ACE575U

350mA, Micropower, Very Low Dropout Linear Regulator

VER 1.1

4

Typical Application

ACE575U Output Voltage Setting

The output voltage of the ACE575U adjustable regulator is programmed using an external resistor divider

as shown in Figure 2. The output voltage is calculated using:

Resistors R1 and R2 should be chosen for approximately 3-

5μA divider current. Lower value resistors can

be used but offer no inherent advantage and waste more power. Higher values should be avoided, as

leakage currents at FB increase the output voltage error. The recommended design procedure is to

ch

oose R2=200kΩ to set the divider current at 5μA and then calculate R1 using: