CM1117

2007/05/02 Rev1.9

Champion Microelectronic Corporation

Page 4

Note 1:

Typical Values represent the most likely parametric norm.

Note 2:

All limits are guaranteed by testing or statistical analysis.

Note 3:

Load and line regulation are measured at constant junction room temperature.

Note 4:

The dropout voltage is the input/output differential at which the circuit ceases to regulate against further reduction in input

Note 5:

The minimum output current required to maintain regulation.

Note 6:

Minimum pad size of 0.038in

2

Application Hints

Like any linear voltage regulator, CM1117 requires

external capacitors to ensure stability. The external

capacitors must be carefully selected to ensure

performance.

Input Capacitor

An input capacitor of at least 10μF is required.

Ceramic or Tantalum can be used. The value can be

increase without upper limit.

Output Capacitor

An output capacitor is required for stability. It must be

minimum value is 22μF but may be increase without

limit.

Thermal Considerations

It is important that the thermal limit of the package is

not exceeded.

The CM1117 has built-in thermal

protection. When the thermal limit is exceeded, the IC

The power dissipation for a given application can be

calculated as following: