MCP738376SIMF MICROCHIP [Microchip Technology], MCP738376SIMF Datasheet

MCP738376SIMF

Manufacturer Part Number

MCP738376SIMF

Description

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

Manufacturer

MICROCHIP [Microchip Technology]

Datasheet

1.MCP738376SIMF.pdf (30 pages)

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Features

• High Accuracy Preset Voltage Regulation: + 0.5%

• Available Voltage Regulation Options:

• Complete Linear Charge Management Controller:

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

• Selectable USB-Port Charge Current:

• Programmable AC-Adapter Charge Current:

• Two Charge Status Outputs

• Power-Good Monitor: MCP73837

• Timer Enable: MCP73838

• Automatic Recharge:

• Automatic End-of-Charge Control:

• Preconditioning of Deeply Depleted Cells - can be

• Battery Cell Temperature Monitor

• UVLO (Undervoltage Lockout)

• Automatic Power-Down when Input Power is

• Low-Dropout (LDO) Linear Regulator Mode

• Numerous Selectable Options Available for a

• Temperature Range: -40°C to 85°C

• Packaging:

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

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

- Autonomous Power Source Selection

- Integrated Pass Transistors

- Integrated Current Sense

- Integrated Reverse Discharge Protection

Operation with Thermal Regulation

- Low: 1 Unit Load / High: 5 Unit Loads

- 15 mA - 1000 mA

- Selectable Voltage Threshold

- Selectable Charge Termination Current Ratio

- Selectable Safety Timer Period

disabled

Removed

Variety of Applications:

- Refer to Section 1.0 “Electrical

- Refer to the “Product Identification

- 10-Lead 3 mm x 3 mm DFN

- 10-Lead MSOP*

Management Controller with Autonomous AC-Adapter or

Characteristics” for Selectable Options”

System” for Standard Options

* Consult Factory for MSOP Package

Availability.

USB-Port Source Selection

Applications

• Smart Phones and Personal Data Assistants

• 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 magnitude

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 accommodated 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 device

reliability.

The MCP73837/8 are fully specified over the ambient

temperature range of -40°C to +85°C.

The MCP73837/8 devices are available in a 10-Lead,

3 mm x 3 mm, DFN package or in a 10-Lead MSOP

package.

MCP73837/8

(PDA)

DS22071A-page 1

Related parts for MCP738376SIMF

MCP738376SIMF Summary of contents

Page 1

Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection Features • High Accuracy Preset Voltage Regulation: + 0.5% • Available Voltage Regulation Options: - 4.20V, 4.35V, 4.4V, or 4.5V • Complete Linear Charge ...

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MCP73837/8 Package Types MCP73837/8 10-Lead DFN USB 3 STAT1 4 STAT2 Typical Applications Ac-dc Adapter USB Port 4.7 µF 4.7 µF Ac-dc Adapter USB Port 4.7 µF ...

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Functional Block Diagram (MCP73837/8) DIRECTION CONTROL V USB SENSEFET G=0.001 SENSEFET G=0.001 DIRECTION CONTROL V AC SENSEFET G=0.001 SENSEFET G=0.001 PROG1 REFERENCE, V REF (1.21V) BIAS, UVLO, AND SHDN VO UVLO REG TERM PROG2 CHARGE CHARGE CONTROL, STAT1 TIMER, AND ...

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MCP73837/8 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings† V ................................................................................7. All Inputs and Outputs w.r.t. V ............... -0 Maximum Junction Temperature, T ............Internally Limited J Storage temperature .....................................-65°C to +150°C ESD protection on all pins Human ...

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DC CHARACTERISTICS (Continued) Electrical Specifications: Unless otherwise indicated, all limits apply for -40°C to +85°C. Typical values are at +25° Parameters USB-Port Fast Charge Current Maximum Output Current Limit Precondition Current Regulation (Trickle Charge Constant-Current ...

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MCP73837/8 DC CHARACTERISTICS (Continued) Electrical Specifications: Unless otherwise indicated, all limits apply for -40°C to +85°C. Typical values are at +25° Parameters Timer Enable (TE) Input High Voltage Level Input Low Voltage Level Input Leakage ...

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AC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, all limits apply for V Typical values are at +25° REG Parameters UVLO Start Delay Current Regulation Transition Time Out of Precondition Current Rise Time Out of Precondition Precondition ...

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MCP73837/8 2.0 TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested ...

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Note: Unless otherwise indicated 1200 1150 1100 1050 1000 950 900 850 800 750 700 4.5 4.8 5.0 5.3 5.5 Supply Voltage (V) FIGURE 2-7: Charge Current (I Supply Voltage ( 104 102 100 98 96 ...

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MCP73837/8 Note: Unless otherwise indicated 600 550 500 450 400 350 300 250 200 150 100 50 0 Junction Temperature (°C) FIGURE 2-13: Charge Current (I Junction Temperature ( 120 110 100 ...

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Note: Unless otherwise indicated 100 mA OUT 0 Time (µs) FIGURE 2-19: Line Transient Response OUT ...

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MCP73837/8 Note: Unless otherwise indicated UVLOVAC FIGURE 2-25: V UVLO Start Delay USB (USB = High) 5.0 4.0 3.0 2 5. Ω PROG 1200 mAh Li-Ion Battery 0.0 Time (Minutes) ...

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PIN DESCRIPTION The descriptions of the pins are listed in TABLE 3-1: PIN FUNCTION TABLES Pin Number Symbol MSOP-10 DFN- USB 3 3 STAT1 4 4 STAT2 ...

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MCP73837/8 3.8 USB-Port Current Regulation Set (PROG2) The MCP73837/8 USB-Port current regulation set input (PROG2 digital input selection. A logic Low selects a 1 unit load charge current; a logic High selects a 5 unit loads charge current. ...

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DEVICE OVERVIEW The MCP73837/8 devices are simple, yet fully integrated linear charge management controllers. operational flow algorithm. SYSTEM TEST (LDO) MODE V > (V -100 mV) THERM DD STAT1 = LOW STAT2 = LOW PG = LOW Timer Suspended ...

Page 16

MCP73837/8 4.1 Undervoltage Lockout (UVLO) An internal undervoltage lockout (UVLO) circuit monitors the input voltage and keeps the charger in shutdown mode until the input supply rises above the UVLO threshold. The UVLO circuitry has a built-in hysteresis of 75 ...

Page 17

If the input power is removed, the MCP73837 Shutdown. When the input power is reapplied, a normal start-up sequence ensues. 4.6 Constant Voltage Mode When the voltage at the V pin reaches the BAT regulation voltage, ...

Page 18

MCP73837/8 5.0 DETAILED DESCRIPTION 5.1 Analog Circuitry 5.1.1 BATTERY MANAGEMENT INPUT SUPPLY ( The V input is the input supply to the MCP73837/8. DD The MCP73837/8 can be supplied by either AC- Adapter ( USB-Port (V ...

Page 19

USB-PORT CURRENT REGULATION SELECT (PROG2) For the MCP73837/8, driving the PROG2 input to a logic Low selects the low charge current setting (maximum 100 mA). Driving the PROG2 input to a logic High selects the high charge current setting ...

Page 20

MCP73837/8 6.0 APPLICATIONS The MCP73837/8 devices are designed to operate in conjunction with a host microcontroller or in stand- alone applications. The MCP73837/8 devices provide the preferred charge algorithm for Lithium-Ion and USB Port C IN1 REGULATED C IN2 WALL ...

Page 21

EQUATION 6-1: ( PowerDissipation = V – V DDMAX PTHMIN Where the maximum input voltage DDMAX I = the maximum fast charge current REGMAX V = the minimum transition threshold PTHMIN voltage For example, power dissipation with a ...

Page 22

MCP73837/8 7.0 PACKAGING INFORMATION 7.1 Package Marking Information 10-Lead DFN Part Number * 1 10 XXXX 2 9 MCP73837-FCI/MF XYWW 3 8 MCP73837-FJI/MF NNN 4 7 MCP73837-NVI/ MCP73838-FCI/MF MCP73838-FJI/MF MCP73838-NVI/MF * Consult Factory for Alternative Device Options. 10-Lead ...

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PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office PART NO Device Output Temp. Package Options* Device: MCP73837: 1A Fully Integrated Charger, PG function ...

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Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families ...

Page 30

W ORLDWIDE AMERICAS ASIA/PACIFIC Corporate Office Asia Pacific Office 2355 West Chandler Blvd. Suites 3707-14, 37th Floor Chandler, AZ 85224-6199 Tower 6, The Gateway Tel: 480-792-7200 Harbour City, Kowloon Fax: 480-792-7277 Hong Kong Technical Support: Tel: 852-2401-1200 http://support.microchip.com Fax: 852-2401-3431 ...

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