LT3021 LINER [Linear Technology], LT3021 Datasheet - Page 13

• Manufacturer Part Number: LT3021
• Description: 500mA, Low Voltage, Very Low Dropout Linear Regulator
• Manufacturer: LINER [Linear Technology]

APPLICATIO S I FOR ATIO
If the LT3021 is powered by a battery mounted in close
proximity on the same circuit board, a 3.3µF input capaci-
tor is sufficient for stability. However, if the LT3021 is
powered by a distant supply, use a larger value input
capacitor following the guideline of roughly 1µF (in addi-
tion to the 3.3µF minimum) per 8 inches of wire length. As
power supply output impedance may vary, the minimum
input capacitance needed to stabilize the application may
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also vary. Extra capacitance may also be placed directly on
the output of the power supply; however, this will require
an order of magnitude more capacitance as opposed to
placing extra capacitance in close proximity to the LT3021.
Furthermore, series resistance may be placed between the
supply and the input of the LT3021 to stabilize the appli-
cation; as little as 0.1Ω to 0.5Ω will suffice.
LT3021-1.5/LT3021-1.8
LT3021/LT3021-1.2/
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