Datasheet Linear Technology LT1963AET-2.5#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LT1963A
Artikelnummer	LT1963AET-2.5#PBF

1,5 A, rauscharme LDO-Regler mit schnellem Einschwingverhalten

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PDF, 552 Kb, Sprache: en, Datei hochgeladen: Sep 2, 2017, Seiten: 28
1.5A, Low Noise, Fast Transient Response LDO Regulators

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Verpackung

Package	TO-220
Package Code	T
Package Index	05-08-1421 (Std)

Parameter

Design Tools	LTspice File
Discrete Pass Element	no
Dropout Voltage	0.34 V
Export Control	no
Features	Shutdown
Ishutdown	.01 µA
Isupply	1 mA
Max Junction Temp	150 Deg
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	1.5 A
Output Voltage	Adj, 1.5, 1.8, 2.5, 3.3
PSRR	63 dB
RMS Noise	40 µV
Theta JA	30В°C/W (Q), 50В°C/W (T), 38В°C/W (FE), 50В°C/W (ST), 70В°C/W (S8)
Type	PNP
Vin Max	20 V
Vin Min	2.1 V
Vout Max	20 V
Vout Min	1.21 V

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RoHS

Compliant

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LT1963A Series

Anwendungshinweise

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Performance Verification of Low Noise, Low Dropout Regulators &mdash AN83
PDF, 542 Kb, Datei veröffentlicht: Mar 1, 2000
In an increasing trend, telecommunications, networking, audio and instrumentation require low noise power supplies. In particular, there is interest in low noise, low dropout linear regulators (LDO). Establishing and specifying LDO dropout performance is relatively easy to do. Verifying that a regulator meets dropout specification is similarly straightforward. Accomplishing the same missions for noise and noise testing is considerably more involved. The noise bandwidth of interest must be called out, along with operating conditions. Low noise performance is affected by numerous subtleties; changes in operating conditions can cause unwelcome surprises. Because of this, LDO noise must be quoted under specified operating and bandwidth conditions to be meaningful. Failure to observe this precaution results in misleading data and erroneous conclusions. This Application Note suggests a noise testing method, details its implementation and presents results.
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Application Note 83
March 2000
Performance Verification of Low Noise,
Low Dropout Regulators
Silence of the Amps
Jim Williams and Todd Owen, Linear Technology Corporation
Introduction
In an increasing trend, telecommunications, networking,
audio and instrumentation require low noise power supplies. In particular, there is interest in low noise, low
dropout linear regulators (LDO). These components power
noise-sensitive circuitry, circuitry that contains noisesensitive elements or both. Additionally, to conserve power,
particularly in battery driven apparatus such as cellular
telephones, the regulators must operate with low input-tooutput voltages.1 Devices presently becoming available
meet these requirements (see separate section, вЂњA Family
of 20ВµVRMS Noise, Low Dropout RegulatorsвЂќ).
Noise and Noise Testing
Establishing and specifying LDO dropout performance is
relatively easy to do. Verifying that a regulator meets
dropout specification is similarly straightforward. Accomplishing the same missions for noise and noise testing is
considerably more involved. The noise bandwidth of interest must be called out, along with operating conditions.
Operating conditions can include regulator input and
output voltage, load, assorted discrete components, etc.
Low noise performance is effected by numerous subtleties; changes in operating conditions can cause unwelcome surprises.2 Because of this, LDO noise must be …

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Serie: LT1963A (65)

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Herstellerklassifikation

Power Management > LDO Linear Regulators > Positive Linear Regulators (LDO) | Extended Temperature (H & MP) Linear Regulators

Andere Namen:

LT1963AET-2.5PBF, LT1963AET-2.5 PBF, LT1963AET2.5#PBF, LT1963AET 2.5#PBF