LP5904_15 datasheet(5/23 Pages) TI

Part #	LP5904

Description	Ultra Low Noise, 200 mA Linear Regulator for RF/Analog Circuits - Requires No Bypass Capacitor

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Manufacturer	TI [Texas Instruments]

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OUT

IN

A special integrated filter

for noise suppression

Bandgap

1.2V

FILTER

REFERENCE

VREFC

Cf

Rf

VEN

280W

SVA-30110406

LP5904

www.ti.com

SNVS637G – MARCH 2011 – REVISED APRIL 2013

ELECTRICAL CHARACTERISTICS

(1)(2) (continued)

Limits in standard typeface are for TA = 25°C. Limits in boldface type apply over the full operating junction temperature range

(–40°C

≤ TJ ≤ +125°C). Unless otherwise noted, specifications apply to the LP5904 Typical Application Circuit with: VIN = VOUT

(NOM) + 1.0V, VEN = 1.2V, CIN = 1.0 µF, COUT = 1.0 µF, IOUT = 1.0 mA.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TRANSIENT CHARACTERISTICS

VIN = (VOUT(NOM) + 1.0V) to (VOUT(NOM) + 1.6V) in 30 µs,

–2

IOUT = 1mA

Line Transient(10)

mV

VIN = (VOUT(NOM) + 1.6V) to (VOUT(NOM) + 1.0V) in 30 µs,

2

IOUT = 1mA

ΔVOUT

IOUT = 1mA to 200 mA in 10 µs

–50

Load Transient(10)

mV

IOUT = 200 mA to 1mA in 10 µs

50

Overshoot on Startup(10)

Stated as a percentage of nominal VOUT

2

%

Turn-on Time

To 95% of VOUT(NOM)

85

300

µs

(10) This specification is ensured by design.

OUTPUT AND INPUT CAPACITORS

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN(1)

TYP

MAX

UNIT

CIN

Input Capacitance(2)

0.5

1.0

Capacitance for stability

µF

COUT

Output Capacitance(2)

0.5

1.0

10

ESR

Output/Input Capacitance(2)

5

500

m

Ω

(1)

Note: The minimum capacitance should be greater than 0.5

μF over the full range of operating conditions. The capacitor tolerance

should be 30% or better over the full temperature range. The full range of operating conditions for the capacitor in the application should

be considered during device selection to ensure this minimum capacitance specification is met. X7R capacitors are recommended

however capacitor types X5R, Y5V and Z5U may be used with consideration of the application and conditions.

(2)

This specification is ensured by design.

BLOCK DIAGRAM

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