LT3380 Multioutput Power Management Solution with Four Buck Switching and Three LDO Linear 2 Regulators with I C FEATURES DESCRIPTION 2 n Quad I C Adjustable High Efficiency Step-Down The LT 3380 is a complete power management solution DC/DC Converters: 2.5A, 2.5A, 1.5A, 1.5A for advanced portable application processor-based sys- n Three 300mA LDO Regulators (Two Adjustable) tems. The device contains four synchronous step-down 2 n Independent Enable Pin-Strap or I C Sequencing DC/DC converters for core, memory, I/O, and system on- n Programmable Autonomous Power-Down Control chip (SoC) rails and three 300mA LDO regulators for low n 2 Warnings and Faults noise analog supplies. An I C serial port may be used n IRQ Pin and IRQ Status Register to control regulator enables, power-down sequencing, n Power Good Pin and Status Register output voltage levels, dynamic voltage scaling, operating n 150C T Operation (LT3380H) J modes, and status reporting. n Dynamic Voltage Scaling Regulator start-up is sequenced by connecting outputs to n Selectable 2.25MHz or 1.12MHz Switching Frequency 2 n enable pins in the desired order or via the I C port. The 12A Standby Current n LT3380 outputs may be sequenced off in one of four time Side Wettable 40-Lead 6mm 6mm QFN Package 2 n slots selected using I C command registers. AEC-Q100 Qualified for Automotive Applications The device is available in a 40-lead 6mm 6mm QFN with APPLICATIONS wettable flanks for optical inspection. n Automotive All registered trademarks and trademarks are the property of their respective owners. n Industrial n Communications n General Purpose Multichannel Power Supplies TYPICAL APPLICATION 1H Start-Up Sequence 2.5A SW1 2.7V TO 5.5V V IN 1.7V TO V V IN IN L1 PWR ON FB B1 47F 300mA LDO1 5V/DIV LDO1 LT3380 1F FB L1 1H SW2 2.5A LDO2 1V/DIV FB B2 47F BUCK1 AND BUCK2 1.7V TO V V IN IN L2 300mA LDO2 BUCK3 1H SW3 1.5A 1F FB L2 BUCK4 1V/DIV FB B3 47F 1.8V TO V V IN IN L3 3380 TA01b 1ms/DIV 1.8V 1H LDO3 300mA 1.5A SW4 1F FB B4 47F 2 2 1.6V TO 5.5V DV I C DD 7 IRQ ENABLES PWR ON PGOOD 3380 TA01a Rev. B 1 Document Feedback For more information www.analog.comLT3380 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW V , DV ..................................................... 0.3V to 6V IN DD PV , PV , PV , PV ........ V 0.3V to V + 0.3V IN1 IN2 IN3 IN4 IN IN 40 39 38 37 36 35 34 33 32 31 V , V , V ...................... 0.3V to V + 0.3V IN L1 IN L2 IN L3 IN FB L2 1 30 EN L2 LDO1, FB L1, LDO2, FB L2, LDO3, FB B1, FB B2, V 2 29 GND IN L2 FB B3, FB B4, PGOOD, EN B1, EN B2, EN B3, EN B4, LDO2 3 28 GND EN L1, EN L2, EN L3, PWR ON, IRQ ......... 0.3V to 6V LDO3 4 27 V IN SDA, SCL ......................................0.3V to DV + 0.3V DD V 5 26 GND IN L3 41 Operating Junction Temperature Range GND LDO1 6 25 FB B3 (Notes 2, 3) ............................................ 40C to 150C V 7 24 FB B4 IN L1 FB L1 8 23 FB B1 Storage Temperature Range .................. 65C to 150C EN L1 9 22 FB B2 EN L3 10 21 PWR ON 11 12 13 14 15 16 17 18 19 20 UJM PACKAGE 40-LEAD (6mm 6mm) PLASTIC QFN T = 150C, = 33C/W, = 2C/W JMAX JA JC EXPOSED PAD (PIN 41) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3380EUJM PBF LT3380EUJM TRPBF LT3380UJM 40-Lead Plastic Side Wettable QFN (6mm 6mm) 40C to 125C LT3380IUJM PBF LT3380IUJM TRPBF LT3380UJM 40-Lead Plastic Side Wettable QFN (6mm 6mm) 40C to 125C LT3380HUJM PBF LT3380HUJM TRPBF LT3380UJM 40-Lead Plastic Side Wettable QFN (6mm 6mm) 40C to 150C AUTOMOTIVE PRODUCTS** LT3380IUJM WPBF LT3380IUJM WTRPBF LT3380UJM 40-Lead Plastic Side Wettable QFN (6mm 6mm) 40C to 125C LT3380HUJM WPBF LT3380HUJM WTRPBF LT3380UJM 40-Lead Plastic Side Wettable QFN (6mm 6mm) 40C to 150C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. **Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for thesemodels. Rev. B 2 For more information www.analog.com SW1 SW4 DV PGOOD DD SDA GND SCL EN B4 PV PV IN1 IN4 PV PV IN2 IN3 EN B1 EN B3 EN B2 GND GND IRQ SW2 SW3