LD2985AM15R| Datasheet

LD2985AM15R, LD2985AM18R, LD2985AM25R, LD2985AM27R, LD2985AM28R, LD2985AM30R, LD2985AM33R, LD2985AM50R, LD2985AXX15, LD2985AXX18, LD2985AXX25, LD2985AXX27, LD2985AXX28, LD2985AXX30, LD2985AXX33, LD2985AXX50, LD2985BM15R, LD2985BM18R, LD2985BM25R, LD2985BM27R, LD2985BM28R, LD2985BM30R, LD2985BM32R, LD2985BM33R, LD2985BM50R, LD2985BXX15, LD2985BXX18, LD2985BXX25, LD2985BXX27, LD2985BXX28, LD2985BXX30, LD2985BXX32, LD2985BXX33, LD2985BXX50

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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 mA at no load) Output current up to 150 mA Logic controlled electronic shutdown Output voltage of 1.5, 1.8, 2.5, 2.7, 2.8, 3, 3.2, 3.3, 5 V Internal current and thermal limit Available in 1 % tolerance (at 25 C, A version) Low output noise voltage 30 mVrms Smallest package SOT23-5L Temperature range: -40 C to 125 C in battery powered systems. In sleep mode quiescent current is less than 1 uA 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 uVrms. Typical application are in cellular phone, palmtop laptop computer, personal digital assistant (PDA), personal stereo, camcorder and cam
era.
SOT23-5L

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 Table 1. Device summary

Order codes A Version LD2985AM15R LD2985AM18R LD2985AM25R LD2985AM27R LD2985AM28R LD2985AM30R B Version LD2985BM15R LD2985BM18R LD2985BM25R LD2985BM27R LD2985BM28R LD2985BM30R LD2985BM32R LD2985AM33R LD2985AM50R LD2985BM33R LD2985BM50R Output voltage 1.5V 1.8V 2.5V 2.7V 2.8V 3.0V 3.2V 3.3V 5.0V

February 2008

Rev 7

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