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LD49150PU10R Datasheet(PDF) 1 Page - STMicroelectronics |
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LD49150PU10R Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 22 page June 2010 Doc ID 13446 Rev 3 1/22 22 LD49150XX08 LD49150XX10, LD49150XX12 1.5 A very low drop for low output voltage regulator Features ■ Input voltage range: –VI = 1.4 V to 5.5 V –VBIAS = 3 V to 6 V ■ Stable with ceramic capacitor ■ ±1.5 % initial tolerance ■ Maximum dropout voltage (VI - VO) of 200 mV over temperature ■ Adjustable output voltage down to 0.8 V ■ Ultra fast transient response (up to 10 MHz bandwidth) ■ Excellent line and load regulation specifications ■ Logic controlled shutdown option ■ Thermal shutdown and current limit protection ■ Junction temperature range: - 25 °C to 125 °C Applications ■ Graphics processors ■ PC add-in cards ■ Microprocessor core voltage supply ■ Low voltage digital ICs ■ High efficiency linear power supplies ■ SMPS post regulators Description The LD49150xx is a high-bandwidth, low-dropout, 1.5 A voltage regulator, ideal for powering core voltages of low-power microprocessors. The LD49150xx implements a dual supply configuration allowing for very low output impedance and very fast transient response. The LD49150xx requires a bias input supply and a main input supply, allowing for ultra-low input voltages on the main supply rail. The input supply operates from 1.4 V to 5.5 V and the bias supply requires between 3 V and 6 V for proper operation. The LD49150xx offers fixed output voltages from 0.8 V to 1.8 V and adjustable output voltages down to 0.8 V. The LD49150xx requires a minimum output capacitance for stability, and work optimally with small ceramic capacitors. PPAK DFN6 (3x3 mm) Table 1. Device summary Order codes Output voltages PPAK (tape and reel) DFN6 (tape and reel) (1) LD49150PT08R 0.8 V (2) LD49150PT10R LD49150PU10R 1.0 V LD49150PT12R LD49150PU12R 1.2 V 1. Available on request. 2. Adjustable version. www.st.com |
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