SG140-05T/883B 查看數據表（PDF） - Microsemi Corporation

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SG140-05T/883B

Positive Fixed Linear Voltage Regulators

Microsemi Corporation 

SG140A/SG140

POSITIVE FIXED VOLTAGE REGULATOR

DESCRIPTION

The SG140A/140 series of positive regulators offer self contained, fixed-voltage

capability with up to 1.5A of load current and input voltage up to 50V (SG140A series

only).

These units feature a unique on-chip trimming system to set the output voltages to

within ±1.5% of nominal on the SG140A series and ±2.0% on the SG140 series. The

SG140A versions also offer much improved line and load regulation characteristics.

Utilizing an improved Bandgap reference design, problems have been eliminated that

are normally associated with the Zener Diode references, such as drift in output voltage

and large changes in the line and load regulation.

All protective features of thermal shutdown, current limiting, and safe-area control have

been designed into these units and since these regulators require only a small output

capacitor for satisfactory performance, ease of application is assured.

Although designed as fixed-voltage regulators, the output voltage can be increased

through the use of a simple voltage divider. The low quiescent drain current of the

device insures good regulation when this method is used.

Product is available in hermetically sealed TO-257 (isolated), TO-3, TO-66, and

TO-39 power packages.

FEATURES

• Output voltage set internally to

±1.5% on SG140A

• Input voltage reange to 50V max.

on SG140A

• Two volt input-output differential

• Bandgap reference voltage

• Excellent line and load regulation

• Foldback current limiting

• Thermal overload protection

• Voltages available - 5V, 12V, 15V

• Voltages Not Recommended For

New Designs - 6V, 8V, 18V, 24V

HIGH RELIABILITY FEATURES

- SG140A/140

♦ Available to MIL-STD - 883

♦ Radiation data available

♦ LMI level "S" processing available

SCHEMATIC DIAGRAM

2/90 Rev 1.4 6/97

Copyright  1997

LINFINITY Microelectronics Inc.

11861 Western Avenue ∞ Garden Grove, CA 92841

1

(714) 898-8121 ∞FAX: (714) 893-2570

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