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LT3080IDD-1: 产品描述LT3080-1 - Parallelable 1.1A Adjustable Single Resistor Low Dropout Regulator; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C; 产品类别电源/电源管理电源电路; 文件大小338KB，共24页; 制造商Linear ( ADI ); 官网地址http://www.analog.com/cn/index.html

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LT3080IDD-1概述

LT3080-1 - Parallelable 1.1A Adjustable Single Resistor Low Dropout Regulator; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C

LT3080IDD-1规格参数

参数名称	属性值
Brand Name	Linear Technology
是否Rohs认证	不符合
厂商名称	Linear ( ADI )
零件包装代码	DFN
包装说明	3 X 3 MM, PLASTIC, MO-229WEED-1, DFN-8
针数	8
制造商包装代码	DD
Reach Compliance Code	not_compliant
ECCN代码	EAR99
最大回动电压 1	0.5 V
JESD-30 代码	S-PDSO-N8
JESD-609代码	e0
长度	3 mm
功能数量	1
端子数量	8
工作温度TJ-Max	125 °C
工作温度TJ-Min	-40 °C
最大输出电压 1	36 V
最小输出电压 1
封装主体材料	PLASTIC/EPOXY
封装代码	HVSON
封装形状	SQUARE
封装形式	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
认证状态	Not Qualified
调节器类型	ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度	0.8 mm
表面贴装	YES
端子面层	Tin/Lead (Sn/Pb)
端子形式	NO LEAD
端子节距	0.5 mm
端子位置	DUAL
宽度	3 mm

LT3080IDD-1文档预览

FeaTures

LT3080-1

Parallelable 1.1A

Adjustable Single Resistor

Low Dropout Regulator

DescripTion

The

3080-1

is a 1.1A low dropout linear regulator that

incorporates an internal ballast resistor to allow direct

paralleling of devices without the need for PC board trace

resistors. The internal ballast resistor allows multiple de-

vices to be paralleled directly on a surface mount board

for higher output current and power dissipation while

keeping board layout simple and easy. The device brings

out the collector of the pass transistor to allow low dropout

operation—down to 350mV—when used with multiple

input supplies.

The LT3080-1 is capable of supplying a wide output volt-

age range. A reference current through a single resistor

programs the output voltage to any level between zero

and 36V. The LT3080-1 is stable with 2.2µF of ceramic

capacitance on the output, not requiring additional ESR

as is common with other regulators.

Internal protection includes current limiting and thermal

limiting. The LT3080-1 regulator is offered in the 8-lead

MSOP (with an Exposed Pad for better thermal charac-

teristics) and 3mm

3mm DFN packages.

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and VLDO

and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

Internal Ballast Resistor Permits Direct

Connection to Power Plane for Higher Current

and Heat Spreading

Output Current: 1.1A

Single Resistor Programs Output Voltage

1% Initial Accuracy of SET Pin Current

Output Adjustable to 0V

Low Output Noise: 40µV

RMS

(10Hz to 100kHz)

Wide Input Voltage Range: 1.2V to 36V

Low Dropout Voltage: 350mV

<0.001%/ V Line Regulation

Minimum Load Current: 0.5mA

Stable with 2.2µF Minimum Ceramic Output Capacitor

Current Limit with Foldback and Overtemperature

Protected

Available in 8-Lead MSOP and 3mm

3mm DFN

applicaTions

High Current All Surface Mount Supply

High Efficiency Linear Regulator

Post Regulator for Switching Supplies

Low Parts Count Variable Voltage Supply

Low Output Voltage Power Supplies

Typical applicaTion

Paralleling Regulators

CONTROL

LT3080-1

N = 13250

Offset Voltage Distribution

–

SET

4.8V TO 28V

CONTROL

LT3080-1

25m

OUT*

1µF

SET

–

25m

OUT*

OUT

3.3V

2.2A

10µF

*OUTPUTS CAN BE

DIRECTLY MOUNTED

TO POWER PLANE

–2

–1

DISTRIBUTION (mV)

30801 TA01b

165k

30801 TA01

30801fc

For more information

www.linear.com/LT3080-1

LT3080-1

absoluTe maximum raTings

(Note 1) All Voltages Relative to V

OUT

CONTROL

Pin Voltage ....................................40V, –0.3V

IN Pin Voltage ................................................40V, –0.3V

SET Pin Current (Note 7) ..................................... ±10mA

SET Pin Voltage (Relative to OUT) .........................±0.3V

Output Short-Circuit Duration .......................... Indefinite

Operating Junction Temperature Range (Notes 2, 10)

E-, I-grades ........................................ –40°C to 125°C

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

Lead Temperature (Soldering, 10 sec)

MS8E Package Only.......................................... 300°C

pin conFiguraTion

TOP VIEW

OUT 1

OUT 2

OUT 3

SET 4

OUT

CONTROL

TOP VIEW

OUT

SET

OUT

CONTROL

MS8E PACKAGE

8-LEAD PLASTIC MSOP

JMAX

= 125°C,

= 60°C/W,

= 10°C/W

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

DD PACKAGE

8-LEAD (3mm × 3mm) PLASTIC DFN

JMAX

= 125°C,

= 64°C/W,

= 3°C/W

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

orDer inFormaTion

LEAD FREE FINISH

LT3080EDD-1#PBF

LT3080IDD-1#PBF

LT3080EMS8E-1#PBF

LT3080IMS8E-1#PBF

LEAD BASED FINISH

LT3080EDD-1

LT3080IDD-1

LT3080EMS8E-1

LT3080IMS8E-1

TAPE AND REEL

LT3080EDD-1#TRPBF

LT3080IDD-1#TRPBF

LT3080EMS8E-1#TRPBF

LT3080IMS8E-1#TRPBF

TAPE AND REEL

LT3080EDD-1#TR

LT3080IDD-1#TR

LT3080EMS8E-1#TR

LT3080IMS8E-1#TR

PART MARKING*

LDPM

LTDPN

PART MARKING*

LDPM

LTDPN

PACKAGE DESCRIPTION

8-Lead (3mm × 3mm) Plastic DFN

8-Lead Plastic MSOP

PACKAGE DESCRIPTION

8-Lead (3mm × 3mm) Plastic DFN

8-Lead Plastic MSOP

TEMPERATURE RANGE

–40°C to 125°C

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.

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/

30801fc

For more information

www.linear.com/LT3080-1

LT3080-1

elecTrical characTerisTics

PARAMETER

SET Pin Current

Output Offset Voltage (V

OUT

– V

SET

)

Load Regulation

SET

∆I

SET

∆V

∆I

SET

∆V

CONDITIONS

= 1V,

≥ 1V,

CONTROL

= 2.0V, I

LOAD

= 1mA, T

= 25°C

CONTROL

≥ 2.0V, 1mA ≤ I

LOAD

≤ 1.1A (Note 9)

The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T

= 25°C.

MIN

9.90

9.80

–2

–3.5

–0.1

27.5

TYP

MAX

10.10

10.20

3.5

0.5

500

1.6

200

500

UNITS

µA

nA/V

mV/V

µA

µV

RMS

%/W

= 1V, V

CONTROL

= 2V, I

OUT

= 1mA

∆I

LOAD

= 1mA to 1.1A

∆I

LOAD

= 1mA to 1.1A (Note 8)

∆I

LOAD

= 1mA to 1.1A (Note 8)

= 1V to 22V,

CONTROL

=1V to 22V,

CONTROL

=1V to 22V,

LOAD

=1mA

LOAD

=1mA

Line Regulation (Note 9)

Minimum Load Current (Notes 3, 9)

CONTROL

Dropout Voltage (Note 4)

CONTROL Pin Current (Note 5)

Current Limit (Note 9)

0.1

0.003

300

1.2

1.35

100

350

1.1

1.4

0.003

= V

CONTROL

= 10V

= V

CONTROL

= 22V

LOAD

= 100mA

LOAD

= 1.1A

LOAD

= 100mA

LOAD

= 1.1A

LOAD

= 100mA

LOAD

= 1.1A

= 5V, V

CONTROL

= 5V, V

SET

= 0V, V

OUT

= –0.1V

LOAD

= 1.1A, 10Hz ≤ f ≤ 100kHz, C

OUT

= 10µF, C

SET

= 0.1µF

f = 120Hz, V

RIPPLE

= 0.5V

P-P

, I

LOAD

= 0.2A, C

SET

= 0.1µF, C

OUT

= 2.2µF

f = 10kHz

f = 1MHz

10ms Pulse

Error Amplifier RMS Output Noise (Note 6)

Ripple Rejection

Reference Current RMS Output Noise (Note 6) 10Hz ≤ f ≤ 100kHz

Thermal Regulation, I

SET

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:

Unless otherwise specified, all voltages are with respect to V

OUT

The LT3080-1 is tested and specified under pulse load conditions such

that T

≅

. The LT3080E-1 is tested at T

= 25°C. Performance of the

LT3080E-1 over the full –40°C and 125°C operating temperature range

is assured by design, characterization, and correlation with statistical

process controls. The LT3080I-1 is guaranteed over the full –40°C to

125°C operating junction temperature range.

Note 3:

Minimum load current is equivalent to the quiescent current of

the part. Since all quiescent and drive current is delivered to the output

of the part, the minimum load current is the minimum current required to

maintain regulation.

Note 4:

For the LT3080-1, dropout is caused by either minimum control

voltage (V

CONTROL

) or minimum input voltage (V

). Both parameters are

specified with respect to the output voltage. The specifications represent the

minimum input-to-output differential voltage required to maintain regulation.

Note 5:

The CONTROL pin current is the drive current required for the

output transistor. This current will track output current with roughly a 1:60

ratio. The minimum value is equal to the quiescent current of the device.

Note 6:

Output noise is lowered by adding a small capacitor across the

voltage setting resistor. Adding this capacitor bypasses the voltage setting

resistor shot noise and reference current noise; output noise is then equal

to error amplifier noise (see the Applications Information section).

Note 7:

SET pin is clamped to the output with diodes. These diodes only

carry current under transient overloads.

Note 8:

Load regulation is Kelvin sensed at the package.

Note 9:

Current limit may decrease to zero at input-to-output differential

voltages (V

– V

OUT

) greater than 22V. Operation at voltages for both IN

and V

CONTROL

is allowed up to a maximum of 36V as long as the difference

between input and output voltage is below the specified differential

– V

OUT

) voltage. Line and load regulation specifications are not

applicable when the device is in current limit.

Note 10:

This IC includes over-temperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperature will exceed the maximum operating junction temperature

when over-temperature protection is active. Continuous operation above

the specified maximum operating junction temperature may impair device

reliability.

30801fc

For more information

www.linear.com/LT3080-1

LT3080-1

Typical perFormance characTerisTics

Set Pin Current

10.20

10.15

SET PIN CURRENT (µA)

OFFSET VOLTAGE (mV)

10.10

10.05

10.00

9.95

9.90

9.85

9.80

–50 –25

25 50 75 100 125 150

TEMPERATURE (°C)

30801 G01

Set Pin Current Distribution

N = 13792

2.0

1.5

1.0

0.5

–0.5

–1.0

–1.5

9.80

10.00

10.20

9.90

10.10

SET PIN CURRENT DISTRIBUTION (µA)

30801 G02

Offset Voltage (V

OUT

– V

SET

)

= 1mA

–2.0

–50 –25

25 50 75 100 125 150

TEMPERATURE (°C)

30801 G03

Offset Voltage Distribution

N = 13250

1.00

0.75

OFFSET VOLTAGE (mV)

0.50

0.25

– 0.25

– 0.50

– 0.75

–2

–1

DISTRIBUTION (mV)

30801 G04

Offset Voltage

LOAD

= 1mA

–5

OFFSET VOLTAGE (mV)

–10

–15

–20

–25

–30

–35

–40

INPUT-TO-OUTPUT VOLTAGE (V)

36*

30801 G05

Offset Voltage

= 25°C

= 125°C

–1.00

–45

0.2

0.8

0.6

LOAD CURRENT (A)

0.4

1.0

1.2

*SEE NOTE 9 IN ELECTRICAL

CHARACTERISTICS TABLE

30801 G06

Load Regulation

CHANGE IN OFFSET VOLTAGE WITH LOAD (mV)

–5

–10

–15

–20

–25

–30

–35

–40

–45

CHANGE IN REFERENCE CURRENT

CHANGE IN OFFSET VOLTAGE

OUT

– V

SET

)

∆I

LOAD

= 1mA TO 1.1A

– V

OUT

= 2V

–10

Minimum Load Current

0.8

MINIMUM IN VOLTAGE (V

– V

OUT

) (mV)

MINIMUM LOAD CURRENT (mA)

0.7

0.6

0.5

0.4

0.3

0.2

0.1

–50 –25

25 50 75 100 125 150

TEMPERATURE (°C)

30801 G08

Dropout Voltage

(Minimum IN Voltage)

400

350

300

250

200

150

100

0.2

0.8

0.6

OUTPUT CURRENT (A)

0.4

1.0

1.2

= 125°C

CHANGE IN REFERENCE CURRENT WITH LOAD (nA)

IN, CONTROL

– V

OUT

= 36V*

= 25°C

IN, CONTROL

– V

OUT

= 1.5V

–50

–50 –25

–20

25 50 75 100 125 150

TEMPERATURE (°C)

30801 G07

*SEE NOTE 9 IN ELECTRICAL

CHARACTERISTICS TABLE

30801 G09

30801fc

For more information

www.linear.com/LT3080-1

LT3080-1

Typical perFormance characTerisTics

MINIMUM CONTROL VOLTAGE (V

CONTROL

– V

OUT

) (V)

400

MINIMUM IN VOLTAGE (V

– V

OUT

) (mV)

350

300

250

200

150

100

–50 –25

25 50 75 100 125 150

TEMPERATURE (°C)

30801 G10

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

MINIMUM CONTROL VOLTAGE (V

CONTROL

– V

OUT

) (V)

Dropout Voltage

(Minimum IN Voltage)

LOAD

= 1.1A

Dropout Voltage

(Minimum V

CONTROL

Pin Voltage)

= –50°C

Dropout Voltage

(Minimum V

CONTROL

Pin Voltage)

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

–50 –25

25 50 75 100 125 150

TEMPERATURE (°C)

30801 G12

LOAD

= 1.1A

= 125°C

= 25°C

LOAD

= 500mA

LOAD

= 1mA

LOAD

= 100mA

0.8

0.6

OUTPUT CURRENT (A)

0.4

1.0

1.2

30801 G11

Current Limit

1.6

1.4

CURRENT LIMIT (A)

1.2

1.0

0.8

0.6

0.4

0.2

= 7V

OUT

= 0V

25 50 75 100 125 150

TEMPERATURE (°C)

30801 G13

Current Limit

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

INPUT-TO-OUTPUT DIFFERENTIAL (V)

36*

OUTPUT VOLTAGE

DEVIATION (mV)

= 25°C

–20

–40

LOAD CURRENT (mA)

400

300

200

100

Load Transient Response

OUT

= 1.5V

SET

= 0.1µF

= V

CONTROL

= 3V

OUT

= 10µF CERAMIC

OUT

= 2.2µF CERAMIC

–50 –25

10 15 20 25 30 35 40 45 50

TIME (µs)

30801 G15

*SEE NOTE 9 IN ELECTRICAL

CHARACTERISTICS TABLE

30801 G14

Load Transient Response

150

OUTPUT VOLTAGE

DEVIATION (mV)

OUTPUT VOLTAGE

DEVIATION (mV)

100

–50

–100

LOAD CURRENT (A)

1.2

0.9

0.6

0.3

IN/CONTROL

VOLTAGE (V)

= V

CONTROL

= 3V

OUT

= 1.5V

OUT

= 10µF CERAMIC

SET

= 0.1µF

10 15 20 25 30 35 40 45 50

TIME (µs)

30801 G16

–25

–50

Line Transient Response

INPUT VOLTAGE (V)

OUTPUT VOLTAGE (V)

2.0

1.5

1.0

0.5

Turn-On Response

OUT

= 1.5V

LOAD

= 10mA

OUT

= 2.2µF

CERAMIC

SET

= 0.1µF

CERAMIC

OUT

= 2.2µF CERAMIC

SET

= 100k

SET

= 0

LOAD

= 1

4 5 6

TIME (µs)

10 20 30 40 50 60 70 80 90 100

TIME (µs)

30801 G17

30801 G18

30801fc

For more information

www.linear.com/LT3080-1

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LT3080IDD-1

LT3080IDD-1概述

LT3080IDD-1规格参数

LT3080IDD-1文档预览

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