 1.5, 1.8
80
EI
2x2 DFN-6
LT3022
1.0
0.95
10
0.20
0.15
400
Adj (0.2 to 9.5),
1.2, 1.5, 1.8
165
EI
3x5 DFN-16, TSSOP-16E
LTC3026‡
1.5
1.14
3.5/5.5
0.40
0.10
400#
Adj (0.4 to 2.6)
110* or 210†
EI
3x3 DFN-10, MSOP-10E
* Boost Disabled †
Boost Enabled ‡ LDO+ # VIN = 3.5V
9
L I N E A R L D O R E G U L AT O R S O L U T I O N S
NMOS Positive Linear Regulators for Digital IC Power
LT3070
Actual Size
Demo Board
Our family of NMOS positive linear regulators has the
performance demanded by modern high current, low voltage
digital ICs:
• Ultrafast Transient Response
• Very Low Dropout Voltage
• High Output Current
• Low Output Voltage
• Good Power Supply Rejection Ratio (PSRR)
• VIOC—Control of Upstream Buck Regulator for VIN to VOUT
Regulation across LT3070/71
LT3070: 5A, Low Noise, Programmable Output, 85mV Dropout
Linear Regulator
Dropout Voltage
50k
VBIAS
2.2V TO 3.6V
150
PWRGD
VIN
1.2V
330µF
120
BIAS
IN
PWRGD
EN
SENSE
VO0
VOUT
0.9V
5A
OUT
2.2µF*
LT3070
VO1
4.7µF*
10µF*
VO2
*X5R OR X7R CAPACITORS
MARGSEL
MARGTOL
GND
1nF
90
VOUT = 1.8V
VBIAS = 3.3V
60
VOUT = 0.8V
VBIAS = 2.5V
30
REF/BYP
VIOC
0.01µF
0
LT3071: 5A, Low Noise, Programmable Output, 85mV Dropout Linear
Regulator with Analog Margining
1
0
3
2
OUTPUT CURRENT (A)
4
5
Transient Load Response
50k
VBIAS
2.2V TO 3.6V
PWRGD
2.2µF
VIN
1.2V
BIAS
IN
330µF
PWRGD
EN
SENSE
VO0
VO1
OUT
2.2µF*
LT3071
VO2
NC
Output
Current (A)
4.7µF*
*X5R OR X7R CAPACITORS
MARGA
VIOC
IMON
REF/BYP
GND
1nF
Part
Number
VIN = VOUT(NOMINAL)
2.2µF
DROPOUT VOLTAGE (mV)
10
Min VIN
(V)
0.01µF
VOUT
0.9V
10µF* 5A
VOUT
50mV/DIV
AC-COUPLED
IOUT
2A/DIV
I = 500mA
TO 5A
VMON
2V AT 5A
FULL SCALE
1k
VOUT = 1V
20µs/DIV
COUT = 10µF + 4.7µF + 2.2µF
IOUT tRISE/tFALL = 100ns
Max VIN
(V)
Reference
Voltage
(V)
Dropout
Voltage
(V@IOUT)
Typ IQ
(Supply) (μA)
Output
Voltage
(V)
Noise
(µVRMS)
or % of VOUT
Temperature
Grade
Package
NMOS Positive Linear Regulators
LT3070*‡#
5
0.95
3
0.6
0.09
1.1mA
Adj (0.8 to 1.8)
25
E I MP
4x5 QFN-28
LT3071†‡
5
0.95
3
0.6
0.09
1.1mA
Adj (0.8 to 1.8)
25
E I MP
4x5 QFN-28
LT3072‡§
2.5/2.5
0.9
4
0.6
0.085
1.5/1.5mA
Adj (0.6 to 3.3)
20
E I MP
4x7 QFN-36, TSSOP-38E
* Digital Margining †
Analog Output Margining ‡ LDO+ #Power Good § Future product, contact factory for information.
L I N E A R L D O R E G U L AT O R S O L U T I O N S
Negative Linear Regulators
LT3090
Actual Size
Demo Board
Rugged and hard to kill negative linear regulator family features:
• Low Output Voltage Noise
• Wide Voltage Range
• Low Dropout Voltage
• Reverse Output Protection
LT3090: 36V, 600mA Negative Linear Regulator with Programmable
Current Limit
Output Noise: 10Hz to 100kHz
TO ADC (IMON)
0.1µF
LT3090
49.9k
4.7µF
3.32k
SET
GND
IMONP
VOUT
–2.5V
MAX IOUT
600mA
OUT
+
VOUT
100µV/DIV
1ms/DIV
VIN: –3.5V
VOUT: –2V
COUT: 4.7µF, CSET: 0.1µF
IL: 600mA
–
4.7µF
50µA
IMONN
IN
VIN
–3V TO
–10V
3.3V
ILIM
SHDN
0.1µF
10k
Dropout Voltage
0.45
T J = 25°C
0.40
LT3015: 1.5A, Low Noise, Negative LDO Regulator with Precision Current Limit
GND
LT3015
10µF
SHDN
3.48k
1%
10µF
ADJ
10.5k
1%
VIN
–5.5V TO
–30V
IN
DROPOUT VOLTAGE (V)
0.35
0.20
0.15
0.10
0.05
VOUT
–5V
–1.5A
OUT
0.30
0.25
0
0
–250
–500
–750 –1000 –1250 –1500
LOAD CURRENT (mA)
Part
Number
Output
Current
(A)
Min VIN
(V)
Max VIN
(V)
Reference
Voltage
(V)
Dropout
Voltage
(V@IOUT)
Typ IQ
(Supply)
(μA)
Output
Voltage
(V)
Noise
(µVRMS)
or % of VOUT
Temperature
Grade
Package
Negative Linear Regulators
LT1964
0.2
–1.9
–20
–1.22
0.34
30
Adj, –5
30
EI
TSOT-5, 3x3 DFN-8
LT1175
0.5
–4.3
–20
–3.8
0.50
45
Adj, –5
134
C I MP
SOT-223, SO-8, DIP-8, DD-Pak, TO-220
LT3090*
0.6
–1.5
–36
50µA
0.30
1mA
Adj (0 to –32)
18
E I H MP
3x3 DFN-12, MSOP-12E
LT3015
1.5
–1.8
–30
–1.22
0.31
1.1mA
Adj (–1.22 to –30)
60
E I MP
DD-Pak, TO-220, MSOP-12E, 3x3 DFN-8
LT1185
3.0
–4.3
–35
–2.37
0.67
2.5mA
Adj (–2.37 to –30)
49
CI
DD-Pak, TO-220
55
Adj, ±3.3, ±5,
±12, ±15
20 / 30
E I MP
3x4 DFN-14
Dual Output Positive and Negative Linear Regulators
LT3032
* LDO+
±0.15
±1.9
±20
±1.22
0.30/-0.34
11
12
L I N E A R L D O R E G U L AT O R S O L U T I O N S
Linear Regulator Controllers
LT3150
Actual Size
Demo Board
Linear regulator controller family features:
• An Off-Board Power Device
• Reduced On-Chip Power Dissipation
• Spreads Heat More Evenly on a PC Board
Transient Response for 0.1A to
4A Output Load Step
LT3150: Fast Transient Response, Low Input Voltage, LDO Controller
MBR0520L
+
C1
4.7µF
6.19k
1%
1.37k
1%
L1
10µH
LT3150
VIN2
FB1
SHDN2
SWGND
GND
GND
SW
VIN1
SHDN1
IPOS
INEG
GATE
FB2
COMP
50µV/DIV
+
5.1
Si4410
243
1%
1.5k
6800pF
50pF
CIN: PANASONIC SP SERIES EEFUE0E221R 20%
C1: AVX TAJA475M020R 20V 20%
L1: MURATA LQH32CN100K11 OR SUMIDA CDRH3D16100
VIN
1.8V
CIN
220µF
2.5V
x2
2.2µF x10
X5R CERAMIC
0805 CASE
1020
1%
20μS/DIV
Transient Response for 0.2A to
5A Output Load Step
LT1573: Low Dropout Regulator Controller
CC
100pF
FB
CTIME
RC
1k
COMP
LATCH
2A/DIV
VOUT
1.5V
4A
VOUT
50µV/DIV
LT1573
+
SHDN
GND
VIN
RD
24
DRIVE
RB
50
VIN
5V
CIN
100F
TANT
COUT1
1F
CER
X 24
+
QOUT
MOTOROLA
D45H11
+
COUT2
220F
TANT
VOUT
3.3V
R1
1.6k
R2
1k
2.5A/DIV
LOAD
10μS/DIV
GND
VOUT = 1.265V (1 + R1/R2)
FOR T < 45C, COUT1 = 24 x 1F Y5V CERAMIC SURFACE MOUNT CAPACITORS.
FOR T > 45C, COUT1 = 24 x 1F X7R CERAMIC SURFACE MOUNT CAPACITORS.
PLACE COUT1 IN THE MICROPROCESSOR SOCKET CAVITY
Part
Number
Output
Current (A)
Min VIN
(V)
Max VIN
(V)
Reference
Voltage
(V)
Dropout
Voltage
(V@IOUT)
Typ IQ
(Supply) (μA)
Output
Voltage
(V)
Noise (µVRMS)
or % of VOUT
Temperature
Grade
Package
Discrete Pass Element Drivers and Regulators—Very Low Dropout
LT1123
3
n/a
30
5
–*
700
5
–
C
SOT-223, TO-92
LT1573
5*
2.8
10
1.265
–*
1.7mA
Adj, 2.5, 2.8, 3.3
–
CI
SO-8
LT3150
10*
1.4
10
1.23
0.13
12mA
Adj
–
C
SSOP-16
LT1575
–*
n/a
22
1.21
–*
12mA
Adj, 1.5, 2.8, 3.3, 5
–
C
DIP-8, SO-8
LT1577
–*
n/a
22
1.21
–*
12mA
Adj, 2.8, 3.3
–
C
SO-16
* Depends On Selection of External Pass Device L I N E A R L D O R E G U L AT O R S O L U T I O N S
Radiation Hardened (RH) Linear Regulators
Linear Technology manufactures a broad range of rugged radiation tolerant (rad hard) voltage regulators that are ideal for
space and military applications. We also partner with several outside vendors to provide monolithic packaged and hybrid
products of Linear Technology RH DICE.
Part Number
Polarity
Output Current (A)
Max. VIN (V)
Reference Voltage (Adj.)
Package
Radiation Hardened (Rad Hard or RH) Linear Regulators
RH1084
Positive
5
25
1.25V
TO-3
RH1086M
Positive
0.5/1.5
25
1.25V
Dice, TO–3, TO–39
RH117
Positive
0.5/1.5
40
1.25V
Dice, TO–3, TO–39
RH137
Negative
1.5
–30
–1.25V
Dice, TO–3, TO–39
RH1573
Positive
5
10
1.265V
Dice
RH1185
Negative
3
–35
–2.37V
Dice
RH3080*
Positive
1
35
10uA
Dice
RH3083*
Positive
3
23
50µA
Dice
* Current Source Reference
References
Robert Dobkin, New Linear Regulators Solve Old Problems,
Linear Technology Corporation, Application Note 142, August 2013
Jim Williams, Load Transient Response Testing for Voltage Regulators,
Linear Technology Corporation, Application Note 104, October 2006.
Jim Williams, Minimizing Switching Regulator Residue in Linear Regulator Outputs,
Linear Technology Corporation, Application Note 101, July 2005.
Todd Owen and Jim Williams, Performance Verification of Low Noise, Low Dropout Regulators,
Linear Technology Corporation, Application Note 83, March 2000.
Craig Varga, LT1575 Ultrafast Linear Controller Makes Fast Transient Response Power Supplies,
Linear Technology Corporation, Application Note 69, September 1996
(see Appendix A, Using PCB Material as Low Value Resistors).
Goran Perica, Ceramic Input Capacitors Can Cause Overvoltage Transients,
Linear Technology Corporation, Application Note 88, March 2001.
Bill Roehr, Mounting Considerations for Power Semiconductors, ON Semiconductor,
Application Note 1040/D, May 2001.
Tom Gross, LDO Linear Regulators Rival Switchers for Efficiency,
Linear Technology Corporation, Linear Technology Magazine, May 2005.
LT1963A 1.5A, Low Noise, Fast Transient Response LDO Regulator data sheet,
Linear Technology Corporation.
All reference materials listed above are available at www.linear.com
Videos / Video Product Briefs
LT3009 LT3015 LT3070/71 LT3080 LT3081 LT3086 LT3090 LT3092
All videos listed above are available at www.linear.com/solutions/video
13
Sa l es Of f ices
N O RT H AME RI CA
NO RT HE A S T U. S .
C H IN A
K OREA
WES TER N U .S.
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Tel: (215) 638-9667
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Tel: (604) 783-3084
Iowa
Tel: (847) 925-0860
Ottawa, ON
Tel: (613) 680-3473
Kansas
Tel: (913) 634-7966
Toronto, ON
Tel: (440) 239-0817
Michigan
Tel: (440) 239-0817
Montreal, QC
Tel: (514) 236-6261
7805 Telegraph Rd., Ste. 225
Bloomington, MN 55438
Tel: (952) 903-0605
A SIA /PA C IFIC
Missouri
Tel: (913) 634-7966
133 Alexander Street
Crows Nest, NSW 2065, Australia
Tel: +61 (0)2 9432 7803
Fax: +61 (0)2 9439 2738
Columbus, OH
Tel: (614) 488-4466
7550 Lucerne Dr., Ste. 106
Middleburg Heights, OH 44130
Tel: (440) 239-0817
Fax: (440) 239-1466
Calgary, AB
Tel: (403) 455-3577
A US T R A L I A /NE W Z E AL AN D
Suite 112B, 89 High Street
Kew, Victoria 3101, Australia
Tel: +61 3 9854 6120
Unit 09, 14/F, Complex Building
No. 88 Shenghe Yi Rd., Hi-Tech Zone
Sichuan Province, Chengdu City
China 610041
Tel: +86 028-8555 9725
Fax: +86 028-8542 6859
Unit 1503-04, Metroplaza Tower 2
223 Hing Fong Road
Kwai Fong, N.T., Hong Kong
Tel: +852 2428-0303
Fax: +852 2348-0885
S IN G APOR E
507 Yishun Industrial Park A
Singapore 768734
Tel: +65 6753-2692
Fax: +65 6752-0108
TAIWAN
8F-1, 77, Nanking E. Rd., Sec. 3
Taipei, Taiwan
Tel: +886 (2) 2505-2622
Fax: +886 (2) 2516-0702
Room 2701, City Gateway
No. 398 Cao Xi North Road
Shanghai, China 200030
Tel: +86 (21) 6375-9478
Fax: +86 (21) 5465-5918
EUROPE
F IN LAN D
Kirkkokatu 31
90100 Oulu, Finland
Tel: +358 (0)46 712 2171
Fax: +358 (0)46 712 2175
Room 2109-2111, 21/F, Block D
Southern International Plaza
3013 Yitian Road, Futian District
Shenzhen, China 518048
Tel: +86 755-2360-4866
Fax: +86 755-2360-4966
Room 1805, Tower A
Optics Valley International Plaza
No. 889 Luoyu Rd., Wuchang District
Wuhan, China 430074
Tel: +86 027-8665 9231
Fax: +86 027-8665 9241
Rm. 2410, Tower A, Greenland SOHO
No. 5 ZhangBa 1 Road
High-Tech Development Zone
Shaanxi Province
Xian, China 710065
Tel: +86 029-6851 8978 /68518979
Fax: +86 029-6851 8976
IN D IA
Teknobulevardi 3-5, P.O. Box 35
FIN-01531 Vantaa, Finland
Tel: +358 (0)46 712 2171
Fax: +358 (0)46 712 2175
F RAN C E
Parc Tertiaire Silic
2 Rue de la Couture, BP10217
94518 Rungis CEDEX, France
Tel: +33 (1) 56 70 19 90
Fax: +33 (1) 56 70 19 94
G ERMAN Y
Haselburger Damm 4
D-59387 Ascheberg, Germany
Tel: +49 (2593) 9516-0
Fax: +49 (2593) 951679
Osterfeldstrasse 84, Haus C
D-85737 Ismaning, Germany
Tel: +49 (89) 962455-0
Fax: +49 (89) 963147
602, 6th Floor, Prestige Meridian-1
No. 29, MG Road, Bangalore
560001, India
Tel: +91 80 4012-4610
Fax: +91 80 4012-4612
Jesinger Strasse 65
D-73230 Kirchheim/Teck, Germany
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Fax: +49 (0)7021 807720
JAPAN
7F, Sakuradori Ohtsu KT Bldg.
3-20-22 Marunouchi, Naka-ku
Nagoya-shi, 460-0002, Japan
Tel: +81 (52) 955-0056
Fax: +81 (52) 955-0058
ITALY
Via Torri Bianche 3, Palazzo Larice
20871 Vimercate (MB), Italy
Tel: +39 039 596 5080
Fax: +39 039 596 5090
6F Kearny Place Honmachi Bldg.
1-6-13 Awaza, Nishi-ku
Osaka-shi, 550-0011, Japan
Tel: +81 (6) 6533-5880
Fax: +81 (6) 6543-2588
S WED EN
Electrum 204, Isafjordsgatan 22
SE-164 40 Kista, Sweden
Tel: +46 (8) 623 16 00
Fax: +46 (8) 623 16 50
8F Shuwa Kioicho Park Bldg.
3-6 Kioicho Chiyoda-ku
Tokyo, 102-0094, Japan
Tel: +81 (3) 5226-7291
Fax: +81 (3) 5226-0268
U N IT ED KINGDOM
3 The Listons, Liston Road
Marlow, Buckinghamshire SL7 1FD
United Kingdom
Tel: +44 (1628) 477066
Fax: +44 (1628) 478153
Wisconsin
Tel: (262) 331-4040
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