LINEAR TECHNOLOGY LT3014 Technical data

LT3014

20mA, 3V to 80V

Low Dropout Micropower

Linear Regulator

FEATURES

n

Wide Input Voltage Range: 3V to 80V

n

Low Quiescent Current: 7µA

n

Low Dropout Voltage: 350mV

n

Output Current: 20mA

n

LT3014HV Survives 100V Transients (2ms)

n

No Protection Diodes Needed

n

Adjustable Output from 1.22V to 60V

n

1µA Quiescent Current in Shutdown

n

Stable with 0.47µF Output Capacitor

n

Stable with Aluminum, Tantalum or Ceramic

Capacitors

n

Reverse-Battery Protection

n

No Reverse Current Flow from Output

n

Thermal Limiting

■

Available in 5-Lead ThinSOTTM and
8-Lead DFN Packages

APPLICATIONS

n

Low Current High Voltage Regulators

n

Regulator for Battery-Powered Systems

n

Telecom Applications

n

Automotive Applications

DESCRIPTION

The LT®3014 is a high voltage, micropower low dropout
linear regulator. The device is capable of supplying 20mA of
output current with a dropout voltage of 350mV. Designed
for use in battery-powered or high voltage systems, the low
quiescent current (7μA operating and 1μA in shutdown)
makes the LT3014 an ideal choice. Quiescent current is
also well controlled in dropout.

Other features of the LT3014 include the ability to operate
with very small output capacitors. The regulators are stable
with only 0.47μF on the output while most older devices
require between 10μF and 100μF for stability. Small ceramic
capacitors can be used without the necessary addition of
ESR as is common with other regulators. Internal protec­tion circuitry includes reverse-battery protection, current
limiting, thermal limiting and reverse current protection.

The device is available as an adjustable device with a 1.22V
reference voltage. The LT3014 regulator is available in the
5-lead ThinSOT and 8-lead DFN packages.

L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6118263, 6144250.

TYPICAL APPLICATION

5V Supply with Shutdown

IN

SHDN

OUT

LT3014

ADJ

GND

V

SHDN

<0.3V
>2.0V

V

IN

5.4V TO
80V

1μF

OUTPUT

OFF

ON

3.92M

1.27M

3014 TA01

V

OUT

5V
20mA

0.47μF

Dropout Voltage

400

350

300

250

200

150

100

DROPOUT VOLTAGE (mV)

50

0

0 4 10 12268 14161820

OUTPUT CURRENT (mA)

3014 TA02

3014fd

1

LT3014

ABSOLUTE MAXIMUM RATINGS

IN Pin Voltage, Operating ................................... ±80V

Transient (2ms Survival, LT3014HV) ................ +100V

OUT Pin Voltage ................................................. ±60V

IN to OUT Differential Voltage ............................ ±80V

ADJ Pin Voltage ................................................... ±7V

SHDN Pin Input Voltage ..................................... ±80V

Output Short-Circuit Duration ......................Indefi nite

PIN CONFIGURATION

TOP VIEW

IN 1

GND 2

SHDN 3

S5 PACKAGE

5-LEAD PLASTIC SOT-23

T

= 125°C, θJA = 150°C/ W

JMAX

= 25°C/W MEASURED AT PIN 2

θ

JC

SEE APPLICATIONS INFORMATION SECTION

5 OUT

4 ADJ

(Note 1)

Storage Temperature Range

ThinSOT Package .......................... –65°C to 150°C

DFN Package ..................................–65°C to 125°C

Operating Junction Temperature Range

(Notes 3, 10, 11) ............................–40°C to 125°C

Lead Temperature

(Soldering, 10 sec, SOT-23 Package) ............300°C

TOP VIEW

1OUT

ADJ

2

NC

3

GND

4

EXPOSED PAD IS GND (PIN 9) MUST BE SOLDERED TO PCB

8-LEAD (3mm s 3mm) PLASTIC DFN

T

JMAX

θ

= 10°C/W MEASURED AT PIN 9

JC

9

DD PACKAGE

= 125°C, θJA = 40°C/ W

8

IN

NC

7

NC

6

SHDN

5

ORDER INFORMATION

LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE

LT3014ES5#PBF LT3014ES5#TRPBF LTBMF 5-Lead Plastic SOT-23 –40°C to 125°C

LT3014IS5#PBF LT3014IS5#TRPBF LTBMF 5-Lead Plastic SOT-23 –40°C to 125°C

LT3014HVES5#PBF LT3014HVES5#TRPBF LTBRS 5-Lead Plastic SOT-23 –40°C to 125°C

LT3014HVIS5#PBF LT3014HVIS5#TRPBF LTBRS 5-Lead Plastic SOT-23 –40°C to 125°C

LT3014EDD#PBF LT3014EDD#TRPBF LBMG

LT3014IDD#PBF LT3014IDD#TRPBF LBMG

LT3014HVEDD#PBF LT3014HVEDD#TRPBF LBRT

LT3014HVIDD#PBF LT3014HVIDD#TRPBF LBRT

LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE

LT3014ES5 LT3014ES5#TR LTBMF 5-Lead Plastic SOT-23 –40°C to 125°C

LT3014IS5 LT3014IS5#TR LTBMF 5-Lead Plastic SOT-23 –40°C to 125°C

LT3014HVES5 LT3014HVES5#TR LTBRS 5-Lead Plastic SOT-23 –40°C to 125°C

LT3014HVIS5 LT3014HVIS5#TR LTBRS 5-Lead Plastic SOT-23 –40°C to 125°C

LT3014EDD LT3014EDD#TR LBMG

LT3014IDD LT3014IDD#TR LBMG

LT3014HVEDD LT3014HVEDD#TR LBRT

LT3014HVIDD LT3014HVIDD#TR LBRT

Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed 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 specifi cations, go to: http://www.linear.com/tapeandreel/

8-Lead (3mm × 3mm) Plastic DFN

8-Lead (3mm × 3mm) Plastic DFN

8-Lead (3mm × 3mm) Plastic DFN

8-Lead (3mm × 3mm) Plastic DFN

8-Lead (3mm × 3mm) Plastic DFN

8-Lead (3mm × 3mm) Plastic DFN

8-Lead (3mm × 3mm) Plastic DFN

8-Lead (3mm × 3mm) Plastic DFN

–40°C to 125°C

–40°C to 125°C

–40°C to 125°C

–40°C to 125°C

–40°C to 125°C

–40°C to 125°C

–40°C to 125°C

–40°C to 125°C

3014fd

2

LT3014

ELECTRICAL CHARACTERISTICS

The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T

SYMBOL CONDITIONS MIN TYP MAX UNITS

Minimum Input Voltage I

ADJ Pin Voltage
(Notes 2, 3)

Line Regulation

Load Regulation (Note 2)

Dropout Voltage
V

= V

IN

OUT(NOMINAL)

(Notes 4, 5)

GND Pin Current
V

= V

IN

OUT(NOMINAL)

(Notes 4, 6)

Output Voltage Noise C

ADJ Pin Bias Current (Note 7) 4 10 nA

Shutdown Threshold V

SHDN Pin Current (Note 8) V

Quiescent Current in Shutdown VIN = 6V, V

Ripple Rejection V

Current Limit V

Input Reverse Leakage Current V

Reverse Output Current (Note 9) V

= 20mA

LOAD

VIN = 3.3V, I

3.3V < V

ΔVIN = 3.3V to 80V, I

V

= 3.3V, ΔI

IN

V

= 3.3V, ΔI

IN

= 100μA

I

LOAD

I

= 100μA

LOAD

I

= 1mA

LOAD

I

= 1mA

LOAD

= 10mA

I

LOAD

I

= 10mA

LOAD

I

= 20mA

LOAD

I

= 20mA

LOAD

= 0mA

I

LOAD

I

= 100μA

LOAD

I

= 1mA

LOAD

I

= 10mA

LOAD

I

= 20mA

LOAD

= 0.47μF, I

OUT

= Off to On

OUT

V

= On to Off

OUT

= 0V

SHDN

V

= 6V

SHDN

= 7V (Avg), V

IN

I

= 20mA

LOAD

= 7V, V

IN

V

= 3.3V, ΔV

IN

= –80V, V

IN

= 1.22V, VIN < 1.22V (Note 2) 2 4 μA

OUT

= 25°C.

J

= 100μA

LOAD

< 80V, 100μA < I

IN

LOAD

= 100μA to 20mA

LOAD

= 100μA to 20mA

LOAD

= 20mA, BW = 10Hz to 100kHz 115 μV

LOAD

= 0V

SHDN

RIPPLE

= 0V

OUT

= –0.1V (Note 2)

OUT

= 0V

OUT

< 20mA

LOAD

= 100μA (Note 2)

= 0.5V

P-P

, f

RIPPLE

= 120Hz,

l

1.200

l

1.180

l

3 3.3 V

1.220

1.220

1.240

1.260

110 mV

13 25

l

120 180

l

200 270

l

300 350

l

350 410

l

l
l
l
l
l

l
l

0.25

l
l

l

7
12
40

250
650

1.3

1.3

1

0

14 μA

60 70 dB

70 mA

l

25

l

40

mV

mV

mV

250

mV

mV

360

mV

mV

450

mV

mV

570

20

30
100
450

1000

mV

μA
μA
μA
μA
μA

RMS

2V

4
1

μA
μA

mA

6mA

V
V

V

Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.

Note 2: The LT3014 is tested and specifi ed for these conditions with the
ADJ pin connected to the OUT pin.

Note 3: Operating conditions are limited by maximum junction
temperature. The regulated output voltage specifi cation will not apply
for all possible combinations of input voltage and output current. When
operating at maximum input voltage, the output current range must be
limited. When operating at maximum output current, the input voltage
range must be limited.

Note 4: To satisfy requirements for minimum input voltage, the LT3014 is
tested and specifi ed for these conditions with an external resistor divider
(249k bottom, 392k top) for an output voltage of 3.3V. The external
resistor divider adds a 5µA DC load on the output.

Note 5: Dropout voltage is the minimum input to output voltage differential
needed to maintain regulation at a specifi ed output current. In dropout, the
output voltage is equal to (V

Note 6: GND pin current is tested with V

IN

– V

DROPOUT

IN

).

= V

(nominal) and a current

OUT

source load. This means the device is tested while operating in its dropout
region. This is the worst-case GND pin current. The GND pin current
decreases slightly at higher input voltages.

Note 7: ADJ pin bias current fl ows into the ADJ pin.
Note 8: SHDN pin current fl ows out of the SHDN pin.
Note 9: Reverse output current is tested with the IN pin grounded and the

OUT pin forced to the rated output voltage. This current fl ows into the OUT
pin and out of the GND pin.

Note 10: The LT3014 is tested and specifi ed under pulse load conditions
such that T

≅ TA. The LT3014E is 100% tested at TA = 25°C. Performance

J

at –40°C to 125°C is assured by design, characterization, and statistical

3014fd

3

LT3014

ELECTRICAL CHARACTERISTICS

process controls. The LT3014I is guaranteed over the full –40°C to 125°C
operating junction temperature.

Note 11: This IC includes overtemperature protection that is intended

temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specifi ed maximum operating junction
temperature may impair device reliability.

to protect the device during momentary overload conditions. Junction

TYPICAL PERFORMANCE CHARACTERISTICS

Typical Dropout Voltage Guaranteed Dropout Voltage Dropout Voltage

500

450

400

350

300

250

200

150

DROPOUT VOLTAGE (mV)

100

TJ = 125oC

TJ = 25oC

50

0

01642 6 10 14 18812 20

OUTPUT CURRENT (mA)

3014 G01

600

500

400

300

200

DROPOUT VOLTAGE (mV)

100

0

= TEST POINTS

TJb 125oC

TJb 25oC

4 8 12 16

OUTPUT CURRENT (mA)

3014 G02

500

450

400

350

300

250

200

150

DROPOUT VOLTAGE (mV)

100

2020 6 10 14 18

IL = 20mA

IL = 10mA

IL = 1mA

IL = 100MA

50

0

–50

–25

0

TEMPERATURE (oC)

50

25

75

100

125

3014 G03

10

QUIESCENT CURRENT (μA)

Quiescent Current ADJ Pin Voltage Quiescent Current

16

VIN = 6V

= d

R

L

14

= 0

I

L

12

8

6

4

2

0

–25 0 50

–50

V

= V

SHDN

IN

V

= 0V

SHDN

25

TEMPERATURE (oC)

75 100 125

3014 G04

1.240
IL = 100μA

1.235

1.230

1.225

1.220

1.215

ADJ PIN VOLTAGE (V)

1.210

1.205

1.200

–25 0 50

–50

25

TEMPERATURE (oC)

75 100 125

3014 G05

16

TJ = 25oC

= d

R

L

14

= 1.22V

V

OUT

12

10

8

6

4

QUIESCENT CURRENT (μA)

2

0

08

V

213579

INPUT VOLTAGE (V)

SHDN

V

= V

SHDN

IN

= 0V

6

4

10

3014 G06

3014fd

4

TYPICAL PERFORMANCE CHARACTERISTICS

LT3014

GND Pin Current GND Pin Current vs I

1000

900

800

700

600

500

400

300

GND PIN CURRENT (μA)

200

100

0

0

TJ = 25oC
*FOR V

= 1.22V

OUT

RL = 617

= 20mA*

I

L

RL = 1227

= 10mA*

I

L

RL = 1.22k

= 1mA*

I

L

2143679510

INPUT VOLTAGE (V)

8

3014 G07

1000

GND PIN CURRENT (μA)

900

800

700

600

500

400

300

200

100

VIN = 3.3V
T
V

0

0

= 25oC

J

= 1.22V

OUT

42

OUTPUT CURRENT (mA)

86

10

LOAD

12 14 18

16

20

3014 G08

SHDN Pin Threshold

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

SHDN PIN THRESHOLD (V)

0.4

0.2

0

–50

TEMPERATURE (oC)

SHDN Pin Current SHDN Pin Current ADJ Pin Bias Current

1.2
TJ = 25oC

CURRENT FLOWS
OUT OF SHDN PIN

1.0

0.8

0.6

0.4

SHDN PIN CURRENT (μA)

0.2

0

012

SHDN PIN VOLTAGE (V)

2.5

1.6
V

= 0V

SHDN

CURRENT FLOWS

1.4
OUT OF SHDN PIN

1.2

1.0

0.8

0.6

0.4

SHDN PIN CURRENT (μA)

0.2

0

3

3.5

40.5 1.5

3014 G10

–25 0 50

–50

25

TEMPERATURE (oC)

75 100 125

3014 G11

14

12

10

8

6

4

ADJ PIN BIAS CURRENT (nA)

2

0

–25 0 50

–50

TEMPERATURE (oC)

250–25 50 75

25

75 100 125

125100

3014 G09

3014 G12

Current Limit Current Limit Reverse Output Current

80

V

= 0V

OUT

= 25oC

T

J

70

60

50

40

30

CURRENT LIMIT (mA)

20

10

0

428612141810 20

0

16

INPUT VOLTAGE (V)

3014 G13

100

VIN = 7V

90

= 0V

V

OUT

80

70

60

50

40

30

CURRENT LIMIT (mA)

20

10

0

–50

–25

50

25

0

TEMPERATURE (oC)

50

TJ = 25oC

45

= 0V

V

IN

= V

V

OUT

40

35

30

25

20

15

10

REVERSE OUTPUT CURRENT (μA)

5

100

125

3014 G14

75

0

ADJ

CURRENT FLOWS
INTO OUTPUT PIN

21

0

OUTPUT VOLTAGE (V)

ADJ PIN

ESD CLAMP

43

5

67 9

8

3014 G15

3014fd

10

5