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LP3985IM5X-3.3 Datasheet(PDF) 1 Page - Texas Instruments |
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LP3985IM5X-3.3 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 29 page 1PF BYPASS LP3985 VIN VOUT VEN 3(A1) 5(C1) 4(A3) 2(B2) 1PF 1(C3) * LP3985 www.ti.com SNVS087AC – OCTOBER 2000 – REVISED MAY 2013 LP3985 Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator Check for Samples: LP3985 1 FEATURES DESCRIPTION The LP3985 is designed for portable and wireless 2 • Miniature 5-I/O DSBGA and USON Package applications with demanding performance and space • Logic Controlled Enable requirements. • Stable with Ceramic and High Quality The LP3985 is stable with a small 1µF ±30% ceramic Tantalum Capacitors or high-quality tantalum output capacitor. The DSBGA • Fast Turn-on requires the smallest possible PC board area - the total application circuit area can be less than 2.0mm x • Thermal Shutdown and Short-Circuit Current 2.5mm, a fraction of a 1206 case size. Limit The LP3985's performance is optimized for battery APPLICATIONS powered systems to deliver ultra low noise, extremely low dropout voltage and low quiescent current. • CDMA Cellular Handsets Regulator ground current increases only slightly in • Wideband CDMA Cellular Handsets dropout, further prolonging the battery life. • GSM Cellular Handsets An optional external bypass capacitor reduces the • Portable Information Appliances output noise without slowing down the load transient response. Fast startup time is achieved by utilizing an KEY SPECIFICATIONS internal power-on circuit that actively pre-charges the bypass capacitor. • 2.5 to 6.0V Input Range Power supply rejection is better than 50dB at low • 150mA Verified Output frequencies and starts to roll off at 1kHz. High power • 50dB PSRR at 1kHz @ VIN = VOUT + 0.2V supply rejection is maintained down to low input • ≤1.5μA Quiescent Current when Shut Down voltage levels common to battery operated circuits. • Fast Turn-On time: 200 μs (typ.) The device is ideal for mobile phone and similar • 100mV Maximum Dropout with 150mA Load battery powered wireless applications. It provides up to 150mA, from a 2.5V to 6V input. The LP3985 • 30 μVrms Output Noise (typ.) Over 10Hz to consumes less than 1.5µA in disable mode and has 100kHz fast turn-on time less than 200µs. • −40 to +125°C Junction Temperature Range for Operation • 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 2.9V, 3.0V, 3.1V, 3.2V, 3.3V, 4.7V, 4.75V, 4.8V and 5.0V outputs standard Typical Application Circuit Pin Numbers in parenthesis indicate DSBGA package. * Optional Noise Reduction Capacitor. Figure 1. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2000–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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