MCP73838T-FCI/UN Microchip Technology, MCP73838T-FCI/UN Datasheet

IC,Battery Management,TSSOP,10PIN,PLASTIC

MCP73838T-FCI/UN

Manufacturer Part Number

MCP73838T-FCI/UN

Description

IC,Battery Management,TSSOP,10PIN,PLASTIC

Manufacturer

Microchip Technology

Datasheet

1.MCP73838T-FJIMF.pdf (30 pages)

Specifications of MCP73838T-FCI/UN

Function

Charge Management

Battery Type

Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)

Voltage - Supply

4.5 V ~ 6 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

10-TFSOP (0.118", 3.00mm Width)

Product

Charge Management

Output Voltage

4.2 V, 4.35 V, 4.4 V, 4.5 V

Output Current

1200 mA

Operating Supply Voltage

3.75 V to 6 V

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Mounting Style

SMD/SMT

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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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 MCP73838T-FCI/UN

MCP73838T-FCI/UN Summary of contents

Page 1

... Temperature Range: -40°C to 85°C • Packaging: - 10-Lead DFN - 10-Lead MSOP* * Consult Factory for MSOP Package Availability. © 2007 Microchip Technology Inc. MCP73837/8 Applications • Smart Phones and Personal Data Assistants (PDA) • Portable Media Players(PMP) • Ultra Mobile Devices(UMD) • ...

Page 2

... KΩ 3 STAT1 1 KΩ 4 STAT2 PROG2 5 V PROG1 BAT 9 THERM 8 PG (TE) 7 PROG2 6 PROG1 10 BAT Thermsitor 4.7 µF Single 9 Li-Ion Cell Low 6 R PROG 10 V BAT Thermsitor 4.7 µF 9 Cell Low 7 Hi Low 6 R PROG © 2007 Microchip Technology Inc. ...

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... PROG1 REFERENCE, V REF (1.21V) BIAS, UVLO, AND SHDN VO UVLO REG TERM PROG2 CHARGE CHARGE CONTROL, STAT1 TIMER, AND STATUS LOGIC STAT2 LDO PG (TE) HTVT LTVT © 2007 Microchip Technology Inc. 100 mA/500 mA 10k AC/USB 1k AC/USB 111k 310k + - 72.7k - PRECONDITION + - + 6k 157. 470.6k ...

Page 4

... OUT V =[V (typical)+1V] DD REG dB I =10 mA, 10Hz to 1 kHz OUT dB I =10 mA, 10Hz to 10 kHz OUT dB I =10 mA, 10Hz to 1 MHz OUT mA PROG1 = 10 kΩ mA PROG1 = 1 kΩ, Note 2 T =-5°C to +55° USB © 2007 Microchip Technology Inc. ...

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... USB-Port. 2: The value is guaranteed by design and not production tested. 3: The current is based on the ratio of selected current regulation (I 4: The maximum charge impedance has to be less than shutdown impedance for normal operation. © 2007 Microchip Technology Inc REG = [V (typical) + 1.0V] DD ...

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... THERM V V Low to High High to Low µA Stand-by Or System Test Mode µF I < 250 mA OUT µF I > 250 mA OUT V 2.3V < V < V BAT REG V Falling 2.3V < V < V BAT REG V Rising DD °C ° USB © 2007 Microchip Technology Inc. ...

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... Operating Temperature Range Storage Temperature Range Thermal Package Resistances Thermal Resistance, 10-Lead MSOP Thermal Resistance, 10-Lead DFN Note 1: This represents the minimum copper condition on the PCB ( Printed Circuit Board). © 2007 Microchip Technology Inc REG (typical) + 1.0V] Sym Min Typ Max t — ...

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... FIGURE 2-6: Programming Resistor (R = +25°C, Constant-voltage mode 4. Temperature (°C) Output Leakage Current ) vs. Ambient Temperature ( Floating Battery Voltage (V) Output Leakage Current ) vs. Battery Voltage (V ). BAT V = 5.2V DD Temp = 25°C R (kΩ) PROG Charge Current (I ) vs. OUT ). PROG © 2007 Microchip Technology Inc. ...

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... Charge Current (I Supply Voltage ( 1100 1050 1000 950 900 850 800 750 700 -40 -30 -20 - Ambient Temperature (°C) FIGURE 2-9: Charge Current (I Ambient Temperature ( © 2007 Microchip Technology Inc (typical and T REG OUT 110 kΩ 108 PROG Temp = +25°C 106 104 102 100 ...

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... FIGURE 2-18: THERM Rejection (PSRR). = +25°C, Constant-voltage mode 5.2V DD Ambient Temperature (°C) Thermistor Current (I THERM ). A 0 100 1000 Frequency (kHz) Power Supply Ripple = 100 mA = 4.7 µF 0 100 1000 Frequency (kHz) Power Supply Ripple © 2007 Microchip Technology Inc. ) ...

Page 11

... Time (µs) FIGURE 2-20: Line Transient Response. 0. 0.3 OUT 0.25 0.2 0.15 0.1 0.05 0 -0.05 Time (Minutes) FIGURE 2-21: Load Transient Response. © 2007 Microchip Technology Inc (typical and T REG OUT 1 0.1 0.9 0.8 0 0.7 0.6 -0.1 0.5 0.4 0.3 -0.2 ...

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... Constant-voltage mode. A 0.12 0.1 0.08 0.06 0.04 0.02 = USB_Low 0 Time (Minutes) Complete Charge Cycle 0.12 0.1 0.08 0.06 C.V. Begins 0. 5. USB_Low PROG 0.02 180 mAh Li-Ion Battery Time (Minutes) Typical Charge Profile in © 2007 Microchip Technology Inc. ...

Page 13

... Charge Status Output 2 (STAT2) STAT2 is an open-drain logic output for connection to a LED for charge status indication. Alternatively, a pull-up resistor can be applied for interfacing to a host microcontroller. © 2007 Microchip Technology Inc. Table 3-1. I/O I AC-Adapter Supply Input I USB-Port Supply Input ...

Page 14

... Battery Temperature Monitor (THERM) MCP73837/8 continuously monitors temperature during a charge cycle by measuring the voltage between the THERM and µA current source provides the bias for the most common 10 kΩ negative-temperature thermistors (NTC). © 2007 Microchip Technology Inc. the battery pins. An internal coefficient ...

Page 15

... THERM DD STAT1 = LOW STAT2 = LOW PG = LOW Timer Suspended TEMPERATURE FAULT No Charge Current STAT1 = Hi-Z STAT2 = Hi LOW Timer Suspended FIGURE 4-1: Flow Chart. © 2007 Microchip Technology Inc. * SHUTDOWN MODE* Continuously Monitored V V < - 100 mV DD BAT V < STOP STAT1 = Hi-Z ...

Page 16

... PROG1/2 pin is opened, the MCP73837/8 enters the Stand-by mode where it remains until a battery is reinserted or the PROG1/2 pin Characteristics” for pin rises above the BAT . The SS 1000V I = ---------------- - REG R PROG is in REG from a USB-Port, the host ., REG © 2007 Microchip Technology Inc. ...

Page 17

... Li-Ion batteries to prolong the life of Li-Ion batteries while keeping their capacity at healthy level. © 2007 Microchip Technology Inc. 4.9 Thermal Regulation The MCP73837/8 limits the charge current based on the die temperature. The thermal regulation optimizes the charge cycle time while maintaining device reliability ...

Page 18

... LEDs. Optionally, the charge status outputs can be used as an interface to a host microcontroller. the status outputs during a charge cycle. pins BAT with a minimum SS - 100 mV) with no battery DD is disabled during shutdown, Table 5-1 summarizes the state of © 2007 Microchip Technology Inc. ...

Page 19

... REG MCP73837 will pulse the PG output as the device determines if a battery is present. The PG option is available only on MCP73837. © 2007 Microchip Technology Inc. 5.2.4 TIMER ENABLE (TE) OPTION The timer enable (TE) input option is used to enable or disable the internal timer. A low signal on this pin enables the internal timer and a high signal disables the internal timer ...

Page 20

... Preconditioning mode to the Constant-current mode. In this case, the power dissipation is: Figure 6-1 depicts a typical stand- Figure 6-2 depict the accompanying charge 10 BAT Thermsitor C Single OUT 9 Li-Ion Cell Low 6 R PROG has transitioned from the Figure 6-1 is © 2007 Microchip Technology Inc. ...

Page 21

... The current regulation set input pin (PROG1/2) can be used to terminate a charge at any time during the charge cycle, as well as to initiate a charge cycle or initiate a recharge cycle. © 2007 Microchip Technology Inc. Placing a programming resistor from the PROG1 input driving PROG2 to logic High or Low enables ...

Page 22

... BACA MCP73838T-FCI/MF BACA BACB MCP73838T-FJI/MF BACB BACC MCP73838T-NVI/MF BACC Marking Marking Part Number * Code Code 837FCI MCP73837T-FCI/UN 837FCI 837FJI MCP73837T-FJI/UN 837FJI 837NVI MCP73837T-NVI/UN 837NVI 838FCI MCP73838T-FCI/UN 838FCI 838FJI MCP73838T-FJII/UN 838FJI 838NVI MCP73838T-NVI/UN 838NVI Example BABA 2 9 0748 3 8 256 Example: 837FCI ...

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... PG function on pin 8 MCP73837T: 1A Fully Integrated Charger, PG function on pin 8 (Tape and Reel) MCP73838: 1A Fully Integrated Charger, TE function on pin 8 MCP73838T: 1A Fully Integrated Charger, TE function on pin 8 (Tape and Reel) Output Options * * * Refer to table below for different operational options Consult Factory for Alternative Device Options. ...

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... PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 30

... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2007 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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