LD6806F datasheet(7/36 Pages) PHILIPS

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LD6806_SER

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Product data sheet

Rev. 3 — 9 December 2011

7 of 36

NXP Semiconductors

LD6806 series

Ultra low-dropout regulator, low noise, 200 mA

[1]

VO(nom) = nominal output voltage (device specific).

[2]

The junction temperature must decrease by Tsd(hys) to enable the device after Tsd was reached and the device was disabled.

[3]

LD6806x/xxP only.

Dynamic behavior

All results described in Section 9 are based on measurements of types LD6806CX4xxx

and LD6806Fxxx from the LD6806 product series within Section 6 “Recommended

operating conditions”.

9.1 Dropout

The dropout voltage is defined as the smallest input to output voltage difference at a

specified load current when the regulator operates within its linear region with the pass

transistor functioning as a plain resistor. This means that the input voltage is below the

nominal output voltage value.

A small dropout voltage guaranties lower power consumption and efficiency maximization.

Isc

short-circuit current

pin OUT

600

quiescent current

VEN = 1.4 V; IOUT = 0 mA

100

A

VEN = 1.4V; 1mA  IOUT  200 mA

155

250

A

VEN  0.4 V

0.1

1.0

A

Tsd

shutdown temperature

160

C

Tsd(hys)

shutdown temperature

hysteresis

[2] -20

K

PSRR

power supply rejection ratio

VIN = VO(nom) + 1 V; IOUT = 30 mA;

fripple = 1 kHz

[1] -

55

Vn(o)(RMS)

RMS output noise voltage

bandwidth = 10 Hz to 100 kHz;

CL(ext) =1 F

-30

V

tstartup(reg)

regulator start-up time

VIN = 5.5 V; VOUT = 0.95  VO(nom);

IOUT = 200 mA; CL(ext) =1 F

[1] -

200

s

tsd(reg)

regulator shutdown time

VIN = 5.5 V; CL(ext) =1 F

[3] -300

s

Rpd

pull-down resistance

[3] -100



Table 10.

Electrical characteristics …continued

At recommended input voltages and Tamb = 40 Cto+85 C; voltages are referenced to GND (ground = 0 V);

unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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