BQ24079 Charger Datasheet

BQ24079 Datasheet PDF, Equivalent


Part Number

BQ24079

Description

Standalone 1-Cell 1.5-A Linear Battery Charger

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download BQ24079 Datasheet


BQ24079
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
BQ24072, BQ24073, BQ24074, BQ24075, BQ24079
SLUS810M – SEPTEMBER 2008 – REVISED AUGUST 2019
BQ2407x Standalone 1-Cell 1.5-A Linear Battery Charger with PowerPath
1 Features
1 Fully compliant USB charger
– Selectable 100-mA and 500-mA maximum
input current
– 100-mA Maximum current limit ensures
compliance to USB-IF standard
– Input-based dynamic power management (VIN-
DPM) for protection against poor USB sources
• 28-V Input Rating with Overvoltage Protection
• Integrated dynamic power path management
(DPPM) function simultaneously and
independently powers the system and charges the
battery
• Supports up to 1.5-A charge current with current
monitoring output (ISET)
• Programmable input current limit up to 1.5 A for
wall adapters
• System output tracks battery voltage (bq24072)
• Programmable termination current (bq24074)
• Battery disconnect function with SYSOFF input
(bq24075, bq24079)
• Programmable Pre-charge and Fast-charge safety
timers
• Reverse current, short-circuit and thermal
protection
• NTC thermistor input
• Proprietary start-up sequence limits inrush current
• Status indication – Charging/done, power good
2 Applications
• Smart phones
• Portable media players
• Portable navigation devices
• Low-power handheld devices
3 Description
The BQ2407x series of devices are integrated Li-Ion
linear chargers and system power path management
devices targeted at space-limited portable
applications. The devices operate from either a USB
port or an AC adapter and support charge currents up
to 1.5 A. The input voltage range with input
overvoltage protection supports unregulated
adapters. The USB input current limit accuracy and
start up sequence allow the BQ2407x to meet USB-IF
inrush current specifications. Additionally, the input
dynamic power management (VIN-DPM) prevents the
charger from crashing incorrectly configured USB
sources.
The BQ2407x features dynamic power path
management (DPPM) that powers the system while
simultaneously and independently charging the
battery. The DPPM circuit reduces the charge current
when the input current limit causes the system output
to fall to the DPPM threshold; thus, supplying the
system load at all times while monitoring the charge
current separately. This feature reduces the number
of charge and discharge cycles on the battery, allows
for proper charge termination and enables the system
to run with a defective or absent battery pack.
PART NUMBER
BQ24072
BQ24073
BQ24074
BQ24075
BQ24079
Device Information(1)
PACKAGE
BODY SIZE (NOM)
VQFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application Circuit
1 kW
1 kW
IN
1 mF
System
ON/OFF
Control
IN
13
8 VSS
BQ24075
BQ24079
15 SYSOFF
OUT 10
11
EN 2 5
BAT 2
3
TS 1
4.7 mF
SYSTEM
4.7 mF
TEMP
PACK+
1.18 kW 1.13 kW
PACK-
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

BQ24079
BQ24072, BQ24073, BQ24074, BQ24075, BQ24079
SLUS810M – SEPTEMBER 2008 – REVISED AUGUST 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 4
6 Device Comparison Table..................................... 5
7 Pin Configuration and Functions ......................... 6
8 Specifications......................................................... 8
8.1 Absolute Maximum Ratings ..................................... 8
8.2 ESD Ratings.............................................................. 8
8.3 Recommended Operating Conditions....................... 8
8.4 Thermal Information .................................................. 9
8.5 Electrical Characteristics......................................... 10
8.6 Typical Characteristics ............................................ 12
9 Detailed Description ............................................ 15
9.1 Overview ................................................................. 15
9.2 Functional Block Diagram ....................................... 16
9.3 Feature Description................................................. 17
9.4 Device Functional Modes........................................ 29
10 Application and Implementation........................ 31
10.1 Application Information.......................................... 31
10.2 Typical Application ................................................ 31
10.3 System Examples ................................................. 36
11 Power Supply Recommendations ..................... 37
12 Layout................................................................... 37
12.1 Layout Guidelines ................................................. 37
12.2 Layout Example .................................................... 38
12.3 Thermal Considerations ........................................ 39
13 Device and Documentation Support ................. 40
13.1 Device Support...................................................... 40
13.2 Related Links ........................................................ 40
13.3 Receiving Notification of Documentation Updates 40
13.4 Community Resources.......................................... 40
13.5 Trademarks ........................................................... 40
13.6 Electrostatic Discharge Caution ............................ 40
13.7 Glossary ................................................................ 40
14 Mechanical, Packaging, and Orderable
Information ........................................................... 41
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision L (June 2018) to Revision M
Page
• Changed the document title ................................................................................................................................................... 1
• Changed the Device Comparison Table................................................................................................................................. 5
• Deleted the Dissipation Ratings table................................................................................................................................... 10
• Changed VIN-LOW To VIN-DPM in the Functional Block Diagram .............................................................................................. 16
• Changed text From: "the DPPM loop or the VIN-(LOW) loop." To: "the DPPM loop or the VIN-DPM loop." in the Battery
Charging secton.................................................................................................................................................................... 23
• Chganged text From: " input voltage has fallen to VIN(LOW)" To: "input voltage has fallen to VIN-DPM" in the Dynamic
Charge Timers (TMR Input) scrtion ...................................................................................................................................... 26
• Changed Equation 11 .......................................................................................................................................................... 39
Changes from Revision K (March 2015) to Revision L
Page
• Deleted MARKINGS from the Device Comparison Table ...................................................................................................... 5
• Added the RGT0016B and RGT0016C package information to the Device Comparison Table ........................................... 5
• Changed the Pinout images and descriptions ....................................................................................................................... 6
• Change description of the CE pin From: "Connect CE to a high logic level to place the battery charger in standby
mode. In standby mode,..." To ""Connect CE to a high logic level to disable battery charging. OUT is active and
battery supplement mode is still available."............................................................................................................................ 7
• "Changed text in the third paragraph of the Power On section From: When VOUT is above VSC,..." To: "When VOUT is
above VO(SC1),..." ................................................................................................................................................................... 17
• Changed text From: "The valid resistor range is 590 to 5.9 k." To: "The valid resistor range is 590 to 8.9 k."
in the Battery Charging section ............................................................................................................................................ 23
• Changed From: VIN(DT) To: VBAT + VIN(DT) in Table 2 ............................................................................................................ 26
• Changed INTC To: ITS in Figure 24 ....................................................................................................................................... 28
2 Submit Documentation Feedback
Copyright © 2008–2019, Texas Instruments Incorporated
Product Folder Links: BQ24072 BQ24073 BQ24074 BQ24075 BQ24079


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity BQ24072, BQ24073, BQ24074, BQ24 075, BQ24079 SLUS810M – SEPTEMBER 200 8 – REVISED AUGUST 2019 BQ2407x Stand alone 1-Cell 1.5-A Linear Battery Charg er with PowerPath 1 Features •1 Full y compliant USB charger – Selectable 100-mA and 500-mA maximum input current – 100-mA Maximum current limit ensur es compliance to USB-IF standard – In put-based dynamic power management (VIN DPM) for protection against poor USB so urces • 28-V Input Rating with Overvo ltage Protection • Integrated dynamic power path management (DPPM) function simultaneously and independently powers the system and charges the battery • Supports up to 1.5-A charge current wi th current monitoring output (ISET) • Programmable input current limit up to 1.5 A for wall adapters • System out put tracks battery voltage (bq24072) Programmable termination current (bq2 4074) • Battery disconnect function with SYSOFF input (bq24075, bq24079) • Programmable.
Keywords BQ24079, datasheet, pdf, etcTI, Standalone, 1-Cell, 1.5-A, Linear, Battery, Charger, Q24079, 24079, 4079, BQ2407, BQ240, BQ24, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)