LR2125 Datasheet, PDF (5/8 Pages) Unisonic Technologies – 300mA SELECTABLE FIXED/ADJUSTABLE LOW DROPOUT LINEAR REGULATOR

LR2125
LINEAR INTEGRATED CIRCUIT
 APPLICATION INFORMATION
Input Capacitor
Value：
Larger than 1µF, at least a 1µF ceramic capacitor
Place：
Be placed near the V_IN very closely
Purpose and Advantage Description：
To prevent the input rail from dropping, this capacitor can provide surge current as while as the circuit’s stepping
load transients.
Output Capacitor
Value：
Larger than 2.2µF
Place：
Be placed at the load and near the GND pin very closely.
Purpose and Advantage Description：
Mainly make sure the circuit’s operating stability. And the large value capacitor also can reduce noise and improve
transient response. Additionally, it can affect power on issue.
COUT(max)
=
87

(0.55
-
0.1155
VOUT
)
Maximum Output Capacitor’s Value (µF) and the Output Voltage (V)’s Value’s Relationship
Maximum Output Capacitor’s Changing Over V_OUT.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 8
QW-R102-038.H