LD6806F datasheet(11/36 Pages) PHILIPS

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LD6806_SER

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Product data sheet

Rev. 3 — 9 December 2011

11 of 36

NXP Semiconductors

LD6806 series

Ultra low-dropout regulator, low noise, 200 mA

9.4 Noise

Output noise voltage of an LDO circuit is given as noise density or RMS output noise

voltage over a defined range of frequencies (10 Hz to 100 kHz). Permanent conditions are

a constant output current and a ripple-free input voltage. The output noise voltage is

generated by the LDO regulator.

(1) 0 mA

(2) 1 mA

(3) 50 mA

(4) 100 mA

(5) 150 mA

(6) 200 mA

(1) 0 mA

(2) 1 mA

(3) 50 mA

(4) 100 mA

(5) 150 mA

(6) 200 mA

Fig 15. Noise density for LD6806CX4/25H

Fig 16. Noise density for LD6806CX4/36H

001aan941

10-1

10-2

105

104

102

103

(1)

(2)

(3)

(4)

(5)

(6)

noise

(μV/√Hz)

frequency (Hz)

001aao104

10-1

noise

(μV/√Hz)

10-2

frequency (Hz)

105

104

102

103

(1)

(2)

(3)

(4)

(5)

(6)

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