MCP73831-2ACI/OT MICROCHIP [Microchip Technology], MCP73831-2ACI/OT Datasheet

MCP73831-2ACI/OT

Manufacturer Part Number

MCP73831-2ACI/OT

Description

Miniature Single-Cell, Fully Integrated Li-Ion, Li-Polymer Charge Management Controllers

Manufacturer

MICROCHIP [Microchip Technology]

Datasheet

1.MCP73831-2ACIOT.pdf (24 pages)

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MCP73831-2ACI/OT

Manufacturer:

MICROCHIP/微芯

Quantity:

20 000

Current page: 1 of 24
Download datasheet (697Kb)

Features:

• Linear Charge Management Controller:

• High Accuracy Preset Voltage Regulation: + 0.75%

• Four Voltage Regulation Options:

• Programmable Charge Current

• 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 F

- Integrated Pass Transistor

- Integrated Current Sense

- Reverse Discharge Protection

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

- Tri-State Output - MCP73831

- Open-Drain Output - MCP73832

- 8-Lead, 2 mm x 3 mm DFN

- 5-Lead, SOT23

470

500 mA Li-Ion Battery Charger

Miniature Single-Cell, Fully Integrated Li-Ion,

Li-Polymer Charge Management Controllers

STAT

MCP73831

PROG

BAT

4.7 F

2 k

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, SOT23 package. Along with their small

physical size, the low number of external components

required make the MCP73831/2 ideally suited for por-

table 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, emerg-

ing battery charging requirements. The constant cur-

rent value is set with one external resistor. The

MCP73831/2 devices limit the charge current based

on die temperature 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 termi-

nation 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 dis-

abled. Refer to Section 1.0 “Electrical Characteris-

tics” for available options and the “Product

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

STAT

BAT

SOT23-5

PROG

BAT

(2 mm x 3 mm)

8-Lead DFN

DS21984B-page 1

PROG

STAT

Related parts for MCP73831-2ACI/OT

MCP73831-2ACI/OT Summary of contents

Page 1

... DFN package or a 5-Lead, SOT23 package. Along with their small physical size, the low number of external components required make the MCP73831/2 ideally suited for por- table applications. For applications charging from a USB port, the MCP73831/2 adhere to all the specifications governing the USB power bus ...

Page 2

... G=0.001 6 mA 0.5 mA PROG REFERENCE GENERATOR V (1.22V) REF 111 k 111 k 0 BAT 477 k 255 k 100 DS21984B-page 2 43.6 k 361 k 3 PRECONDITION 182 TERMINATION + - 7 k CHARGE 190 k + SHDN - DIRECTION + CONTROL - + UVLO - V BAT CA + MCP73831 ONLY - V DD STAT © 2006 Microchip Technology Inc. ...

Page 3

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

Page 4

Page 5

... Typ. Max. T -40 — + -40 — +125 J T -65 — +150 A — 230 — JA — 76 — JA MCP73831 (typ.) + 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 ...

Page 6

... Battery Regulation Voltage (V) FIGURE 2-3: Output Leakage Current (I ) vs. Battery Regulation Voltage DISCHARGE (V ). BAT DS21984B-page (typ and T REG OUT 550 MCP73831-2 500 450 OUT 400 350 300 = 100 mA OUT 250 200 = 450 mA 150 OUT 100 50 0 5.75 6.00 2 FIGURE 2-4: Programming Resistor (R ...

Page 7

... R AC PROG I = 100 mA OUT - 4.7 µF, X7R Ceramic OUT -20 -30 -40 -50 -60 0.01 ) vs. FIGURE 2-12: OUT Rejection (PSRR). MCP73831/2 = +25°C, Constant-Voltage mode Ω R PROG Junction Temperature (°C) Charge Current (I ) vs. OUT ). J = 4.7 µF, X7R Ceramic 0 100 1000 Frequency (kHz) Power Supply Ripple ...

Page 8

... FIGURE 2-16: 0.10 6.0 0.05 5.0 0.00 4.0 -0.05 3.0 -0.10 -0.15 2.0 MCP73831-2AC/IOT -0.20 V 1.0 -0.25 R -0.30 0.0 FIGURE 2-17: (180 mAh Li-Ion Battery). 0.04 6.0 0.02 5.0 0.00 4.0 -0.02 -0.04 3.0 -0.06 2.0 -0.08 MCP73831-2AC/IOT V = 5.2V 1.0 DD -0.10 R PROG -0.12 0.0 FIGURE 2-18: (1000 mAh Li-Ion Battery). = +25°C, Constant-Voltage mode. 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 5. Ω PROG 0 Time (minutes) Complete Charge Cycle ...

Page 9

... 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. © 2006 Microchip Technology Inc. Function ...

Page 10

... 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. ...

Page 11

... Refer to Section 1.0 “Electrical Characteristics” for charge termination current options and the “Product Identification System” for standard options. The charge current is latched off and the MCP73831/2 enter a Charge Complete mode. 4.7 Automatic Recharge The MCP73831/2 continuously monitor the voltage at the V pin in the Charge Complete mode ...

Page 12

... DS21984B-page 12 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 differ- ent states: Low (L), and High-Impedance (Hi-Z). The charge charge status output can be used to illuminate tri-color LEDs ...

Page 13

... 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 Ω R PROG 0.0 Time (minutes) FIGURE 6-2: Typical Charge Profile (180 mAh Battery) ...

Page 14

... Figure 6-3. 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 recommended to bypass the V BAT capacitance provides compensation when there is no battery load ...

Page 15

... 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 Note: Applies to 5-Lead SOT-23 ...

Page 16

... MCP73831/2 8-Lead Plastic Dual-Flat, No-Lead Package (MC) 2x3x0.9 mm Body (DFN) – Saw Singulated D PIN 1 ID INDEX AREA (NOTE 1) TOP VIEW A3 Dimension Limits Number of Pins Pitch Overall Height Standoff Contact Thickness Overall Length Overall Width Exposed Pad Length Exposed Pad Width Contact Length § ...

Page 17

... A2 .035 .043 .051 A1 .000 .003 .006 E .102 .110 .118 E1 .059 .064 .069 D .110 .116 .122 L .014 .018 .022 .004 .006 .008 B .014 .017 .020 MCP73831/2 A2 MILLIMETERS MIN NOM MAX 5 0.95 1.90 0.90 1.18 1.45 0.90 1.10 1.30 0.00 0.08 0.15 2.60 2.80 3.00 1.50 1.63 1.75 2.80 2.95 3.10 0.35 0.45 0. 0.09 0.15 0.20 0.35 0.43 0. ...

Page 18

Page 19

... APPENDIX A: REVISION HISTORY Revision B (March 2006) • Added MCP73832 through document. Revision A (November 2005) • Original Release of this Document. © 2006 Microchip Technology Inc. MCP73831/2 DS21984B-page 19 ...

Page 20

Page 21

... 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 ...

Page 22

Page 23

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 24

W ORLDWIDE AMERICAS ASIA/PACIFIC Corporate Office Australia - Sydney 2355 West Chandler Blvd. Tel: 61-2-9868-6733 Chandler, AZ 85224-6199 Fax: 61-2-9868-6755 Tel: 480-792-7200 China - Beijing Fax: 480-792-7277 Tel: 86-10-8528-2100 Technical Support: Fax: 86-10-8528-2104 http://support.microchip.com China - Chengdu Web Address: Tel: ...

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