Power Management Inductorless (Charge Pump) DC/DC Converters Regulated Inverting Charge Pumps

LTC1983 - 100mA Regulated Charge-Pump Inverters in ThinSOT

Features

  • Fixed Output Voltages: -3V, -5V or Low Noise VIN to -VIN Inverted Output
  • ±4% Output Voltage Accuracy
  • Low Quiesient Current: 25µA
  • 100mA Output Current Capability
  • 2.3V to 5.5V Operating Voltage Range
  • Internal 900kHz Oscillator
  • "Zero Current" Shutdown
  • Short-Circuit and Over-Temperature Protected
  • Low Profile (1mm) ThinSOT™ Package

Typical Application

LTC1983 Typical Application
LTC1983 Typical Application

Description

The LTC1983-3 and LTC1983-5 are inverting charge pump DC/DC converters that produce negative regulated outputs. The parts require only three tiny external capacitors and can provide up to 100mA of output current. The devices can operate in open loop mode (creating a -VIN supply) or regulated output mode depending on the input supply voltage and the output current.

The LTC1983-3/LTC1983-5 have many useful features for portable applications including very low quiescent current (25µA typical) and a zero current shutdown mode programmed through the SHDN pin.

The LTC1983-3/LTC1983-5 are over-temperature and short-circuit protected. The parts are available in a 6-pin low profile (1mm) ThinSOT package.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

ThinSOT

LTC1983 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC1983ES6-3 SOT 6 E $2.13 View
LTC1983ES6-3#PBF SOT 6 E $2.13 View
LTC1983ES6-3#TR SOT 6 E $2.13 $1.81 View
LTC1983ES6-3#TRM SOT 6 E $2.13 $1.83 View
LTC1983ES6-3#TRMPBF SOT 6 E $2.13 $1.83 View
LTC1983ES6-3#TRPBF SOT 6 E $2.13 $1.81 View
LTC1983ES6-5 SOT 6 E $2.13 View
LTC1983ES6-5#PBF SOT 6 E $2.13 View
LTC1983ES6-5#TR SOT 6 E $2.13 $1.81 View
LTC1983ES6-5#TRM SOT 6 E $2.13 $1.83 View
LTC1983ES6-5#TRMPBF SOT 6 E $2.13 $1.83 View
LTC1983ES6-5#TRPBF SOT 6 E $2.13 $1.81 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC482A LTC1983ES6-5 | 100mA Regulated Charge-Pump Inverte $75.00
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Applications

  • –3V Generation in Single-Supply Systems
  • Portable Equipment
  • LCD Bias Supplies
  • GaAs FET Bias Supplies

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Related models available in LTspice IV
LTC1983-3
LTC1983-5

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