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SPX431A,B,C

Precision Adjustable Shunt Regulator

FEATURES

鈥?Trimmed Bandgap: 0.5%, 1% and 2%

鈥?Wide Operating Current: 1mA to 150mA

鈥?Extended Temperature Range:

0擄C to 105擄C

鈥?Low Temperature Coefficient: 30 ppm/擄C

鈥?Improved Replacement in Performance

for TL43

鈥?Low Cost Solution

鈥?Available in Lead Free, RoHS compliant

packaging: SOIC, SOT-89, SOT-23-3,

SOT-23-5, and TO-92

APPLICATIONS

鈥?Battery Operated Equipment

鈥?Adjustable Supplies

鈥?Switching Power Supplies

鈥?Error Amplifiers

鈥?Single Supply Amplifier

鈥?Monitors/VCRs/TVs

鈥?Personal Computers

DESCRIPTION

The SPX43 is a three-terminal adjustable shunt voltage regulator providing a highly accurate

bandgap reference. The SPX431 acts as an open-loop error amplifier with a 2.5V temperature

compensation reference. The SPX431 has thermal stability, wide operating current of 150mA

and broad temperature range of 0擄C

to 150擄C, making it suitable for a variety of applications

which require a low-cost, high performance solution. SPX431A tolerance of 0.5% is proven

to be sufficient to overcome all other errors in the system to virtually eliminate the need for

trimming in the power supply manufacturer's assembly line and contribute a significant cost

savings. The output voltage may be adjusted to any value between V

REF

and 36 volts with

two external resistors. The SPX431 is available in SOIC-8, SOT-23-3, SOT-23-5, SOT89,

and TO-92 packages.

TyPICAL APPLICATIONS CIRCUIT

Cathode (K)

Reference

(R)

+

-

2.5V

Anode (A)

Rev F: Nov 2-06

SPX43A,B,C Precision Adjustable Shunt Regulator

漏 2006 Sipex Corporation



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