Features and Benefits
- Quad I2C Adjustable High Efficiency Step-Down DC/DC Converters: 2.5A, 2.5A, 1.5A, 1.5A
- Three 300mA LDO Regulators (Two Adjustable)
- Independent Enable Pin-Strap or I2C Sequencing
- Programmable Autonomous Power-Down Control
- Warnings and Faults
- IRQ Pin and IRQ Status Register
- Power Good Pin and Status Register
- 150°C TJ Operation (LT3380H)
- Dynamic Voltage Scaling
- Selectable 2.25MHz or 1.12MHz Switching Frequency
- 12µA Standby Current
- Side Wettable 40-Lead 6mm × 6mm QFN Package
The LT3380 is a complete power management solution for advanced portable application processor-based systems. The device contains four synchronous step-down DC/DC converters for core, memory, I/O, and system onchip (SoC) rails and three 300mA LDO regulators for low noise analog supplies. An I2C serial port may be used to control regulator enables, power-down sequencing, output voltage levels, dynamic voltage scaling, operating modes, and status reporting.
Regulator start-up is sequenced by connecting outputs to enable pins in the desired order or via the I2C port. The LT3380 outputs may be sequenced off in one of four time slots selected using I2C command registers.
The device is available in a 40-lead 6mm × 6mm QFN with wettable flanks for optical inspection.
- General Purpose Multichannel Power Supplies
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
DC2985A is a multi-output power management solution demonstration circuit, featuring the LT3380. It contains two 2.5A, two 1.5A synchronous step-down DC/DC regulators and three 300mA LDO regulators.
All regulators can be enabled with external enable pins. After the first regulator is enabled, the remaining enable pins use a precision threshold to allow hardwire-programmed Power-Up Sequence.
A micro-USB communication interface is integrated on board to allow software GUI to write or read the registers in LT3380 via its I2C serial port. This GUI can control regulator enables, power-down sequencing, output voltage levels, dynamic voltage scaling, operation modes, status reporting and other special functions.
Refer to LT3380 data sheet for more details on the electrical specifications and the setting of its command registers.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.