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LTC1261L

Features: Regulated Negative Voltage from aSingle Positive Supply REG Pin Indicates Output is in Regulation Adjustable or Fixed Output Voltages Output Regulation: ±3.5% Supply Current: 650µA Typ Shutdown Mode Drops Supply Current to 5µA Up to 20mA Output Current Requires Only Three or...

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LTC1261L: Features: Regulated Negative Voltage from aSingle Positive Supply REG Pin Indicates Output is in Regulation Adjustable or Fixed Output Voltages Output Regulation: ±3.5% Supply Current: 650µA ...

LTC1261L Data Sheet

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Part Number:
LTC1261L
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Regulated Negative Voltage from aSingle Positive Supply
REG Pin Indicates Output is in Regulation
Adjustable or Fixed Output Voltages
Output Regulation: ±3.5%
Supply Current: 650µA Typ
Shutdown Mode Drops Supply Current to 5µA
Up to 20mA Output Current
Requires Only Three or Four External Capacitors
Available in MS8 and SO-8 Packages


Application

GaAs FET Bias Generators
Negative Supply Generators
Battery-Powered Systems
Single Supply Applications


Pinout

Connection Diagram


Specifications

Supply Voltage (Note 2) ........................................  5.5V
Output Voltage (Note 3) ........................  0.3V to 5.3V
Total Voltage, VCC to VOUT (Note 2) ...................  10.8V
SHDN Pin ..................................   0.3V to (VCC + 0.3V)
REG Pin ...................................................   0.3V to 6V
ADJ Pin..........................  (VOUT 0.3V) to (VCC + 0.3V)
Output Short-Circuit Duration .......................  Indefinite
Commercial Temperature Range ............  0°C to 70°C
Extended Commercial Operating
Temperature Range (Note 4) ............  40°C to 85°C
Storage Temperature Range ............ 65°C to 150°C
Lead Temperature (Soldering, 10 sec) ..............  300°C


Description

The LTC®1261L is a switched-capacitor voltage inverterdesigned to provide a regulated negative voltage from asingle positive supply. It operates from asingle 2.7V to 5.25V supply and provides an adjustableoutput voltage from 1.23V to 5V. The LTC1261L-4/LTC1261L-4.5 needs a single 4.5V to 5.25V supply andprovides a fixed output voltage of 4V to 4.5V respec-tively. Three external capacitors are required: a 0.1µFflying capacitor and an input and output bypass capaci-tors. An optional compensation capacitor at ADJ (COMP)can be used to reduce the output voltage ripple.

Each version of the LTC1261L will supply up to 20mAoutput current with guaranteed output regulation of ±3.5%.It includes an open-drain REG output thatpulls low when the output is within 5% of the set value.

Quiescent current is typically 650µA when operating and5µA in shutdown.

The LTC1261L is available in  8-pin MSOP and SO pack-ages.




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