LT LTC3456EUF#PBF

USB，外设1.8V ~ 3.2V

Overview

The LTC3456EUF 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 LTC3456EUF contains a USB power manager, a Hot Swap output, a low-battery indicator and an alwaysalive VMAX output. The LTC3456EUF 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 LTC3456EUF ideal for space-sensitive portable devices.

Features

Bulk Package
Mainly used in USB, Peripherals applications
Operating temperature: -40°C~85°C
BATTERY CHARGE CONTROLLER analog IC
2 Outputs

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LTC3456EUF#PBFPower Management applications.

• Portable Navigation Devices
• Portable Media Players
• Portable Systems
• Hand-Held Systems
• Space satellite point of load supply
• Communications payload
• Optical imaging payload
• Desktop PC
• Motherboard
• Standard notebook PC