LTC3109IGN#PBF datasheet, PDF - EEWORLD Datasheet

FeaTures

n

LTC3109

Auto-Polarity, Ultralow

Voltage Step-Up Converter

and Power Manager

DescripTion

The

LTC

®

3109

is a highly integrated DC/DC converter ideal

for harvesting surplus energy from extremely low input

voltage sources such as TEGs (thermoelectric genera-

tors) and thermopiles. Its unique, proprietary autopolarity

topology* allows it to operate from input voltages as low

as 30mV, regardless of polarity.

Using two compact step-up transformers and external

energy storage elements, the LTC3109 provides a com-

plete power management solution for wireless sensing

and data acquisition. The 2.2V LDO can power an external

microprocessor, while the main output can be programmed

to one of four fixed voltages. The power good indicator

signals that the main output is within regulation. A second

output can be enabled by the host. A storage capacitor (or

battery) can also be charged to provide power when the

input voltage source is unavailable. Extremely low quies-

cent current and high efficiency maximizes the harvested

energy available for the application.

The LTC3109 is available in a small, thermally enhanced

20-lead (4mm

×

4mm) QFN package and a 20-lead SSOP

package.

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.

*Patent pending.

n

Operates from Inputs as Low as ±30mV

Less Than ±1°C Needed Across TEG to Harvest

Energy

Proprietary Auto-Polarity Architecture

Complete Energy Harvesting Power Management

System

– Selectable V

OUT

of 2.35V, 3.3V, 4.1V or 5V

– 2.2V, 5mA LDO

– Logic-Controlled Output

– Energy Storage Capability for Operation During

Power Interruption

Power Good Indicator

Uses Compact Step-up Transformers

Small, 20-lead (4mm

×

4mm) QFN Package or

20-Lead SSOP

applicaTions

n

Remote Sensor and Radio Power

HVAC Systems

Automatic Metering

Building Automation

Predictive Maintenance

Industrial Wireless Sensing

Typical applicaTion

TEG

(THERMOELECTRIC GENERATOR)

±30mV TO ±500mV

1:100

1nF

•

C1A

470pF

C2A

SWA

V

INA

C1B

470pF

C2B

V

OUT2

V

OUT

VLDO

OPTIONAL SWITCHED OUTPUT FOR SENSORS

3.3V

2.2V

2.2µF

V

OUT

Current vs TEG Voltage

900

800

1:100 TRANSFORMERS

C1A = C1B = 1nF

V

OUT

= 3.3V

47µF

+

470µF

700

LOW POWER

RADIO

600

I

VOUT

(µA)

500

400

300

200

•

1:100

1nF

LTC3109

µP

PG00D

•

SENSOR(S)

VAUX

SWB V

OUT2_EN

V

INB

VS1

VSTORE

VAUX

VS2

GND

5.25V

1µF

100

+

C

STORE

3109 TA01a

0

–300

–200

–100

0

100

V

TEG

(mV)

200

300

3109 TA01b

3109fb

For more information

www.linear.com/LTC3109

1

LTC3109

absoluTe MaxiMuM raTings

(Note 1)

SWA, SWB, V

INA

, V

INB

Voltage .................... –0.3V to 2V

C1A, C1B Voltage ......................................... –0.3V to 6V

C2A, C2B Voltage (Note 6) .............................. –8V to 8V

V

OUT2

, V

OUT2_EN

.......................................... –0.3V to 6V

VS1, VS2, V

OUT

, PGOOD .............................. –0.3V to 6V

VLDO, VSTORE ............................................ –0.3V to 6V

VAUX...................................................... 15mA Into V

AUX

Operating Junction Temperature Range

(Note 2) .................................................. –40°C to 125°C

Storage Temperature Range .................. –65°C to 125°C

pin conFiguraTion

TOP VIEW

GND

VS2

VS1

C1A

C2A

20 19 18 17 16

VSTORE 1

VAUX 2

V

OUT

3

V

OUT2

4

V

OUT2_EN

5

6

PGOOD

7

VLDO

8

GND

9 10

C1B

C2B

21

GND

15 SWA

14 V

INA

13 V

INB

12 SWB

11 GND

VS1

VS2

VSTORE

VAUX

V

OUT

V

OUT2

V

OUT2_EN

PGOOD

VLDO

1

2

3

4

5

6

7

8

9

TOP VIEW

20 C1A

19 C2A

18 GND

17 SWA

16 V

INA

15 V

INB

14 SWB

13 GND

12 C2B

11 C1B

GND 10

UF PACKAGE

20-LEAD (4mm

×

4mm) PLASTIC QFN

T

JMAX

= 125°C,

θ

JA

= 37°C/W

EXPOSED PAD (PIN 21) IS GND (Note 5)

GN PACKAGE

20-LEAD PLASTIC SSOP

T

JMAX

= 125°C,

θ

JA

= 90°C/W

orDer inForMaTion

LEAD FREE FINISH

LTC3109EUF#PBF

LTC3109IUF#PBF

LTC3109EGN#PBF

LTC3109IGN#PBF

TAPE AND REEL

LTC3109EUF#TRPBF

LTC3109IUF#TRPBF

LTC3109EGN#TRPBF

LTC3109IGN#TRPBF

PART MARKING*

3109

LTC3109GN

PACKAGE DESCRIPTION

20-Lead (4mm

×

4mm) Plastic QFN

20-Lead (4mm

×

4mm) Plastic QFN

20-Lead Plastic SSOP

TEMPERATURE RANGE

–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.

Consult LTC Marketing for information on non-standard lead based finish parts.

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/

2

3109fb

For more information

www.linear.com/LTC3109

LTC3109

elecTrical characTerisTics

PARAMETER

Minimum Start-Up Voltage

No-Load Input Current

The

l

denotes the specifications which apply over the full operating

junction temperature range, otherwise specifications are for T

A

= 25°C (Note 2). VAUX = 5V unless otherwise noted.

CONDITIONS

Using 1:100 Transformer Turns Ratio, VAUX = 0V

Using 1:100 Transformer Turns Ratios,

V

IN

= 30mV, V

OUT2_EN

= 0V, All Outputs Charged

and in Regulation

Using 1:100 Transformer Turns Ratios

VS1 = VS2 = GND

VS1 = VAUX, VS2 = GND

VS1 = GND, VS2 = VAUX

VS1 = VS2 = VAUX

No Load, All Outputs Charged

Current Into VAUX = 5mA

V

OUT

= 3.3V, V

OUT2_EN

= 0V

V

OUT

= 0V

C2B = C2A = 5V (Note 3) Measured from V

INA

or

SWA, V

INB

or SWB to GND

0.5mA Load On V

LDO

For 0mA to 2mA Load

For V

AUX

from 2.5V to 5V

I

LDO

= 2mA

V

LDO

= 0V

VSTORE = 5V

VSTORE = 0V

V

OUT2

= 0V, V

OUT2_EN

= 0V

l

MIN

TYP

±30

6

MAX

±50

UNITS

mV

mA

Input Voltage Range

Output Voltage

V

STARTUP

2.30

3.234

4.018

4.875

5.0

6

2.350

3.300

4.100

5.000

7

5.25

0.2

15

0.35

2.134

2.2

0.5

0.05

100

5

6

0.4

12

0.1

15

50

0.85

1

–7.5

–9

0.12

2.1

2.2

1

1.0

100

5

0.5

±500

2.40

3.366

4.182

5.10

10

5.55

26

mV

V

µA

V

µA

mA

Ω

VAUX Quiescent Current

VAUX Clamp Voltage

V

OUT

Quiescent Current

V

OUT

Current Limit

N-Channel MOSFET On-Resistance

LDO Output Voltage

LDO Load Regulation

LDO Line Regulation

LDO Dropout Voltage

LDO Current Limit

VSTORE Leakage Current

VSTORE Current Limit

V

OUT2

Leakage Current

VS1, VS2 Threshold Voltage

VS1, VS2 Input Current

PGOOD Threshold (Rising)

PGOOD Threshold (Falling)

PGOOD V

OL

PGOOD V

OH

PGOOD Pull-Up Resistance

V

OUT2_EN

Threshold Voltage

V

OUT2_EN

Threshold Hysteresis

V

OUT2_EN

Pull-Down Resistance

V

OUT2

Turn-On Time

V

OUT2

Turn-Off Time

V

OUT2

Current Limit

V

OUT2

Current Limit Response Time

V

OUT2

P-Channel MOSFET On-Resistance

2.30

1

0.2

200

0.3

26

1.2

50

V

%

mV

mA

µA

mA

nA

V

nA

%

V

S1

= V

S2

= 5V

Measured Relative to the V

OUT

Voltage

Measured Relative to the V

OUT

Voltage

Sink Current = 100µA

Source Current = 0

V

OUT2_EN

Rising

l

0.3

2.3

1.3

V

MΩ

V

mV

MΩ

µs

0.4

(Note 3)

V

OUT

= 3.3V

(Note 3)

V

OUT

= 5V (Note 3)

l

0.15

0.2

0.3

350

1.0

0°C to 85°C junction temperature. Specifications over the –40°C to

125°C operating junction temperature range are assured by design,

characterization and correlation with statistical process controls. The

LTC3109I is guaranteed over the full –40°C to 125°C operating junction

temperature range. Note that the maximum ambient temperature

is determined by specific operating conditions in conjunction with

0.5

A

ns

Ω

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 LTC3109 is tested under pulsed load conditions such that

T

J

≈ T

A

. The LTC3109E is guaranteed to meet specifications from

3109fb

For more information

www.linear.com/LTC3109

3

LTC3109

elecTrical characTerisTics

board layout, the rated thermal package thermal resistance and other

environmental factors. The junction temperature (T

J

) is calculated from

the ambient temperature (T

A

) and power dissipation (P

D

) according to

the formula: T

J

= T

A

+ (P

D

•

θ

JA

°C/W), where

θ

JA

is the package thermal

impedance.

Note 3:

Specification is guaranteed by design and not 100% tested in

production.

Note 4:

Current measurements are made when the output is not switching.

Note 5:

Failure to solder the exposed backside of the QFN package to the

PC board ground plane will result in a thermal resistance much higher

than 37°C/W.

Note 6:

The Absolute Maximum Rating is a DC rating. Under certain

conditions in the applications shown, the peak AC voltage on the C2A and

C2B pins may exceed ±8V. This behavior is normal and acceptable because

the current into the pin is limited by the impedance of the coupling

capacitor.

Typical perForMance characTerisTics

T

A

= 25°C, unless otherwise noted.

I

IN

vs V

IN

1000

V

OUT

= 0V

10000

I

VOUT

vs V

IN

1:100 RATIO, C1 = 1nF

1:50 RATIO, C1 = 4.7nF

1:20 RATIO, C1 = 10nF

V

OUT

= 3.3V

NO LOAD ON VLDO

P

VOUT

(mW)

100

P

VOUT

vs V

IN

1:50 RATIO

C1 = 4.7nF

V

OUT

= 5V

100

I

IN

(mA)

1000

I

VOUT

(µA)

10

V

OUT

= 3.3V

1

10

1:100 RATIO, C1 = 1nF

1:50 RATIO, C1 = 4.7nF

1:20 RATIO, C1 = 10nF

10

100

V

IN

(mV)

1000

3109 G01

100

1

10

100

V

IN

(mV)

1000

3109 G02

0.1

10

100

V

IN

(mV)

1000

3109 G18

Input Resistance vs V

IN

7.0

6.5

6.0

EFFICIENCY (%)

5.5

R

IN

( )

5.0

4.5

4.0

3.5

3.0

2.5

2.0

10

1:100 RATIO, C1 = 1nF

1:50 RATIO, C1 = 4.7nF

1:20 RATIO, C1 = 10nF

100

V

IN

(mV)

1000

3109 G03

Efficiency vs V

IN

50

45

40

35

30

25

20

15

10

5

0

10

100

V

IN

(mV)

1000

3109 G04

Open-Circuit Start-Up Voltage

vs Source Resistance

90

80

V

STARTUP

(OPEN CIRCUIT) (mV)

70

60

50

40

30

20

10

0

1

2 3 4 5 6 7 8

SOURCE RESISTANCE ( )

9

10

V

OUT

= 0V

1:100 RATIO, C1 = 1nF

1:50 RATIO, C1 = 4.7nF

1:20 RATIO, C1 = 10nF

V

OUT

= 0V

3109 G05

4

3109fb

For more information

www.linear.com/LTC3109

LTC3109

Typical perForMance characTerisTics

T

A

= 25°C, unless otherwise noted.

1.00

CHANGE (%) (RELATIVE TO 25°C)

0.75

0.50

VAUX (V)

0.25

0

–0.25

–0.50

–0.75

–1.00

–50 –25

0

75

50

25

TEMPERATURE (°C)

100

125

5.0

0

3

9

12

6

VAUX SHUNT CURRENT (mA)

15

3109 G07

V

OUT

and VLDO vs Temperature

VAUX Clamp Voltage

vs Shunt Current

5.5

3.0

2.5

2.0

1.5

1.0

5.1

0.5

0

P

VOUT

vs dT and TEG Size,

1:100 Ratio, V

OUT

= 5V

5.4

VLDO

V

OUT

P

VOUT

(mW)

5.3

FERROTEC 9500/127/100B

40mm

5.2

FERROTEC 9501/071/040B

22mm

0

1

2

3

4

5 6

dT (°K)

7

8

9

10

3109 G06

3109 G08

Resonant Switching Waveforms

0.00

LDO Load Regulation

0.20

0.18

DROPOUT VOLTAGE (V)

0.16

0.14

0.12

0.10

0.08

0.06

0.04

0.02

–1.00

0

0.5

1

1.5 2 2.5

LDO LOAD (mA)

3

3.5

4

3109 G10

LDO Dropout Voltage

C2 A OR B

2V/DIV

DROP IN VLDO (%)

20µs/DIV

3109 G9

C1 A OR B

2V/DIV

–0.25

–0.50

–0.75

0.00

0

0.5

1

1.5 2 2.5

LDO LOAD (mA)

3

3.5

4

3109 G11

Start-Up Voltage Sequencing

V

IN

= 50mV

1:100 RATIO TRANSFORMER

C

OUT

= 220µF

C

STORE

= 470µF

C

LDO

= 2.2µF

V

OUT

and PGOOD Response

During a Step Load

50mA LOAD STEP

C

OUT

= 220µF

CH1

VSTORE

1V/DIV

CH2, V

OUT

1V/DIV

CH3, V

LDO

1V/DIV

V

OUT

Ripple

30µA LOAD

C

OUT

= 220µF

CH2

V

OUT

1V/DIV

CH1

PGD

1V/DIV

5ms/DIV

3109 G13

20mV/

DIV

10SEC/DIV

3109 G12

100ms/DIV

3109 G14

3109fb

For more information

www.linear.com/LTC3109

5

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
Product Category	Step Up Converter
Input Voltage (V)	0.02 to 0.5
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	125
Supplier Temperature Grade	Industrial
Packaging	Tube
Pin Count	20
Standard Package Name	SOP
Supplier Package	SSOP N
Mounting	Surface Mount
Package Height	1.5(Max)
Package Length	8.74(Max)
Package Width	3.99(Max)
PCB changed	20
Lead Shape	Gull-wing

	LTC3109IGN#PBF	LTC3109EGN#PBF	LTC3109EGN#TRPBF	LTC3109EUF#PBF	LTC3109EUF#TRPBF	LTC3109IGN#TRPBF	LTC3109IUF#PBF	LTC3109IUF#TRPBF
Description	Step Up Converter 20-Pin SSOP N Tube	Step Up Converter 20-Pin SSOP N Tube	Step Up Converter 20-Pin SSOP N T/R	Step Up Converter 20-Pin QFN EP Tube	Step Up Converter 20-Pin QFN EP T/R	Step Up Converter 20-Pin SSOP N T/R	Step Up Converter 20-Pin QFN EP Tube	Step Up Converter 20-Pin QFN EP T/R
EU restricts the use of certain hazardous substances	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant
ECCN (US)	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Part Status	Active	Active	Active	Active	Active	Active	Active	Active
Product Category	Step Up Converter	Step Up Converter	Step Up Converter	Step Up Converter	Step Up Converter	Step Up Converter	Step Up Converter	Step Up Converter
Input Voltage (V)	0.02 to 0.5	0.02 to 0.5	0.02 to 0.5	0.02 to 0.5	0.02 to 0.5	0.02 to 0.5	0.02 to 0.5	0.02 to 0.5
Minimum Operating Temperature (°C)	-40	-40	-40	-40	-40	-40	-40	-40
Maximum Operating Temperature (°C)	125	125	125	125	125	125	125	125
Supplier Temperature Grade	Industrial	Extended	Extended	Extended	Extended	Industrial	Industrial	Industrial
Packaging	Tube	Tube	Tape and Reel	Tube	Tape and Reel	Tape and Reel	Tube	Tape and Reel
Pin Count	20	20	20	20	20	20	20	20
Standard Package Name	SOP	SOP	SOP	QFN	QFN	SOP	QFN	QFN
Supplier Package	SSOP N	SSOP N	SSOP N	QFN EP	QFN EP	SSOP N	QFN EP	QFN EP
Mounting	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Height	1.5(Max)	1.5(Max)	1.5(Max)	0.75(Max)	0.75(Max)	1.5(Max)	0.75(Max)	0.75(Max)
Package Length	8.74(Max)	8.74(Max)	8.74(Max)	4	4	8.74(Max)	4	4
Package Width	3.99(Max)	3.99(Max)	3.99(Max)	4	4	3.99(Max)	4	4
PCB changed	20	20	20	20	20	20	20	20
Lead Shape	Gull-wing	Gull-wing	Gull-wing	No Lead	No Lead	Gull-wing	No Lead	No Lead
HTS	-	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01	-	8542.39.00.01	8542.39.00.01

LTC3109IGN#PBF

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