MCP73838 Microchip Technology Inc., MCP73838 Datasheet

MCP73838

Manufacturer Part Number

MCP73838

Description

Advanced Stand-alone Li-ion / Li-polymer Battery Charge Management Controller With Autonomous Ac-adapter Or Usb-port Source Selection

Manufacturer

Microchip Technology Inc.

Datasheet

1.MCP73838.pdf (30 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MCP73838-FCI/MF

Manufacturer:

MicrochipTechnology

Quantity:

2 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MCP73838-FJI/MF

Manufacturer:

Microchip Technology

Quantity:

135

Company:

Meier Automation Equipment Co., Limited

Part Number:

MCP73838-NVI/UN

Manufacturer:

MICROCHIP/微芯

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MCP73838T-FCI/MF

Manufacturer:

Microchip Technology

Quantity:

1 943

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MCP73838T-NVI/MF

Manufacturer:

Microchip Technology

Quantity:

135

Current page: 1 of 30
Download datasheet (838Kb)

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 MCP73838

MCP73838 Summary of contents

Page 1

... 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 ...

Page 2

... PROG1 SS MCP73837 Typical Application THERM USB 1 kΩ 3 STAT1 1 kΩ 4 STAT2 PROG2 1 kΩ PROG1 MCP73838 Typical Application THERM USB 1 KΩ 3 STAT1 1 KΩ 4 STAT2 PROG2 5 V PROG1 BAT 9 THERM 8 PG (TE) ...

Page 3

... G=0.001 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. ...

Page 5

... 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 ...

Page 6

... 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. ...

Page 7

... 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 ...

Page 8

... 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. ...

Page 9

Page 10

... OUT -20 -30 -40 -50 -60 -70 0.01 5.8 6.0 ) 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

... OUT 0 Time (µs) FIGURE 2-19: Line Transient Response OUT 0 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 0.2 0.1 -0.3 0 -0.1 -0.4 -0.5 FIGURE 2-22: 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 FIGURE 2-23 1A) ...

Page 12

... FIGURE 2-29: Preconditioning and CC-CV (180 mAh Li-Ion Battery). 1.2 0.9 0.6 0 +25°C, 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

... I Current Regulation Setting With USB-Port; Precondition Set Point for USB control. O Available on MCP73837: Power-Good Status Output (Open-Drain) I Available on MCP73838: Timer Enable; Enables Safety Timer (Active Low) I/O Thermistor Monitoring Input and Bias current; System Test (LDO) Mode Input I/O Battery Positive Input and Output Connection — ...

Page 14

... DS22071A-page 14 3.10 Timer Enable (TE) Timer Enable (TE) is available only on MCP73838. (TE) enables the built-in safety timer when pull low and disables the built-in safety timer when pull high. Note: The built-in safety timer is available for both MCP73837 and MCP73838 in the following options: Disable, 4 HR, 6 HR, and 8 HR ...

Page 15

... SYSTEM TEST (LDO) MODE V > (V -100 mV) 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 STAT2 = Hi 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

... The TE input can be used to disable the timer when the charger is supplying current to charge the battery and power the system load. The TE input is compatible with 1.8V logic. The TE option is available only on MCP73838. PG 5.2.5 DEVICE DISABLE (PROG1/2) Hi-Z ...

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

... Part Number * Code Code BABA MCP73837T-FCI/MF BABA BABB MCP73837T-FJI/MF BABB BABC MCP73837T-NVI/MF BABC 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 ...

Page 23

Page 24

Page 25

Page 26

Page 27

... Options* Device: MCP73837: 1A Fully Integrated Charger, 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. ...

Page 28

Page 29

... Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. © 2007 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K ...

Page 30

... 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 ...

Related keywords

MCP73838 datasheet
MCP73838 data sheet
MCP73838 pdf datasheet
MCP73838 component
MCP73838 part
MCP73838 distributor
MCP73838 RoHS
MCP73838 datasheet download