(3)

Thermal regulation is defined as the change in output voltage at a time (T) after a change in power dissipation is applied, excluding

load or line regulation effects. Specifications are for a 50-mA load pulse at VIN = 30V, VOUT = 5V (1.25W pulse) for t = 10ms.

(4)

Comparator thresholds are expressed in terms of a voltage differential equal to the nominal reference voltage (measured at VIN –

VOUT = 1V) minus FEEDBACK terminal voltage. To express these thresholds in terms of output voltage change, multiply by the error

amplifier gain = VOUT/VREF = (R1 + R2)/R2. For example, at a programmed output voltage of 5V, the ERROR output is specified to go

low when the output drops by 95mV × 5V/1.2V = 395mV. Thresholds remain constant as a percentage of VOUT (as VOUT is varied), with

the low-output warning occurring at 6% below nominal (typ) and 7.7%(max).

5.6 Timing Requirements (New Chip only)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPGDH

PG delay time rising, time from 92% VOUT to 20%

of PG(1)

40

µs

tPGDL

PG delay time falling, time from 90% VOUT to 80%

of PG(1)

10

µs

(1)

Output Overdrive = 10%.

www.ti.com

LP2951-Q1

SLVSAW6H – JUNE 2011 – REVISED NOVEMBER 2024

Copyright © 2024 Texas Instruments Incorporated

Submit Document Feedback

9

Product Folder Links: LP2951-Q1