LT1764/ LINER [Linear Technology], LT1764/ Datasheet

LT1764/

Manufacturer Part Number

LT1764/

Description

45V VIN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator

Manufacturer

LINER [Linear Technology]

Datasheet

1.LT1764.pdf (26 pages)

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applicaTions

Typical applicaTion

FeaTures

Input Voltage Range: 1.6V to 45V

Output Current: 100mA

Quiescent Current: 40µA

Dropout Voltage: 300mV

Low Noise: 30µV

Adjustable Output: V

Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V

Output Tolerance: ±2% Over Line, Load and

Temperature

Single Capacitor Soft-Starts Reference and Lowers

Output Noise

Shutdown Current: < 1µA

Reverse Battery Protection

Current Limit Foldback Protection

Thermal Limit Protection

8-Lead 2mm × 2mm × 0.75mm DFN and 8-Lead

ThinSOT

Battery-Powered Systems

Automotive Power Supplies

Industrial Power Supplies

Avionic Power Supplies

Portable Instruments

3V TO

45V

™

Packages

1µF

2.5V Low Noise Regulator

RMS

SHDN

GND REF/BYP

LT3060-2.5

REF

(10Hz to 100kHz)

= 600mV

OUT

ADJ

10nF

3060 TA01

10µF

2.5V AT 100mA

30µV

OUT

RMS

NOISE

DescripTion

The LT

(LDO) linear regulators that operate over a 1.6V to 45V

input supply range. The devices supply 100mA of output

current with a typical dropout voltage of 300mV. A single

external capacitor provides programmable low noise refer-

ence performance and output soft-start functionality. The

LT3060’s quiescent current is merely 40μA and provides

fast transient response with a minimum 2.2μF output

capacitor. In shutdown, quiescent current is less than 1μA

and the reference soft-start capacitor is reset.

The LT3060 regulators optimize stability and transient

response with low ESR, ceramic output capacitors.

The regulators do not require the addition of ESR as is

common with other regulators.

Internal protection circuitry includes reverse-battery

protection, reverse-output protection, reverse-current

protection, current limit with foldback and thermal

shutdown. The LT3060 series are available in fixed output

voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V, and as an

adjustable voltage regulator with an output voltage range

from the 600mV reference to 44.5V. The LT3060 regulators

are offered in the thermally enhanced 8-lead TSOT-23 and

8-lead (2mm × 2mm × 0.75mm) DFN packages.

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

ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property

of their respective owners.

Dropout, Linear Regulator

3060 series are micropower, low dropout voltage

Low Noise, 100mA Low

45V V

350

300

250

200

150

100

= 25°C

20 30 40

Dropout Voltage

OUTPUT CURRENT (mA)

, Micropower,

LT3060 Series

60 70 80 90 100

3060 TA02

3060fa

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