Part Number: MCP73831T

Function: Fully Integrated Li-Ion, Li-Polymer Charge Management Controller

Package: 8-Lead, 2 mm x 3 mm DFN package or a 5-Lead, SOT-23

Manufacturer: Microchip Technology

Pinouts:

 

Description

The MCP73831T, MCP73832 devices are highly advanced linear charge management controllers for use in space limited, cost-sensitive applications. The MCP73831, MCP73832 are available in an 8-Lead, 2 mm x 3 mm DFN package or a 5-Lead, SOT-23 package.

Along with their small physical size, the low number of external components required make the MCP73831, MCP73832 ideally suited for portable applications. For applications charging from a USB port, the MCP73831, MCP73832 adhere to all the specifications governing the USB power bus.

Features

1. High accuracy preset output voltage regulation (+/-0.75%)

2. Output voltage options include 4.2V, 4.35V, 4.4V and 4.5V

3. User-programmable charge current

4. Charge status output can directly drive LEDs

5. On-chip thermal regulation

6. Preconditioning and end-of-charge ratio options

7. Under-voltage lockout

MCP73831T Datasheet PDF Download

Other data sheets are available within the file:

MCP73831, MCP73831-2ACI/OT, MCP73831-2ATI/OT,

MCP73831-2DCI/OT, MCP73831-3ACI/OT

Part Number: UCC28880

Function: 700-V Lowest Quiescent Current Off-Line Switcher

Package: SOIC 7 Pin Type

Manufacturer: Texas Instruments

Pinouts:

 

Description

The UCC28880 integrates the controller and a 700-V power MOSFET into one monolithic device. The device also integrates a high-voltage current source, enabling start up and operation directly from the rectified mains voltage.

The low quiescent current of the device enables excellent efficiency. With the device the most common converter topologies, such as buck, buck boost and flyback can be built using a minimum number of external components. The IC incorporates a soft-start feature for controlled start up of the power stage which minimizes the stress on the power-stage components.

Features

1. Self-Biased Switcher (Start Up and Operation Directly from Rectified Mains Voltage)

2. Supports Buck, Buck-Boost and Flyback Topologies

3. <100-μA Device Quiescent Current

4. Robust Performance with Inductor Current Runaway Prevention

UCC28880 Datasheet PDF Download

Other data sheets are available within the file: UCC28880D, UCC28880DR