1 Features

? New TL103WB, a pin-compatible upgrade to the

TL103W and TL103WA

? Improved specifications of B version amplifiers:

– Supply range: 3V to 36 V

– Low maximum input offset voltage: ±2mV

(25°C) and ±2.5mV (full temperature)

– Gain bandwidth: 1.2MHz

– Total supply current: 550μA

– EMI rejection: integrated RF and EMI filter

– Temperature range: -40°C to 125°C

? Improved specifications of B version reference:

– Fixed 2.5V reference

– Tight tolerance maximum of 0.44 (25°C) and

1.04 (full temperature)

– Wide sink-current range:

0.2mA (typical) to 100mA

2 Applications

? Battery chargers

? Switch-mode power supplies

? Linear voltage regulation

? Data-acquisition systems

? Precision constant current sink

3 Description

The TL103Wx devices combine the building blocks

of a dual operational amplifier and a fixed voltage

reference – both of which are often used in the control

circuitry of switch-mode and linear power supplies.

OP AMP1 has the non-inverting input internally

tied to a fixed 2.5V reference, while OP AMP2 is

independent, with both inputs uncommitted.

The upgraded TL103WB features improvements

such as a wider supply range (up to 36V), lower

supply current (275 μA/amp) and tighter voltage

regulation. This regulation can be achieved through

low offset voltages for both operational amplifiers

(0.3mV typical) and tight tolerances for the voltage

reference (0.44 at 25°C and 1.04 over operating

temperature range).

The TL103WB has a widened temperature range of

–40°C to 125°C.