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SA57031-36 Datasheet(PDF) 2 Page - NXP Semiconductors |
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SA57031-36 Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 13 page Philips Semiconductors Product data SA57031-XX Micropower 150 mA, low-noise, low dropout linear regulator with on/off 2 2003 Jun 23 853-2361 28634 GENERAL DESCRIPTION The SA57031 is a 150 mA, fixed output voltage regulator designed to provide very low dropout voltage and low noise in battery powered and portable applications. The output voltage is preset to voltages between 1.8 to 5.0 Volts, in 100 mV increments. The SA57031 achieves excellent performance in all specifications such as excellent power supply ripple rejection at low frequency, low supply-current, low dropout voltage, low power consumption, extremely small size with chip scaled package (CSP), extremely low output noise voltage, very fast start-up response time, precision output, fast dynamic response to line and load regulation, etc. This regulator consists of an internal voltage reference, and current limit. The SA57031 is housed in a WL-CSP4 package (see dimensional drawing for layout). Bottom View FEATURES • Many Preset Output Voltages: 1.8 to 5.0 V in 0.1 V increments • Wafer-level chip scale package (WL-CSP4) • Extremely low PSRR: 80 dB typical at 1 kHz • Low Dropout Voltage: 100 mV (typ) @ 50 mA output current • Very Low Consumption Current: 100 mA typ. (when not loaded), 0.1 mA max. (when off) • High precision Output Voltage: ±2% • Output Current Capacity: 150 mA (typ) • Low Noise: 30mVrms @ 10 Hz to 100 kHz • Good Line Regulation: 0.01%/V typ. • Good Load Regulation: 0.003%/mA typ. • Low Temperature Drift Co-efficient to V O: ±100 ppm/°C • Built-in Current Limiter • Wide Operating Temperature Range: –40 to +85 °C APPLICATIONS • Cellular Phones, Cordless Phones and 2-way Radios • Electronic Notebooks, PDAs and Palmtop Computers • Cameras, VCRs and Camcorders • PCMCIA Cards • Modems • Battery-powered or Hand-held Instruments SIMPLIFIED SYSTEM DIAGRAM (BOTTOM VIEW) SL02001 B2 A1 B1 VO GND CO CI 2.2 µF ON A2 VI SA57031-XX OFF + – DC 2.0 V TO 6.0 V RLOAD V Preset output voltages: 1.8 V to 5.0 V (in 100 mV increments) Figure 1. Simplified system diagram. |
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