LTC3456
PRODUCTION2-Cell, Multi-Output DC/DC Converter with USB Power Manager
- Part Models
- 2
- 1ku List Price
- Starting From $6.02
Overview
- Seamless Transition Between 2-Cell Battery, USB and AC Wall Adapter Input Power Sources
- Main Output: Fixed 3.3V Output
- Core Output: Adjustable from 0.8V to VBATT(MIN)
- Hot Swap™ Output for Memory Cards
- All Outputs Discharged to Ground During Shutdown
- Power Supply Sequencing: Main and Hot Swap Outputs Come Up After Core Output
- Accurate USB Current Limiting
- High Frequency Operation: 1MHz
- High Efficiency: Up to 92%
- Small (4mm × 4mm × 0.75mm) 24-Pin QFN Package
The LTC3456 is a complete power management system IC optimized for a variety of portable applications. The device generates two separate power rails: a 3.3V (fixed) Main supply and a 1.8V (adjustable) Core supply. In addition, the LTC3456 contains a USB power manager, a Hot Swap output, a low-battery indicator and an alwaysalive VMAX output. The LTC3456 takes power from one of three sources: a Wall adapter, a USB port or a 2-cell Alkaline/NiCd/NiMH battery, in that order of priority. Current drawn from the USB port is accurately limited to 100mA or 500mA based on the state of the USBHP pin.
The Main and Core switchers are all high efficiency, 1MHz fixed frequency PWM converters. Availability in a small (4mm × 4mm × 0.75mm) 24-pin QFN package makes the LTC3456 ideal for space-sensitive portable devices.
Applications
- GPS Portable Navigators
- MP3 Players
- Digital Cameras
- Handheld Computers
Documentation
Data Sheet 1
User Guide 1
Design Note 1
Technical Articles 1
Press Release 1
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC3456EUF#PBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC3456EUF#TRPBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products |
||
| LTC3456EUF#PBF | PRODUCTION | |
| LTC3456EUF#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Evaluation Kits
LTC3456EUF | PMIC without Battery Charger, 2V ≤ VIN ≤ 5.5V, 1.8VOUT1@200mA, 3.3VOUT2@150mA, 3.3VOUT3@50mA
Resources
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