LD3986 Datasheet | STMicroelectronics

LD3986 SERIES DUAL ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REG. FOR USE WITH VERY LOW ESR OUT. CAPACITORS .. s INPUT VOLTAGE s s s s s s s s s s s FROM 2.5V TO 6V STABLE WITH LOW ESR CERAMIC CAPACITORS ULTRA LOW DROPOUT VOLTAGE (60m V TYP. AT 150m A LOAD, 0.4m V TYP. AT 1m A LOAD) VERY LOW QUIESCENT CURRENT (155µA TYP. AT NO LOAD, 290µA TYP. AT 150m A LOAD; MAX 2µA IN OFF MODE) GUARANTEED OUTPUT CURRENT UP TO 150m A FOR BOTH OUTPUTS DUAL OUTPUT VOLTAGES FAST TURN-ON TIME: TYP. 120µs (CO=1µF, CBYP=10n F AND IO=1m A) LOGIC-CONTROLLED ELECTRONIC SHUTDOWN INTERNAL CURRENT AND THERMAL LIMIT OUTPUT LOW NOISE VOLTAGE 30µVRMS OVER 10Hz to 100KHz S.V.R. OF 50d B AT 1KHz, 40d B AT 10KHz TEMPERATURE RANGE: -40°C TO 125°C Flip-Chip DESCRIPTION The LD3986 provides up to 150m A at each output, from 2.5V to 6V input voltage. The ultra low drop-voltage, low quiescent current and low noise make it suitable for low power applications and in battery powered systems. Regulator ground current increases only slightly in dropout, further prolonging the battery life. Power supply rejection is 50 d B at 1KHz and 40 d B at 10KHz. High power supply rejection is maintained down to low input voltage levels mon to battery operated circuits. Shutdown Logic Control function is available for each output, 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. The LD3986 is designed to work with low ESR ceramic capacitors. Typical applications are in mobile phone and similar battery powered wireless systems. Figure 1: Schematic Diagram September 2005 Rev. 3 1/12 LD3986 SERIES Table 1: Order Codes Flip-Chip LD3986J12248R Flip-Chip (Lead Free) LD3986J122R-E LD3986J12248R-E LD3986J1828R-E LD3986J2528R-E (- ) LD3986J28R-E LD3986J285R-E LD3986J29R-E (- ) LD3986J30R-E (- ) LD3986J2830R-E (- ) LD3986J3133R-E (- ) LD3986J33R-E 1 OUTPUT VOLTAGES 1.22 V 1.22 V 1.8 V 2.5 V 2.8 V 2.85 V 2.9 V...