FAN1537

PRODUCT SPECIFICATION

4

REV. 1.1.1 3/20/02

Application Hints

External Capacitors

Like any low-dropout regulator, the FAN1537 requires

external capacitors for stability.

Input Capacitor

A Tantalum input capacitor of 22µF is recommended. This

capacitor must be located at a distance of no more than 0.5"

from the input pin of the device and returned to a clean ana-

log ground.

Output Capacitor

The FAN1537 is designed to work with Ceramic or Tantalum

load capacitors.

A value of 22µF is recommended on each output, but the

value can be reduced to 10µF to save space.

Additional capacitance can be added without limit for better

performance, e.g. improved transient response and lower

noise.

When a Ceramic multilayer capacitor is used, the X7R

dielectric is recommended which holds the capacitance

within ±15%. The output capacitor should be located not

more than 0.5" from the output pins of the device and

returned to a clean analog ground.