ANALOG DEVICES LT 3009ESC8-1.2 Datasheet

LT3009 Series

3µA IQ, 20mA

Low Dropout Linear Regulators

FEATURES

n

Ultralow Quiescent Current: 3μA

n

Input Voltage Range: 1.6V to 20V

n

Output Current: 20mA

n

Dropout Voltage: 280mV

n

Adjustable Output (V

n

Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V,

ADJ

= V

OUT(MIN)

= 600mV)

3.3V, 5V

n

Output Tolerance: ±2% Over Load, Line and Temperature

n

Stable with Low ESR, Ceramic Output Capacitors

(1μF minimum)

n

Shutdown Current: <1μA

n

Current Limit Protection

n

Reverse-Battery Protection

n

Thermal Limit Protection

n

8-Lead SC70 and 2mm × 2mm DFN Packages

APPLICATIONS

n

Low Current Battery-Powered Systems

n

Keep-Alive Power Supplies

n

Remote Monitoring

Utility Meters
Hotel Door Locks

DESCRIPTION

The LT®3009 Series are micropower, low dropout voltage
(LDO) linear regulators. The devices supply 20mA output
current with a dropout voltage of 280mV. No-load quiescent
current is 3μA. Ground pin current remains at less than
5% of output current as load increases. In shutdown,
quiescent current is less than 1μA.

The LT3009 regulators optimize stability and transient
response with low ESR ceramic capacitors, requiring a
minimum of only 1μF. The regulators do not require the
addition of ESR as is common with other regulators.
Internal protection circuitry includes current limiting,
thermal limiting, reverse-battery protection and reverse­current protection.

The LT3009 Series are ideal for applications that require
moderate output drive capability coupled with ultralow
standby power consumption. The device is available in
fi xed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V,
and as an adjustable device with an output voltage range
down to the 600mV reference. The LT3009 is available in
the 6-lead DFN and 8-lead SC70 packages.

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

TYPICAL APPLICATION

3.3V, 20mA Supply with Shutdown

V

3.75V TO
20V

IN

1μF

IN

LT3009-3.3

SHDN

GND

OUT

1μF

V

OUT

3.3V
20mA

3009 TA01a

Dropout Voltage/Quiescent Current

500

I

= 20mA

LOAD

450 4.5

400

350 3.5

300

I

250

Q

200

150

DROPOUT VOLTAGE (mV)

100

50

0

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

DROPOUT
VOLTAGE

5.0

QUIESCENT CURRENT (μA)

4.0

3.0

2.5

2.0

1.5

1.0

0.5

0

3009 TA01b

3009fc

1

LT3009 Series

ABSOLUTE MAXIMUM RATINGS

(Note 1)

IN Pin Voltage .........................................................±22V

OUT Pin Voltage ......................................................±22V

Input-to-Output Differential Voltage ........................±22V

ADJ Pin Voltage ......................................................±22V

SHDN Pin Voltage (Note 8) .....................................±22V

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

PIN CONFIGURATION

TOP VIEW

6

ADJ/NC*

T

EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB

* The ADJ pin is not connected in fi xed output voltage versions.
** See the Applications Information section.

1

2

3

DC PACKAGE

7

OUT

OUT

6-LEAD (2mm s 2mm) PLASTIC DFN

= 125°C, θJA = 65°C/W TO 85°C/W**

JMAX

GND

5

SHDN

IN

4

Operating Junction Temperature Range (Notes 2, 3)

(E, I Grades) ......................................–40°C to 125°C

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

Lead Temperature: Soldering, 10 sec

SC8 Package Only ............................................. 300°C

TOP VIEW

SHDN 1

GND 2
GND 3
GND 4

SC8 PACKAGE

8-LEAD PLASTIC SC70

T

= 125°C, θJA = 75°C/W TO 95°C/W**

JMAX

8 NC
7 ADJ/NC*
6 OUT
5 IN

ORDER INFORMATION

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

LT3009EDC#PBF LT3009EDC#TRPBF LCQX
LT3009IDC#PBF LT3009IDC#TRPBF LCQX
LT3009EDC-1.2#PBF LT3009EDC-1.2#TRPBF LDTW
LT3009IDC-1.2#PBF LT3009IDC-1.2#TRPBF LDTW
LT3009EDC-1.5#PBF LT3009EDC-1.5#TRPBF LDVB
LT3009IDC-1.5#PBF LT3009IDC-1.5#TRPBF LDVB
LT3009EDC-1.8#PBF LT3009EDC-1.8#TRPBF LDKC
LT3009IDC-1.8#PBF LT3009IDC-1.8#TRPBF LDKC
LT3009EDC-2.5#PBF LT3009EDC-2.5#TRPBF LDTY
LT3009IDC-2.5#PBF LT3009IDC-2.5#TRPBF LDTY
LT3009EDC-3.3#PBF LT3009EDC-3.3#TRPBF LDKD
LT3009IDC-3.3#PBF LT3009IDC-3.3#TRPBF LDKD
LT3009EDC-5#PBF LT3009EDC-5#TRPBF LDKF
LT3009IDC-5#PBF LT3009IDC-5#TRPBF LDKF

6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) 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
–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

3009fc

2

LT3009 Series

ORDER INFORMATION

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

LT3009ESC8#PBF LT3009ESC8#TRPBF LCQY 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-1.2#PBF LT3009ESC8-1.2#TRPBF LDTX 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-1.5#PBF LT3009ESC8-1.5#TRPBF LDVC 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-1.8#PBF LT3009ESC8-1.8#TRPBF LDKG 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-2.5#PBF LT3009ESC8-2.5#TRPBF LDTZ 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-3.3#PBF LT3009ESC8-3.3#TRPBF LDKH 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-5#PBF LT3009ESC8-5#TRPBF LDKJ 8-Lead Plastic SC70 –40°C to 125°C

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

LT3009EDC LT3009EDC#TR LCQX
LT3009IDC LT3009IDC#TR LCQX
LT3009EDC-1.2 LT3009EDC-1.2#TR LDTW
LT3009IDC-1.2 LT3009IDC-1.2#TR LDTW
LT3009EDC-1.5 LT3009EDC-1.5#TR LDVB
LT3009IDC-1.5 LT3009IDC-1.5#TR LDVB
LT3009EDC-1.8 LT3009EDC-1.8#TR LDKC
LT3009IDC-1.8 LT3009IDC-1.8#TR LDKC
LT3009EDC-2.5 LT3009EDC-2.5#TR LDTY
LT3009IDC-2.5 LT3009IDC-2.5#TR LDTY
LT3009EDC-3.3 LT3009EDC-3.3#TR LDKD
LT3009IDC-3.3 LT3009IDC-3.3#TR LDKD
LT3009EDC-5 LT3009EDC-5#TR LDKF
LT3009IDC-5 LT3009IDC-5#TR LDKF
LT3009ESC8 LT3009ESC8#TR LCQY 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-1.2 LT3009ESC8-1.2#TR LDTX 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-1.5 LT3009ESC8-1.5#TR LDVC 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-1.8 LT3009ESC8-1.8#TR LDKG 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-2.5 LT3009ESC8-2.5#TR LDTZ 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-3.3 LT3009ESC8-3.3#TR LDKH 8-Lead Plastic SC70 –40°C to 125°C
LT3009ESC8-5 LT3009ESC8-5#TR LDKJ 8-Lead Plastic SC70 –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: http://www.linear.com/leadfree/
For more information on tape and reel specifi

cations, go to: http://www.linear.com/tapeandreel/

6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) 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
–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

3009fc

3

LT3009 Series

ELECTRICAL CHARACTERISTICS

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

PARAMETER CONDITIONS MIN TYP MAX UNITS

Operating Voltage
Regulated Output Voltage (Note 4) LT3009-1.2: V

ADJ Pin Voltage (Notes 3, 4) VIN = 1.6V, I

Line Regulation (Note 3)

Load Regulation (Note 3) LT3009-1.2: V

Dropout Voltage
V

= V

IN

OUT(NOMINAL)

Quiescent Current (Notes 6, 7) I

GND Pin Current
VIN = V

OUT(NOMINAL)

(Notes 5, 6)

+ 0.5V (Notes 6, 7)

= 25°C. (Note 2)

J

= 1.7V, I

1.7V < V

IN

< 20V, 1μA < I

IN

LT3009-1.5: VIN = 2V, I
2V < V

< 20V, 1μA < I

IN

LT3009-1.8: VIN = 2.3V, I

2.3V < V

< 20V, 1μA < I

IN

LT3009-2.5: VIN = 3V, I
3V < V

< 20V, 1μA < I

IN

LT3009-3.3: V

3.8V < V

= 3.8V, I

IN

< 20V, 1μA < I

IN

LT3009-5: VIN = 5.5V, I

3.8V < V

1.6V < V
LT3009-1.2: ΔV

LT3009-1.5: ΔV
LT3009-1.8: ΔV
LT3009-2.5: ΔV
LT3009-3.3: ΔV
LT3009-5: ΔV
LT3009: ΔV

LT3009-1.5: V
LT3009-1.8: V
LT3009-2.5: V
LT3009-3.3: V
LT3009-5: V
LT3009: V

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

I

LOAD

< 20V, 1μA < I

IN

LOAD

< 20V, 1μA < I

IN

= 100μA
= 100μA

= 1mA
= 1mA

= 10mA
= 10mA

= 20mA
= 20mA

= 0μA
= 0μA

= 0μA
= 100μA
= 1mA
= 10mA
= 20mA

= 100μA

= 1.7V to 20V, I

IN

= 2.0V to 20V, I

IN

= 2.3V to 20V, I

IN

= 3.0V to 20V, I

IN

= 3.8V to 20V, I

IN

= 5.5V to 20V, I

IN

= 1.6V to 20V, I

IN

= 1.7V, I

IN

= 2V, I

IN

= 2.3V, I

IN

= 3V, I

IN

= 3.8V, I

IN

= 5.5V, I

IN

= 1.6V, I

IN

= 100μA

LOAD

< 20mA

LOAD

= 100μA

LOAD

< 20mA

LOAD

= 100μA

LOAD

< 20mA

LOAD

= 100μA

LOAD

< 20mA

LOAD

= 100μA

LOAD

< 20mA

LOAD

= 100μA

LOAD

< 20mA

LOAD

< 20mA

LOAD

= 1μA to 20mA

LOAD

= 1μA to 20mA

LOAD

= 1μA to 20mA

LOAD

= 1μA to 20mA

LOAD

= 1μA to 20mA

LOAD

= 1μA to 20mA

LOAD

= 1μA to 20mA

LOAD

LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD

= 1mA
= 1mA
= 1mA
= 1mA
= 1mA
= 1mA
= 1mA

l

1.6 20 V

1.188

l

1.176

1.485

l

1.470

1.782

l

1.764

2.475

l

2.45

3.267

l

3.234

4.950

l

4.900
594

l

588

l
l
l
l
l
l
l

l
l
l
l
l
l
l

1.2

1.2

1.5

1.5

1.8

1.8

2.5

2.5

3.3

3.3
5

5

600
600

0.8

1.0

1.2

1.7

2.2

3.3

0.4

1.4

1.8

2.1

2.9

3.9

5.8

0.7

1.212

1.224

1.515

1.530

1.818

1.836

2.525

3.333

3.366

5.050

5.100

115 180

l

170 250

l

250 310

l

280 350

l

3

l

l
l
l
l
l

3
6

23
200
450

1000

2.55

606
612

3.0

3.8

4.5

6.3

8.3

12.5

1.5
6

7.5

9.0

12.5

16.5
25

3

250

350

410

450

6

6
12
50

500

mV
mV

mV
mV
mV
mV
mV
mV
mV

mV
mV
mV
mV
mV
mV
mV

mV
mV

mV
mV

mV
mV

mV
mV

μA
μA

μA
μA
μA
μA
μA

V
V

V
V

V
V

V
V

V
V

V
V

4

3009fc

LT3009 Series

ELECTRICAL CHARACTERISTICS

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

PARAMETER CONDITIONS MIN TYP MAX UNITS

Output Voltage Noise (Note 9) C
ADJ Pin Bias Current
Shutdown Threshold V

SHDN Pin Current V

Quiescent Current in Shutdown V
Ripple Rejection (Note 3) V

Current Limit V

Input Reverse Leakage Current V
Reverse Output Current 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 LT3009 regulators are tested and specifi ed under pulse load
conditions such that T
Performance at –40°C and 125°C is assured by design, characterization
and correlation with statistical process controls. The LT3009I is guaranteed
over the full –40°C to 125°C operating junction temperature range.

Note 3: The LT3009 adjustable version is tested and specifi ed for these
conditions with the ADJ pin connected to the OUT pin.

Note 4: 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 the
maximum input voltage, the output current range must be limited. When
operating at the maximum output current, the input voltage must be limited.

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 equals (V

≈ TA. The LT3009E is 100% tested at TA = 25°C.

J

– V

IN

). For the LT3009-1.2, dropout

DROPOUT

= 25°C. (Note 2)

J

= 1μF, I

OUT

= Off to On

OUT

V

= On to Off

OUT

= 0V, VIN = 20V

SHDN

V

= 20V, VIN = 20V

SHDN

= 6V, V

IN

– V

IN

OUT

f

= 120Hz, I

RIPPLE

LT3009
LT3009-1.2
LT3009-1.5
LT3009-1.8
LT3009-2.5
LT3009-3.3
LT3009-5

= 20V, V

IN

V

= V

IN

OUT(NOMINAL)

= –20V, V

IN

= 1.2V, VIN = 0 0.6 10 μA

OUT

= 20mA, BW = 10Hz to 100kHz 150 μV

LOAD

l

–10 0.3 10 nA

= 0V

SHDN

= 1.5V, V

LOAD

= 0

OUT

= 0

OUT

= 0.5V

RIPPLE

= 20mA

+ 1V, ΔV

OUT

,

P-P

= –5%

l
l

0.2

l
l

l

60
57

55.5
54
52
49
44

l

22

l

0.66

0.36

0.5

72
68
67
66
63
61
56

60 mA

200 350 μA

1.5 V

±1

1.6
<1 μA

voltage will be limited by the minimum input voltage under some voltage/
load conditions.

Note 6: To satisfy minimum input voltage requirements, the LT3009
adjustable version is tested and specifi ed for these conditions with an
external resistor divider (61.9k bottom, 280k top) which sets V

OUT

The external resistor divider adds 9.69μA of DC load on the output. This
external current is not factored into GND pin current.

Note 7: GND pin current is tested with V

= V

IN

OUT(NOMINAL)

+ 0.5V and a

current source load. GND pin current will increase in dropout. For the fi xed
output voltage versions, an internal resistor divider will add to the GND
pin current (∼2μA for the LT3009-5, ∼ 1μA for the LT3009-1.2, LT3009-1.5,
LT3009-1.8, LT3009-2.5 and LT3009-3.3). See the GND Pin Current curves
in the Typical Performance Characteristics section.

Note 8: The SHDN pin can be driven below GND only when tied to the IN
pin directly or through a pull-up resistor. If the SHDN pin is driven below
GND by more than –0.3V while IN is powered, the output will turn on.

Note 9: Output noise is listed for the adjustable version with the ADJ pin
connected to the OUT pin. See the RMS Output Noise vs Load Current
curve in the Typical Performance Characteristics Section.

RMS

μA
μA

dB
dB
dB
dB
dB
dB
dB

mA

to 3.3V.

V

3009fc

5

LT3009 Series

TYPICAL PERFORMANCE CHARACTERISTICS

Dropout Voltage Dropout Voltage Minimum Input Voltage

450

I

= 20mA

LOAD

400

350

300

250

200

150

DROPOUT VOLTAGE (mV)

100

50

0

0

TA = 125°C

TA = 25°C

515

OUTPUT CURRENT (mA)

10

ADJ Pin Voltage

0.612
I

= 100μA

LOAD

0.610

0.608

0.606

0.604

0.602

0.600

0.598

0.596

ADJ PIN VOLTAGE (V)

0.594

0.592

0.590

0.588

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

20

3009 G01

3009 G04

450

400

350

300

250

200

150

DROPOUT VOLTAGE (mV)

100

50

0

20mA

1mA

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

10mA

100μA

Output Voltage
LT3009-1.2

1.224
I

= 100μA

LOAD

1.220

1.216

1.212

1.208

1.204

1.200

1.196

1.192

OUTPUT VOLTAGE (V)

1.188

1.184

1.180

1.176

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

TA = 25°C, unless otherwise noted.

1.6
I

= 20mA

LOAD

1.4

1.2

1

0.8

0.6

0.4

MINIMUM INPUT VOLTAGE (V)

0.2

0

–50 –25 0 25 50 75 100 125 150

3009 G02

TEMPERATURE (°C)

Output Voltage
LT3009-1.5

1.530
I

= 100μA

LOAD

1.525

1.520

1.515

1.510

1.505

1.500

1.495

1.490

OUTPUT VOLTAGE (V)

1.485

1.480

1.475

1.470

–50 –25 0 25 50 75 100 125 150

3009 G27

TEMPERATURE (°C)

3009 G03

3009 G28

Output Voltage
LT3009-1.8

1.836
I

= 100μA

LOAD

1.830

1.824

1.818

1.812

1.806

1.800

1.794

1.788

OUTPUT VOLTAGE (V)

1.782

1.776

1.770

1.764

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

6

3009 G05

Output Voltage
LT3009-2.5

2.55
I

= 100μA

LOAD

2.54

2.53

2.52

2.51

2.50

2.49

2.48

OUTPUT VOLTAGE (V)

2.47

2.46

2.45

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

3009 G29

Output Voltage
LT3009-3.3

3.366
I

= 100μA

LOAD

3.355

3.344

3.333

3.322

3.311

3.300

3.289

3.278

OUTPUT VOLTAGE (V)

3.267

3.256

3.245

3.234

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

3009 G06

3009fc