LD49300PT08R STMicroelectronics

LD49300 3 A very low-dropout voltage regulator Datasheet - production data Applications Graphics processors PC add-in cards Microprocessor core voltage supply Low voltage digital ICs PPAK High efficiency linear power supplies SMPS post regulators Features Description Input voltage range: The LD49300 is a high-bandwidth, low-dropout, V = 1.4 V to 5.5 V I 3.0 A voltage regulator, ideal for powering core V = 3 V to 6 V BIAS voltages of low power microprocessors. The Stable with ceramic capacitors LD49300 implements a dual supply configuration, which guarantees a very low output impedance 1.5% initial tolerance and a fast transient response. The LD49300 Maximum dropout voltage (V - V ) 400 mV I O requires a bias input supply and a main input over the operating temperature range supply, allowing ultra-low input voltages on the Adjustable output voltage starting from 0.8 V main supply rail. The input supply operates from 1.4 V to 5.5 V and bias supply requires between 3 Very fast transient response (up to 10 MHz V and 6 V to work properly. The LD49300 offers bandwidth) fixed output voltages from 0.8 V to 1.8 V and Excellent line and load regulation adjustable output voltages from 0.8 V. The specifications LD49300 requires a minimum output capacitance Logic-controlled shutdown option for stability, and works optimally with small ceramic capacitors. Thermal shutdown and current limit protection Junction temperature range: - 25 C to 125 C Table 1. Device summary Order codes Package Packaging (1) LD49300PT08R PPAK (tape and reel) 2500 pieces per reel LD49300PT10R PPAK (tape and reel) 2500 pieces per reel LD49300PT12R PPAK (tape and reel) 2500 pieces per reel 1. Adjustable version. May 2014 DocID12861 Rev 4 1/23 This is information on a product in full production. www.st.comContents LD49300 Contents 1 Typical application circuits . 3 2 Alternative application circuits 4 3 Pin configuration 5 4 Diagram . 6 5 Maximum ratings 7 6 Electrical characteristics . 8 7 Typical characteristics . 9 8 Application hints . 13 8.1 Input supply voltage (VIN) 13 8.2 Bias supply voltage (VBIAS) 13 8.3 External capacitors 13 8.4 Output capacitor 13 8.5 Minimum load current 13 8.6 Power sequencing recommendations . 14 8.7 Power dissipation/heatsinking . 14 8.8 PPAK package heatsinking . 15 8.9 Adjustable regulator design . 15 8.10 Enable . 16 9 Package mechanical data 17 10 Packaging mechanical data 20 11 Revision history . 22 2/23 DocID12861 Rev 4