MCP73831-5ACI/MC Microchip Technology, MCP73831-5ACI/MC Datasheet

MCP73831-5ACI/MC

Manufacturer Part Number

MCP73831-5ACI/MC

Description

IC,Battery Management,LLCC,8PIN,PLASTIC

Manufacturer

Microchip Technology

Datasheet

1.MCP73831T-2DCIOT.pdf (28 pages)

Specifications of MCP73831-5ACI/MC

Function

Charge Management

Battery Type

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

Voltage - Supply

3.75 V ~ 6 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

8-VFDFN Exposed Pad

Product

Charge Management

Output Voltage

4.5 V

Output Current

15 mA to 500 mA

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

Current page: 1 of 28
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Features

• Linear Charge Management Controller:

• High Accuracy Preset Voltage Regulation: + 0.75%

• Four Voltage Regulation Options:

• Programmable Charge Current: 15 mA to 500 mA

• Selectable Preconditioning:

• Selectable End-of-Charge Control:

• Charge Status Output

• Automatic Power-Down

• Thermal Regulation

• Temperature Range: -40°C to +85°C

• Packaging:

Applications

• Lithium-Ion/Lithium-Polymer Battery Chargers

• Personal Data Assistants

• Cellular Telephones

• Digital Cameras

• MP3 Players

• Bluetooth Headsets

• USB Chargers

Typical Application

4.7 μF

- Integrated Pass Transistor

- Integrated Current Sense

- Reverse Discharge Protection

- 4.20V, 4.35V, 4.40V, 4.50V

- 10%, 20%, 40%, or Disable

- 5%, 7.5%, 10%, or 20%

- Tri-State Output - MCP73831

- Open-Drain Output - MCP73832

- 8-Lead, 2 mm x 3 mm DFN

- 5-Lead, SOT-23

470Ω

500 mA Li-Ion Battery Charger

Miniature Single-Cell, Fully Integrated Li-Ion,

Li-Polymer Charge Management Controllers

STAT

MCP73831

PROG

BAT

4.7 μF

2 kΩ

Single

Li-Ion

Cell

Description:

The MCP73831/2 devices are highly advanced linear

charge management controllers for use in space-lim-

ited, cost-sensitive applications. The MCP73831/2 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 MCP73831/2 ideally suited for

portable applications. For applications charging from a

USB port, the MCP73831/2 adhere to all the

specifications governing the USB power bus.

The MCP73831/2 employ a constant-current/constant-

voltage charge algorithm with selectable precondition-

ing and charge termination. The constant voltage

regulation is fixed with four available options: 4.20V,

4.35V, 4.40V or 4.50V, to accommodate new, emerging

battery charging requirements. The constant current

value is set with one external resistor. The MCP73831/

2 devices limit the charge current based on die temper-

ature during high power or high ambient conditions.

This thermal regulation optimizes the charge cycle time

while maintaining device reliability.

Several options are available for the preconditioning

threshold, preconditioning current value, charge

termination value and automatic recharge threshold.

The preconditioning value and charge termination

value are set as a ratio, or percentage, of the

programmed constant current value. Preconditioning

can be disabled. Refer to Section 1.0 “Electrical

Characteristics” for available options and the “Prod-

uct Identification System” for standard options.

The MCP73831/2 devices are fully specified over the

ambient temperature range of -40°C to +85°C.

Package Types

MCP73831/2

BAT

* Includes Exposed Thermal Pad (EP); see

MCP73831/2

2×3 DFN*

5 STAT

PROG

STAT

BAT

MCP73831/2

SOT-23-5

DS21984E-page 1

Table

PROG

3-1.

Related parts for MCP73831-5ACI/MC

MCP73831-5ACI/MC Summary of contents

Page 1

... The constant current value is set with one external resistor. The MCP73831/ 2 devices limit the charge current based on die temper- ature during high power or high ambient conditions. ...

... V BAT 477 kΩ 255 kΩ 100 kΩ DS21984E-page 2 43.6 kΩ 361 kΩ 3.9 kΩ kΩ PRECONDITION 182.3 kΩ kΩ - TERMINATION + - 7 kΩ CHARGE 190 kΩ + SHDN - DIRECTION + CONTROL - + UVLO - V BAT CA + MCP73831 ONLY - V DD STAT © 2008 Microchip Technology Inc. ...

Page 3

... MCP73831/2 (typical) + 0.3V -40°C to +85°C. A Units Conditions V µA Charging µA Charge Complete, No Battery µA PROG Floating µA V < mV) DD BAT µA V < ...

Page 4

... T = 105° µA PROG Floating µA V Floating DD µA V < STOP µA Charge Complete SINK (MCP73831) SOURCE µA High-Impedance kΩ kΩ 3.5V ≤ V ≤ V BAT REG V Falling DD 3.5V ≤ V ≤ V BAT BAT REG V Rising DD °C °C © 2008 Microchip Technology Inc. ...

Page 5

... Sym. Min. Typ. Max. T -40 — + -40 — +125 J T -65 — +150 A θ — 230 — JA θ — 76 — JA MCP73831 (typical) + 0.3V] to 12V, REG Conditions V Low-to-High DD V < > V BAT PTH BAT PTH I Rising to 90 OUT REG Average I Falling OUT Average V BAT SINK I ...

Page 6

Page 7

... FIGURE 2-5: ). Supply Voltage (V A 516 514 512 510 508 506 504 502 500 4.50 4.00 4.20 FIGURE 2-6: Supply Voltage (V MCP73831/2 = +25°C, Constant-Voltage mode. A Programming Resistor (kΩ) Charge Current (I ) vs. OUT ). PROG kΩ PROG 4.75 5.00 5.25 5.50 5.75 6.00 ...

Page 8

... MCP73831/2 TYPICAL PERFORMANCE CURVES (CONTINUED) Note: Unless otherwise indicated 104 103 102 101 100 Ambient Temperature (°C) FIGURE 2-7: Charge Current (I Ambient Temperature ( 516 514 512 510 508 506 504 502 500 Ambient Temperature (°C) FIGURE 2-8: Charge Current (I Ambient Temperature (T ) ...

Page 9

... A 0.10 0.05 0.00 -0.05 -0.10 -0.15 -0.20 -0. 4.7 µF, X7R Ceramic OUT -0.30 Time (µs) Load Transient Response. 120 100 MCP73831-2AC/IOT kΩ PROG 0 Time (minutes) Complete Charge Cycle 600 500 400 300 200 100 = 2 kΩ 0 Time (minutes) Complete Charge Cycle ...

Page 10

Page 11

... Charge Status Output (STAT) STAT is an output for connection to an LED for charge status indication. Alternatively, a pull-up resistor can be applied for interfacing to a host microcontroller. STAT is a tri-state logic output on the MCP73831 and an open-drain output on the MCP73832. © 2008 Microchip Technology Inc. Table 3-1 ...

Page 12

Page 13

... Characteristics” for preconditioning threshold options and the Product Identification System for standard options. In this mode, the MCP73831/2 supply a percentage of the charge current (established with the value of the resistor connected to the PROG pin) to the battery. The percentage or ratio of the current is factory set. Refer to Section 1.0 preconditioning current options and the ” ...

Page 14

... Identification System” for standard options. DS21984E-page 14 4.8 Thermal Regulation The MCP73831/2 limit the charge current based on the die temperature. The thermal regulation optimizes the charge cycle time while maintaining device reliability. Figure 4-2 depicts the thermal regulation for the MCP73831/2 ...

Page 15

... MCP73831/2 5.2 Digital Circuitry 5.2.1 STATUS INDICATOR (STAT) The charge status output of the MCP73831 has three different states: High (H), Low (L), and High-Imped- ance (Hi-Z). The charge status output of the MCP73832 is open-drain, and, as such, has two different states: Low (L), and High-Impedance (Hi-Z). ...

Page 16

Page 17

... APPLICATIONS The MCP73831/2 are designed to operate in conjunc- tion with a host microcontroller stand-alone application. The MCP73831/2 provide the preferred charge algorithm for Lithium-Ion and Lithium-Polymer C IN REGULATED WALL CUBE FIGURE 6-1: Typical Application Circuit. 6.0 5.0 4.0 3.0 2.0 MCP73831-2AC/IOT V = 5.2V 1 ...

Page 18

... Alternatively, the 2mm x 3mm DFN package could be utilized to reduce charge cycle times. 6.1.1.3 External Capacitors The MCP73831/2 are stable with or without a battery load. In order to maintain good AC stability in the Con- stant-Voltage mode, a minimum capacitance of 4.7 µF is recommended to bypass the V BAT capacitance provides compensation when there is no battery load ...

Page 19

... MCP73832T-2ATI/MC AAM MCP73832T-2DCI/MC AAP MCP73832T-3ACI/MC AAQ MCP73832T-4ADI/MC AAR MCP73832T-5ACI/MC AAS Note: Applies to 8-Lead DFN Device Code MCP73831T-2ACI/OT KDNN MCP73831T-2ATI/OT KENN MCP73831T-2DCI/OT KFNN MCP73831T-3ACI/OT KGNN MCP73831T-4ADI/OT KHNN MCP73831T-5ACI/OT KJNN MCP73832T-2ACI/OT KKNN MCP73832T-2ATI/OT KLNN MCP73832T-2DCI/OT KMNN MCP73832T-3ACI/OT KPNN MCP73832T-4ADI/OT KQNN MCP73832T-5ACI/OT KRNN MCP73832T-2DFI/OT ...

Page 20

Page 21

... Microchip Technology Inc. MCP73831/2 DS21984E-page 21 ...

Page 22

Page 23

... Numerous edits throughout document. 2. Added note to Temperature Specifications table. 3. Updated Figure 2-4. Revision B (March 2006) The following is the list of modifications: 1. Added MCP73832 through document. Revision A (November 2005) • Original Release of this Document. © 2008 Microchip Technology Inc. Added and added MCP73831/2 DS21984E-page 19 ...

Page 24

Page 25

... Consult Factory for Alternate Device Options MCP73831/2 . MCP73831-2ACI/OT: 4.20V V , REG Options AC, 5LD SOT23 Pkg MCP73831T-2ACI/OT: Tape and Reel, 4.20V V , Options AC, 5LD SOT23 Pkg REG MCP73832-2ACI/MC: 4.20V V , REG Options AC, 8LD DFN Package MCP73832T-2ACI/MC: Tape and Reel, 4.20V V , Options AC, 8LD DFN Package REG MCP73831-2ATI/OT: 4 ...

Page 26

Page 27

... PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, 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 28

... 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 © 2008 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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