2.9

LP5951-1.3

CIN, COUT = 1.0 µF

2.3

TIME (100 µs/DIV)

IL = 150 mA

4.9

LP5951-3.3

CIN = 1.0 µF

COUT = 1.5 µF

4.3

TIME (100 µs/DIV)

IL = 150 mA

0

150

LP5951-1.3

CIN, COUT = 1.0 µF

TIME (50 µs/DIV)

0

150

LP5951-3.3

CIN = 1.0 µF

COUT = 1.5 µF

TIME (50 µs/DIV)

LP5951

SNVS345G – JUNE 2006 – REVISED DECEMBER 2014

www.ti.com

6.8 Output Capacitor, Recommended Specification

PARAMETER

TEST CONDITIONS

MIN(1)

TYP

MAX(1)

UNIT

Capacitance(2)

0.7

1

47

µF

IOUT = 150 mA, VIN = 5 V

COUT

Output capacitance

ESR

0.003

0.300

Ω

(1)

Min and Max limits are ensured by design.

(2)

The capacitor tolerance should be 30% or better over temperature. The full operating conditions for the application should be considered

when selecting a suitable capacitor to ensure that the minimum value of capacitance is always met. Recommended capacitor type is

X7R. However, dependent on application, X5R, Y5V, and Z5U can also be used. The shown minimum limit represents real minimum

capacitance, including all tolerances and must be maintained over temperature and dc bias voltage (see External Capacitors in

Application and Implementation section).

6.9 Typical Characteristics

Unless otherwise specified, CIN = 1 µF ceramic, COUT = 1 µF ceramic, VIN = VOUT(NOM) + 1 V, TA = 25°C; EN pin is tied to VIN.

Figure 1. Load Transient Response

Figure 2. Load Transient Response

Figure 4. Line Transient Response

Figure 3. Line Transient Response

6

Submit Documentation Feedback

Copyright © 2006–2014, Texas Instruments Incorporated

Product Folder Links: LP5951