1

LT1461

Micropower Precision

Low Dropout Series

Voltage Reference Family

s

Trimmed to High Accuracy: 0.04% Max

s

Low Drift: 3ppm/

s

Low Supply Current: 50

s

Temperature Coefficient Guaranteed to 125

°C

s

High Output Current: 50mA Min

s

Low Dropout Voltage: 300mV Max

s

Excellent Thermal Regulation

s

Power Shutdown

s

Thermal Limiting

s

Operating Temperature Range: – 40

°C to 125°C

s

Voltage Options: 2.5V, 3V, 3.3V, 4.096V and 5V

The LT

references that combine very high accuracy and low drift with

low supply current and high output drive. These series

referencesuseadvancedcurvaturecompensationtechniques

to obtain low temperature coefficient and trimmed precision

thin-film resistors to achieve high output accuracy. The

LT1461 family draws only 35

µA of supply current, making

them ideal for low power and portable applications, however

their high 50mA output drive makes them suitable for higher

power requirements, such as precision regulators.

In low power applications, a dropout voltage of less than

300mV ensures maximum battery life while maintaining full

reference performance. Line regulation is nearly immeasur-

able, while the exceedingly good load and thermal regulation

will not add significantly to system error budgets. The

shutdown feature can be used to switch full load currents and

can be used for system power down. Thermal shutdown

protects the part from overload conditions. The LT1461 is

available in 2.5V, 3V, 3.3V 4.096V and 5V options.

s

A/D and D/A Converters

s

Precision Regulators

s

Handheld Instruments

s

Power Supplies

, LTC and LT are registered trademarks of Linear Technology Corporation.

1

µF

2

µF

1461 TA01

LT1461

Basic Connection

0mA

20mA

1mV/DIV

10ms/DIV

1461 TA02

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO