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Seiko Instruments Introduces New Ultra-Small LDO Voltage Regulator ICs

TOKYO Feb. 15, 2011 February 15

Thermal shutdown protection is built-in, automatically protecting the circuit when the junction temperature reaches 150 degrees C and restarts regulation when it drops to 120 degrees C. Overcurrent protection is also a built-in feature.

Current consumption has been reduced to extremely low levels (S-1313: 0.9 micro amperes and S-1312: 20 micro amperes) extending battery and device operating times, while providing excellent ripple rejection of 75 dB (typical). Output voltage is maintained with high accuracy within +/- 1.0%.

Utilizing SII’s HSNT-4(0808) ultra-small package (0.8 x 0.8 x 0.4 mm), the regulators occupy only one-third the area of conventional SNT-4 package regulators, while enabling automatic visual solder joint inspection, improving manufacturing yields and reliability. The package incorporates a heat sink capable of 850 mW dissipation (board size 40 x 40 x 0.8 mm, 4 layers, copper ratio 50%), providing higher reliability and performance.

The outer lead design also decreases failure rates related to circuit board flexing and mechanical shock. This is particularly important for small consumer devices like smart phones that are subjected to constant use.

Both regulators are also available in SOT-23-5 and SC-82AB packages.

Detailed information:

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About Seiko Instruments Inc. (SII)

Major subsidiary of Seiko Holdings Corporation (TSE: 8050). Develops, manufactures and sells watches, precision components and machine tools, electronic components, communication products and solutions, printers, measurement and analysis instruments.


Tomohiro Io

Corporate Communications Dept.

Seiko Instruments Inc.

Tel: +81-43-211-1111

e-mail: [email protected]

Online Inquiry:

SOURCE Seiko Instruments Inc.

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