LT3050IDDB Linear Technology Corporation, LT3050IDDB Datasheet

LT3050IDDB

Manufacturer Part Number

LT3050IDDB

Description

Manufacturer

Linear Technology Corporation

Datasheets

1.LT3050.pdf (20 pages)

2.LT3050IDDB.pdf (20 pages)

Specifications of LT3050IDDB

Case

DFN

Date_code

09+

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LT3050IDDB

Manufacturer:

Quantity:

10 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LT3050IDDB-3.3

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Quantity:

10 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LT3050IDDB-3.3#PBF

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Quantity:

341

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LT3050IDDB-5

Manufacturer:

Quantity:

10 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LT3050IDDB-5#PBF

Manufacturer:

Quantity:

1 579

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APPLICATIONS

FEATURES

TYPICAL APPLICATION

12V

Output Current: 100mA

Dropout Voltage: 340mV

Input Voltage Range: 1.6V to 45V

Programmable Precision Current Limit: ±5%

Programmable Minimum I

Output Current Monitor: 1/100

Fault Indicator: Current Limit, Minimum I

Thermal Limit

Low Noise: 30μV

Adjustable Output (V

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

Stable with Low ESR, Ceramic Output Capacitors

(2.2μF minimum)

Shutdown Current: <1μA

Reverse-Battery, Reverse-Output and

Reverse-Current Protection

Thermal Limit Protection

12-Lead 3mm × 2mm DFN and MSOP Packages

Protected Antenna Supplies

Automotive Telematics

Industrial Applications (Trucks, Forklifts, etc.)

High Reliability Applications

5V Supply with 100mA Precision Current Limit, 10mA I

10nF

1μF

0.1μF

1.15k

(THRESHOLD = 100mA)

11.3k

(THRESHOLD = 10mA)

RMS

REF

(10Hz to 100kHz)

120k

= V

OUT

OUT(MIN)

SHDN

FAULT

Linear Regulator With Precision Current

Monitor

MAX

MIN

of I

LT3050

GND

OUT

= 0.6V)

REF/BYP

OUT

MON

ADJ

OUT

442k

60.4k

(ADC FULL SCALE = 3V)

MIN

10nF

Limit And Diagnostic Functions

DESCRIPTION

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.

The LT

voltage (LDO) linear regulator. The device supplies 100mA

of output current with a dropout voltage of 340mV. A 10nF

bypass capacitor reduces output noise to 30μV

10Hz to 100kHz bandwidth and soft-starts the reference.

The LT3050’s ±45V input voltage rating combined with its

precision current limit and diagnostic functions make the IC

an ideal choice for robust, high reliability applications.

A single resistor programs the LT3050’s current limit, accurate

to ±5% over a wide input voltage and temperature range.

A single resistor programs the LT3050’s minimum output

current monitor, useful for detecting open-circuit conditions.

The current monitor function sources a current equal to

1/100th of output current. A logic FAULT pin asserts low if

the LT3050 is in current limit, operating below its minimum

output current (open-circuit) or is in thermal shutdown.

The LT3050 optimizes stability and transient response

with low ESR ceramic capacitors, requiring a minimum

of 2.2μF. The LT3050 is available as an adjustable device

with an output voltage range down to the 0.6V reference.

The LT3050 is available in the thermally-enhanced 12-Lead

3mm × 2mm DFN and MSOP packages.

3050 TA01

3050 is a micro-power, low noise, low dropout

0.1μF

2.2μF

TO μP ADC

100mA, Low Noise

105

104

103

102

101

100

–75 –50 –25 0 –25 50 75 100 125 150 175

OUT

= 5V

External Current Limit

TEMPERATURE (°C)

IMAX

= 1.15k

LT3050

= 15V

= 12V

= 5.6V

RMS

3050 TA01a

in a

3050f

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