LINEAR TECHNOLOGY LT3011 Technical data

LT3011

50mA, 3V to 80V Low

Dropout Micropower Linear

Regulator with PWRGD

FEATURES

n

Wide Input Voltage Range: 3V to 80V

n

Low Quiescent Current: 46μA

n

Low Dropout Voltage: 300mV

n

Output Current: 50mA

n

PWRGD Flag with Programmable Delay

n

No Protection Diodes Needed

n

Adjustable Output from 1.24V to 60V

n

1μA Quiescent Current in Shutdown

n

Stable with 1μF Output Capacitor

n

Stable with Ceramic, Tantalum, and Aluminum

Capacitors

n

Reverse-Battery Protection

n

No Reverse Current Flow from Output to Input

n

Thermal Limiting

n

Thermally Enhanced 12-Lead MSOP and

10-Pin (3mm × 3mm) DFN Packages

APPLICATIONS

n

Low Current High Voltage Regulators

n

Regulator for Battery-Powered Systems

n

Telecom Applications

n

Automotive Applications

DESCRIPTION

The LT®3011 is a high voltage, micropower, low dropout
linear regulator. The device is capable of supplying 50mA of
output current with a dropout voltage of 300mV. Designed
for use in battery-powered high voltage systems, the low
quiescent current (46μA operating and 1μA in shutdown)
is well controlled in dropout, making the LT3011 an ideal
choice.

The LT3011 includes a PWRGD fl ag to indicate output
regulation. The delay between regulated output level and
fl ag indication is programmable with a single capacitor.
The LT3011 also has the ability to operate with very small
output capacitors; it is stable with only 1μF on the output.
Small ceramic capacitors can be used without the addition
of any series resistance (ESR) as is common with other
regulators. Internal protection circuitry includes reverse­battery protection, current limiting, thermal limiting, and
reverse current protection.

The LT3011 features an adjustable output with a 1.24V
reference voltage. The device is available in the thermally
enhanced 12-lead MSOP and the low profi le (0.75mm)
10-pin (3mm × 3mm) DFN package, both providing excel­lent thermal characteristics.

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

5V Supply with Shutdown

IN

V

IN

3V TO
80V

V

SHDN

<0.3V
>2.0V

1.6M

1μF

POWER GOOD

OUTPUT

OFF

ON

LT3011

SHDN

PWRGD

GND

C

OUT

ADJ

T

1000pF

750k

249k

1μF

V

OUT

5V
50mA

3011 TA01

350

300

250

200

150

100

DROPOUT VOLTAGE (mV)

50

0

0

Dropout Voltage

10 20 30 50

OUTPUT CURRENT (mA)

40

3011 TA02

3011f

1

LT3011

ABSOLUTE MAXIMUM RATINGS

IN Pin Voltage .........................................................±80V

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

Input-to-Output Differential Voltage ........................±80V

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

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

Pin Voltage .................................................. 7V, –0.5V

C

T

PWRGD Pin Voltage ....................................... 80V, –0.5V

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

PIN CONFIGURATION

TOP VIEW

10

OUT

1

ADJ

2

11

3

GND

4

NC

5

PWRG D

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

T

JMAX

EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB

DD PACKAGE

= 150°C, θJA = 43°C/W, θJC = 16°C/W

IN

NC

9

SHDN

8

7

NC

6

C

T

(Note 1)

Storage Temperature Range ................... –65°C to 150°C

Operating Junction Temperature
(Notes 3, 10, 11)

LT3011E, LT3011I .............................. –40°C to 125°C

LT3011H ............................................ –40°C to 150°C

Lead Temperature (Soldering, 10 sec)

MSE Package Only ............................................ 300°C

TOP VIEW

1

NC

2

OUT

3

ADJ

GND

NC

PWRG D

T

= 150°C, θJA = 40°C/W, θJC = 16°C/W

JMAX

EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB

13

4
5
6

MSE PACKAGE

12-LEAD PLASTIC MSOP

NC

12

IN

11

NC

10

SHDN

9

NC

8

C

7

T

ORDER INFORMATION

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

LT3011EDD#PBF LT3011EDD#TRPBF LDKQ

LT3011IDD#PBF LT3011IDD#TRPBF LDKQ

10-Lead (3mm × 3mm) Plastic DFN

10-Lead (3mm × 3mm) Plastic DFN

LT3011EMSE#PBF LT3011EMSE#TRPBF 3011 12-Lead Plastic MSOP –40°C to 125°C

LT3011HMSE#PBF LT3011HMSE#TRPBF 3011 12-Lead Plastic MSOP –40°C to 150°C

LT3011IMSE#PBF LT3011IMSE#TRPBF 3011 12-Lead Plastic MSOP –40°C to 125°C

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

LT3011EDD LT3011EDD#TR LDKQ

LT3011IDD LT3011IDD#TR LDKQ

10-Lead (3mm × 3mm) Plastic DFN

10-Lead (3mm × 3mm) Plastic DFN

LT3011EMSE LT3011EMSE#TR 3011 12-Lead Plastic MSOP –40°C to 125°C

LT3011HMSE LT3011HMSE#TR 3011 12-Lead Plastic MSOP –40°C to 150°C

LT3011IMSE LT3011IMSE#TR 3011 12-Lead Plastic MSOP –40°C to 125°C

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:

For more information on tape and reel specifi cations, go to:

http://www.linear.com/leadfree/

http://www.linear.com/tapeandreel/

–40°C to 125°C

–40°C to 125°C

–40°C to 125°C

–40°C to 125°C

3011f

2

LT3011

ELECTRICAL CHARACTERISTICS

The l

denotes the specifi cations which apply over the –40°C to 125°C operating temperature range, otherwise specifi cations are TJ = 25°C.

(LT3011E, LT3011I)

PARAMETER CONDITIONS MIN TYP MAX UNITS

Minimum Input Voltage I

ADJ Pin Voltage (Notes 2, 3) V

Line Regulation (Note 2)

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

= 50mA

LOAD

= 3V, I

IN

4V < V

< 80V, 1mA < I

IN

ΔV

= 3V to 80V, I

IN

VIN = 4V, ΔI
V

= 4V, ΔI

IN

= 1mA

I

LOAD

I

= 1mA

LOAD

I

= 10mA

LOAD

I

= 10mA

LOAD

I

= 50mA

LOAD

I

= 50mA

LOAD

= 0mA

I

LOAD

I

= 1mA

LOAD

I

= 10mA

LOAD

I

= 50mA

LOAD

= 10μF, I

OUT

= 1mA

LOAD

LOAD

= 1mA to 50mA

LOAD

= 1mA to 50mA

LOAD

= 50mA, BW = 10Hz to 100kHz, V

LOAD

< 50mA

LOAD

= 1mA

= 1.24V 100 μV

OUT

l

l

l

l

l

l

l

l
l
l
l

1.228

1.215

2.8 4 V

1.24

1.24

1.252

1.265

112 mV

61525mV

100 150

190

200 260

350

300 370

550

46
105
410

1.9

90
200
700

3.3

RMS

ADJ Pin Bias Current (Note 7 ) 30 100 nA

Shutdown Threshold V

SHDN Pin Current (Note 8) V

Quiescent Current in Shutdown V

= Off to On

OUT

V

= On to Off

OUT

SHDN

V

SHDN

= 6V, V

IN

= 0V
= 6V

= 0V 1 5 μA

SHDN

PWRGD Trip Point % of Nominal Output Voltage, Output Rising

l
l

0.3

1.3

1.1

0.5

0.1

l

85 90 94 %

2V

2

0.5

PWRGD Trip Point Hysteresis % of Nominal Output Voltage 1.1 %

PWRGD Output Low Voltage I

C

Pin Charging Current

T

C

Pin Voltage Differential V

T

Ripple Rejection V

Current Limit V

Input Reverse Leakage Current V

Reverse Output Current (Note 9) V

= 50μA

PWRGD

CT(PWRGD High)

= 7V (Avg), V

IN

= 7V, V

IN

V

= 4V, ΔV

IN

= –80V, V

IN

= 1.24V, VIN < 1.24V (Note 2) 8 15 μA

OUT

– V

CT(PWRGD Low)

RIPPLE

= 0V

OUT

= –0.1V (Note 2)

OUT

= 0V

OUT

= 0.5V

P-P

, f

RIPPLE

= 120Hz, I

= 50mA 65 85 dB

LOAD

l

l

140 250 mV

36 μA

1.67 V

140 mA

l

60

l

6mA

V
V

mV

mV
mV

mV
mV

mV
mV

μA
μA
μA

mA

V

μA
μA

mA

ELECTRICAL CHARACTERISTICS

The l

denotes the specifi cations which apply over the –40°C to 150°C operating temperature range, otherwise specifi cations are TJ = 25°C.

(LT3011H)

PARAMETER CONDITIONS MIN TYP MAX UNITS

Minimum Input Voltage I

ADJ Pin Voltage (Notes 2, 3) V

Line Regulation (Note 2)

Load Regulation (Note 2)

= 50mA

LOAD

= 3V, I

IN

4V < V

IN

ΔV

= 3V to 80V, I

IN

V

= 4V, ΔI

IN

V

= 4V, ΔI

IN

= 1mA

LOAD

< 80V, 1mA < I

LOAD

= 1mA to 50mA

LOAD

= 1mA to 50mA

LOAD

< 50mA

LOAD

= 1mA

l

1.228

l

1.215

l

2.8 4 V

1.24

1.24

1.252

1.265

112 mV

61525mV

l

3011f

3

V
V

mV

LT3011

ELECTRICAL CHARACTERISTICS

The l

denotes the specifi cations which apply over the –40°C to 150°C operating temperature range, otherwise specifi cations are at TJ = 25°C.

(LT3011H)

PARAMETER CONDITIONS MIN TYP MAX UNITS

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

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

OUT

= 1mA
= 1mA

= 10mA
= 10mA

= 50mA
= 50mA

= 0mA
= 1mA
= 10mA
= 50mA

= 10μF, I

= 50mA, BW = 10Hz to 100kHz, V

LOAD

l

l

l

l
l
l
l

= 1.24V 100 μV

OUT

100 150

220

200 260

380

300 370

575

46
105
410

1.9

125
225
750

3.5

mV
mV

mV
mV

mV
mV

mA

RMS

ADJ Pin Bias Current (Note 7) 30 100 nA

Shutdown Threshold V

SHDN Pin Current (Note 8) V

Quiescent Current in Shutdown V

OUT

V

OUT

SHDN

V

SHDN

IN

= 6V, V

= Off to On
= On to Off

= 0V
= 6V

SHDN

= 0V 1 5 μA

PWRGD Trip Point % of Nominal Output Voltage, Output Rising

l
l

0.3

1.3

1.1

0.5

0.1

l

85 90 95 %

2V

2

0.5

PWRGD Trip Point Hysteresis % of Nominal Output Voltage 1.1 %

PWRGD Output Low Voltage I

C

Pin Charging Current

T

C

Pin Voltage Differential V

T

Ripple Rejection V

Current Limit V

Input Reverse Leakage Current V

Reverse Output Current (Note 9) V

= 50μA

PWRGD

CT(PWRGD High)

= 7V (Avg), V

IN

= 7V, V

IN

V

= 4V, ΔV

IN

= –80V, V

IN

= 1.24V, VIN < 1.24V (Note 2) 8 15 μA

OUT

– V

CT(PWRGD Low)

RIPPLE

= 0V

OUT

= –0.1V (Note 2)

OUT

= 0V

OUT

= 0.5V

P-P

, f

RIPPLE

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 LT3011 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 LT3011
is tested and specifi ed for these conditions with an external resistor
divider (249k bottom, 409k top) for an output voltage of 3.3V. The external
resistor divider will add 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 will be equal to (V

Note 6: GND pin current is tested with V

IN

– V

DROPOUT

= V

IN

).

OUT(NOMINAL)

and a current

source load. This means the device is tested while operating close to its

= 120Hz, I

= 50mA 65 85 dB

LOAD

dropout region. This is the worst-case GND pin current. The GND pin
current will decrease 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 the GND pin.

Note 10: The LT3011 regulators are tested and specifi ed under pulse
load conditions such that TJ ≅ TA. The LT3011E regulators are 100%
tested at T

= 25°C. Performance of the LT3011E over the full –40°C

A

to 125°C operating junction temperature range is assured by design,
characterization and correlation with statistical process controls. The
LT3011I regulators are guaranteed over the full –40°C to 125°C operating
junction temperature range. The LT3011H is tested to the LT3011H
Electrical Characteristics table at 150°C operating junction temperature.
High junction temperatures degrade operating lifetimes. Operating lifetime
is derated at junction temperatures greater than 125°C.

Note 11: This IC includes overtemperature protection that is intended to protect
the device during momentary overload conditions. Junction temperature will
exceed 125°C (LT3011E/LT3011I) or 150°C (LT3011H) when overtemperature
protection is active. Continuous operation above the specifi ed maximum
operating junction temperature may impair device reliability.

l

l

140 250 mV

36 μA

1.67 V

l

60

l

140 mA

mA

6mA

3011f

μA
μA
μA

V

μA
μA

4

LT3011

TYPICAL PERFORMANCE CHARACTERISTICS

TJ = 25°C, unless otherwise noted.

Dropout Voltage Guaranteed Dropout Voltage Dropout Voltage

400

350

300

250

200

150

100

DROPOUT VOLTAGE (mV)

50

0

TJ 125oC

TJ 25oC

10 204030 50

0

OUTPUT CURRENT (mA)

3011 G01

600

500

400

300

200

DROPOUT VOLTAGE (mV)

100

0

= TEST POINTS

TJb 125oC

TJb 25oC

10 20 30 40

OUTPUT CURRENT (mA)

505015253545

3011 G02

400

350

300

250

200

150

100

DROPOUT VOLTAGE (mV)

50

0

–50

Quiescent Current ADJ Pin Voltage Quiescent Current

80

VIN = 6V

= ∞

R

L

70

= 0

I

L

60

50

40

30

20

QUIESCENT CURRENT (μA)

10

0

–25 0 50

–50

V

SHDN

V

SHDN

25

TEMPERATURE (°C)

= V

IN

= GND

75 100 125 150

3011 G04

1.250
IL = 1mA

1.248

1.246

1.244

1.242

1.240

1.238

1.236

ADJ PIN VOLTAGE (V)

1.234

1.232

1.230

–50

–25

25 50 10075 125

0

TEMPERATURE (°C)

150

3011 G05

80

TJ = 25°C
R

70

L

60

50

40

30

20

QUIESCENT CURRENT (μA)

10

0

0

IL = 50mA

IL = 10mA

IL = 1mA

–25

=

19

25 50 10075 125

0

TEMPERATURE (°C)

150

3011 G03

d

V

= V

SHDN

IN

24

358610
INPUT VOLTAGE (V)

7

3011 G06

GND Pin Current GND Pin Current vs I

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

GND PIN CURRENT (mA)

0.4

0.2

0

0

TJ = 25°C
*FOR V

RL = 1.24k, IL = 1mA*

2143679510

INPUT VOLTAGE (V)

= 1.24V

OUT

RL = 24.8Ω

= 50mA*

I

L

RL = 124Ω

= 10mA*

I

L

RL = 49.6Ω

= 25mA*

I

L

8

3011 G07

2.0
VIN = V

1.8

1.6

1.4

1.2

1.0

0.8

0.6

GND PIN CURRENT (mA)

0.4

0.2

0

OUT(NOMINAL)

= 25°C

T

J

0

1052015 30 35 4525 50

OUTPUT CURRENT (mA)

+1V

OUT

SHDN Pin Threshold

1.6

1.4

1.2

1.0

0.8

0.6

0.4

SHDN PIN THRESHOLD (V)

0.2

0

–25 0 50

40

3011 G08

–50

25

TEMPERATURE (°C)

75 100 125 150

3011 G09

3011f

5