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LD2985AM18R 数据表(PDF) 1 Page - STMicroelectronics |
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LD2985AM18R 数据表(HTML) 1 Page - STMicroelectronics |
1 / 21 page January 2009 Rev 11 1/21 21 LD2985Axx LD2985Bxx Very low drop and low noise voltage regulator low ESR capacitors compatible, with inhibit function Features ■ Very low dropout voltage (280 mV at 150 mA and 7 mV at 1 mA load) ■ Very low quiescent current (2 mA typ. at 150 mA load and 80 µA at no load) ■ Output current up to 150 mA ■ Logic controlled electronic shutdown ■ Output voltage of 1.8, 2.5, 2.7, 2.8, 3, 3.3, 5 V ■ Internal current and thermal limit ■ Available in ± 1.5 % tolerance (at 25 °C, A version) ■ Low output noise voltage 30 mVrms ■ Smallest package SOT23-5L ■ Temperature range: - 40°C to 125 °C Description The LD2985A/Bxx is a 150 mA fixed output voltage regulator. The ultra low drop voltage and the low quiescent current make them particularly suitable for low noise, low power applications, and in battery powered systems. In sleep mode quiescent current is less than 1 µA when INHIBIT pin is pulled low. Shutdown logic control function is available on pin 3 (TTL compatible). This means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. An external capacitor, CBYP = 10 nF, connected between bypass pin and GND reduce the noise to 30 µVrms. Typical application are in cellular phone, palmtop laptop computer, personal digital assistant (PDA), personal stereo, camcorder and camera. SOT23-5L Table 1. Device summary Part numbers A version B version Output voltages LD2985AXX18 LD2985BXX18 1.8 V LD2985AXX25 LD2985BXX25 2.5 V LD2985AXX27 LD2985BXX27 2.7 V LD2985AXX28 LD2985BXX28 2.8 V LD2985AXX30 LD2985BXX30 3.0 V LD2985AXX33 LD2985BXX33 3.3 V LD2985AXX50 LD2985BXX50 5.0 V www.st.com |
类似零件编号 - LD2985AM18R |
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类似说明 - LD2985AM18R |
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