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LP3981ILD-3.0/NOPB Datasheet(PDF) 1 Page - Texas Instruments |
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LP3981ILD-3.0/NOPB Datasheet(HTML) 1 Page - Texas Instruments |
1 / 25 page IN BYPASS LP3981 2.2 µF EN OUT-SENSE OUT 2(2) 7(6) 1(1) 4(3) 6(5) 5(4) 2.2 µF Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design LP3981 SNVS159H – OCTOBER 2001 – REVISED JULY 2015 LP3981 Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator 1 Features 3 Description Performance of the LP3981 device is optimized for 1 • 2.5-V to 6-V Input Range battery-powered systems to deliver ultra-low-noise, • 300-mA Output Current extremely low dropout voltage, and low quiescent • 60-dB PSRR at 1 kHz current. Regulator ground current increases only slightly in dropout, further prolonging the battery life. • ≤ 1-μA Quiescent Current When Shut Down • Fast Turnon Time: 120 μs (typical) with CBYPASS = Power supply rejection is better than 60 dB at low 0.01 µF frequencies. This high power supply rejection is maintained down to lower input voltage levels • 132-mV Typical Dropout with 300-mA Load common to battery-operated circuits. • 35- μVrms Output Noise Over 10 Hz to 100 kHz The device is ideal for mobile phone and similar • Logic Controlled Enable battery-powered wireless applications. It provides up • Stable With Ceramic and High-Quality Tantalum to 300 mA, from a 2.5-V to 6-V input, consuming less Capacitors than 1 µA in disable mode. • Thermal Shutdown and Short-Circuit Current Limit The LP3981 is available in 8-pin VSSOP-8 and 6-pin • Low Thermal Resistance in WSON-6 Package WSON packages. Performance is specified for −40°C Gives Excellent Power Capability to +125°C temperature range. The device available in the following output voltages: 2.5 V, 2.7 V, 2.8 V, 2.83 V, 3 V, 3.03 V and 3.3 V as standard. Other 2 Applications output options can be made available; contact your • CDMA Cellular Handsets local TI sales office for more information. • Wideband CDMA Cellular Handsets Device Information(1) • GSM Cellular Handsets PART NUMBER PACKAGE BODY SIZE (NOM) • Portable Information Appliances WSON (6) 4.00 mm x 3.00 mm LP3981 VSSOP (8) 3.00 mm x 3.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Circuit Note: Pin numbers in parenthesis indicate WSON package. 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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