This is information on a product in full production.

May 2013

DocID024452 Rev 1

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SEA01

Constant voltage and current controller with online digital trimming

Datasheet

Figure 1. Internal schematic

Figure 2. Pin connections (top view)

Features

• Online digital trimming for the highest end-

product accuracy in voltage and current control

• Automatic operation eliminates manual

intervention in the production line

• Simple and robust trimming protocol and

storage

• Redundant OTP (first and second trimming)

• Extended operating voltage range

• Very low quiescent current

• Offered in an SO8 package

Applications

• SMPS requiring accurate voltage and current

regulation

• AC-DC adapters

• Battery chargers

Description

SEA01 is a highly integrated solution for SMPS

applications requiring precise voltage and current

regulation.

The device integrates two voltage references, two

op-amps (with open-drain outputs), a low-side

current sensing circuit and an online digital

trimming machine.

amp, is the core of the voltage control loop.

make up the current control loop. The embedded

digital trimming allows the user, through software,

of the end product, compensating the tolerance of

the external components and the error due to

their discretized values. Redundant OTP gives

the user a second chance to change the values

stored in the non-volatile memory of the IC during

the first trimming process.

This feature allows having the highest end-

product accuracy of voltage and current control

without the use of external discrete components

or manual intervention.

SO8

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