LTC1983 - 100mA Regulated Charge-Pump Inverters in ThinSOT

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.

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

Applications

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

Packaging

Order Information

Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC1983ES6-3#PBF	SOT-23	E	$2.13
LTC1983ES6-3#TRMPBF	SOT-23	E	$2.17	$1.83
LTC1983ES6-3#TRPBF	SOT-23	E	$2.17	$1.81
LTC1983ES6-5#PBF	SOT-23	E	$2.13
LTC1983ES6-5#TRMPBF	SOT-23	E	$2.17	$1.83
LTC1983ES6-5#TRPBF	SOT-23	E	$2.17	$1.81

Demo Boards

Part Number	Description	Price
DC482A	LTC1983ES6-5 \| 100mA Regulated Charge-Pump Inverter, 3V-5.5V Input, -5Vout, Iout up to 100mA Max.	$75.00