MCP73837-AMISLASHMF datasheet(1/36 Pages) MICROCHIP

Part #	MCP73837-AMI/MF

Description	Advanced Stand-Alone Li-Ion/Li-Polymer Battery Charge Management Controller with Autonomous AC Adapter or USB Port Source Selection

PDF	36 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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 2007-2015 Microchip Technology Inc.

DS20002071C-page 1

MCP73837/8

Features

• Highly Accurate Preset Voltage Regulation:

±0.5%

• Available Voltage Regulation Options:

- 4.20V, 4.35V, 4.4V or 4.5V

• Complete Linear Charge Management Controller:

- Autonomous Power Source Selection

- Integrated Pass Transistors

- Integrated Current Sense

- Integrated Reverse Discharge Protection

• Constant Current (CC)/Constant Voltage (CV)

Operation with Thermal Regulation

• Selectable USB Port Charge Current:

- Low: 1 Unit Load

- High: 5 Unit Loads

• Programmable AC Adapter Charge Current:

- 15 mA – 1000 mA

• Two-Charge Status Outputs

• Power-Good Monitor: MCP73837

• Timer Enable: MCP73838

• Automatic Recharge:

- Selectable Voltage Threshold

• Automatic End-of-Charge Control:

- Selectable Charge Termination Current Ratio

- Selectable Safety Timer Period

• Preconditioning of Deeply Depleted Cells – Can

Be Disabled

• Battery Cell Temperature Monitor

• UVLO (Undervoltage Lockout)

• Automatic Power-Down When Input Power Is

Removed

• Low-Dropout (LDO) Linear Regulator Mode

• Numerous Selectable Options Available for a

Variety of Applications:

- Refer to Section 1.0 “Electrical Characteris-

tics” for Selectable Options

- Refer to the “Product Identification System”

for Standard Options

• Temperature Range: -40°C to 85°C

• Packaging:

- 10-Lead 3 mm x 3 mm DFN

- 10-Lead MSOP*

* Consult the factory for MSOP availability.

Applications

• Smart Phones and Personal Data Assistants

(PDA)

• Portable Media Players (PMP)

• Ultra Mobile Devices (UMD)

• Digital Cameras

• MP3 Players

• Bluetooth Headsets

• Handheld Medical Devices

• AC/USB Dual Source Li-Ion Battery Chargers

Description

The MCP73837 and MCP73838 devices are fully

integrated linear Li-Ion/Li-Polymer battery chargers

with autonomous power source selection. Along with its

small physical size, the low number of external

components required makes the MCP73837/8 ideally

suitable for portable applications.

The MCP73837/8 automatically selects the USB port or

AC adapter as the power source for the system. For the

USB port powered systems, the MCP73837/8

specifically adheres to the current limits governed by

the USB specification. The host microcontroller can

select from two preset maximum charge current rates

of 100 mA (low-power USB port) or 500 mA

(high-power USB port). With an AC adapter providing

power to the system, an external resistor sets the mag-

nitude of the system or charge current up to a

maximum of 1A.

The MCP73837/8 employs a constant current/constant

voltage

charge

algorithm

with

selectable

preconditioning and charge termination. The constant

voltage regulation is fixed with four available options:

4.20V, 4.35V, 4.40V or 4.50V, to accommodate the new

emerging

battery

charging

requirements.

The

MCP73837/8 limits the charge current, based on die

temperature, during high power or high ambient

conditions. This thermal regulation optimizes the

charge cycle time while maintaining the reliability of the

device .

The MCP73837/8 are fully specified over the ambient

temperature range of -40°C to +85°C.

The MCP73837/8 devices are available in either a

3 mm x 3 mm 10-lead DFN package or a 10-lead

MSOP package.

Advanced Stand-Alone Li-Ion/Li-Polymer Battery Charge

Management Controller with Autonomous AC Adapter or

USB Port Source Selection

Similar Part No. - MCP73837-AMI/MF

Manufacturer	Part #	Datasheet	Description
Microchip Technology	MCP73837	842Kb / 30P	Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection 2007
	MCP738376SIMF	842Kb / 30P	Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection 2007
	MCP738376SIUN	842Kb / 30P	Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection 2007
	MCP73837AMIMF	842Kb / 30P	Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection 2007
	MCP73837AMIUN	842Kb / 30P	Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection 2007

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Similar Description - MCP73837-AMI/MF

Manufacturer	Part #	Datasheet	Description
Microchip Technology	MCP73833	1Mb / 26P	Stand-Alone Linear Li-Ion / Li-Polymer Charge Management Controller 2006
	MCP73837	842Kb / 30P	Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection 2007
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Microchip Technology	MCP73853	799Kb / 32P	USB Compatible Li-Ion/Li-Polymer Charge Management Controllers 11/29/11 2004-2013
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MCP73837-AMI/MF Datasheet(PDF) 1 Page - Microchip Technology

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