LM337T datasheet(6/22 Pages) TI1

No de pièce	LM337T

Description	3-Terminal Adjustable Negative Regulators

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LM137, LM337-N

SNVS778D – MAY 1999 – REVISED APRIL 2013

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LM137, VOUT = −10V

VIN − VOUT = −40V

IIL = 0A → 0.25A → 0A

Vertical sensitivity, 5 mV/div

Figure 3.

In Figure 3, a typical LM137's output drifts only 3 mV (or 0.03% of VOUT = −10V) when a 10W pulse is applied for

10 ms. This performance is thus well inside the specification limit of 0.02%/W × 10W = 0.2% max. When the

10W pulse is ended, the thermal regulation again shows a 3 mV step at the LM137 chip cools off. Note that the

load regulation error of about 8 mV (0.08%) is additional to the thermal regulation error. In Figure 4, when the

10W pulse is applied for 100 ms, the output drifts only slightly beyond the drift in the first 10 ms, and the thermal

error stays well within 0.1% (10 mV).

LM137, VOUT = −10V

VIN − VOUT = −40V

IL = 0A → 0.25A → 0A

Horizontal sensitivity, 20 ms/div

Figure 4.

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