LTC3456
Info: : PRODUCTION
searchIcon
cartIcon

LTC3456

2-Cell, Multi-Output DC/DC Converter with USB Power Manager

Show More showmore-icon

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $4.76
Features
  • 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
Additional Details
show more Icon

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
Part Models 2
1ku List Price Starting From $4.76

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3456EUF#PBF
  • HTML
  • HTML
LTC3456EUF#TRPBF
  • HTML
  • HTML

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 20, 2022

- 21_0269

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 20, 2022

- 21_0269

arrow down

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC658A

LTC3456EUF | PMIC without Battery Charger, 2V ≤ VIN ≤ 5.5V, 1.8VOUT1@200mA, 3.3VOUT2@150mA, 3.3VOUT3@50mA

zoom

DC658A

LTC3456EUF | PMIC without Battery Charger, 2V ≤ VIN ≤ 5.5V, 1.8VOUT1@200mA, 3.3VOUT2@150mA, 3.3VOUT3@50mA

LTC3456EUF | PMIC without Battery Charger, 2V ≤ VIN ≤ 5.5V, 1.8VOUT1@200mA, 3.3VOUT2@150mA, 3.3VOUT3@50mA

Product Detail

Demonstration Circuit 658 is a complete power management system using the LTC3456 for portable applications powered by a wall adapter, a USB port or a 2-cell alkaline battery, in that order of priority. DC658 provides three outputs: a 1.8V, 200mA core supply, a 3.3V, 150mA main supply, and a 3.3V, 50mA Hot Swap supply. All outputs are discharged to ground during shutdown. The synchronous buck (1.8V output) and the second converter (which operates as a buck or a boost depending on the power source, and provides 3.3V @ 150mA and 3.3V @ 50mA outputs) accept a 2V to 3.2V battery input or USB/Wall adapter input.



Recently Viewed