Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - battery management Charge management Li-Ion, Li-Po VQFN 20 (3.5x4.5) Surface-mount

4,5mmx3,5mm

ActualSize

STAT1

VCC

TTCorCMODE

ISET1

ISET2

STAT2orNC

PGND

SNS

BAT

CELLSorFBorNC

OUT

VTSB

VSS

bq24100, bq24103, bq24103A

bq24104, bq24105, bq24108, bq24109

bq24113, bq24113A, bq24115

www.ti.com

SLUS606O –JUNE 2004–REVISED MARCH 2010

SYNCHRONOUS SWITCHMODE, LI-ION AND LI-POLYMER CHARGE-MANAGEMENT

IC WITH INTEGRATED POWER FETs ( bqSWITCHER™)

Check for Samples: bq24100, bq24103, bq24103A, bq24104, bq24105, bq24108, bq24109, bq24113, bq24113A, bq24115

FEATURES

DESCRIPTION

• Ideal For Highly Efficient Charger Designs For

The bqSWITCHER™ series are highly integrated

Single-, Two- or Three-Cell Li-Ion and

Li-ion and Li-polymer switch-mode charge

Li-Polymer Battery Packs

management devices targeted at a wide range of

portable applications. The bqSWITCHER™ series

• bq24105 Also for LiFePO

Battery (see Using

offers integrated synchronous PWM controller and

bq24105 to Charge the LiFePO

Battery)

power FETs, high-accuracy current and voltage

• Integrated Synchronous Fixed-Frequency

regulation, charge preconditioning, charge status, and

PWM Controller Operating at 1.1 MHz With 0%

charge termination, in a small, thermally enhanced

to 100% Duty Cycle

QFN package. The system-controlled version

provides additional inputs for full charge management

• Integrated Power FETs For Up To 2-A Charge

under system control.

Rate

• High-Accuracy Voltage and Current Regulation The bqSWITCHER charges the battery in three

phases: conditioning, constant current, and constant

• Available In Both Stand-Alone (Built-In Charge

voltage. Charge is terminated based on user-

Management and Control) and

selectable minimum current level. A programmable

System-Controlled (Under System Command)

charge timer provides a safety backup for charge

Versions

termination. The bqSWITCHER automatically restarts

• Status Outputs For LED or Host Processor

the charge cycle if the battery voltage falls below an

Interface Indicates Charge-In-Progress, Charge

internal threshold. The bqSWITCHER automatically

enters sleep mode when V

supply is removed.

Completion, Fault, and AC-Adapter Present

Conditions

RHL PACKAGE

• 20-V Maximum Voltage Rating on IN and OUT

(TOP VIEW)

(bq24100, 03, 03A, 04, 05, 08, 09, 13, 13A, 15)

Pins

• High-Side Battery Current Sensing

• Battery Temperature Monitoring

• Automatic Sleep Mode for Low Power

Consumption

• System-Controlled Version Can Be Used In

NiMH and NiCd Applications

• Reverse Leakage Protection Prevents Battery

Drainage

• Thermal Shutdown and Protection

• Built-In Battery Detection

• Available in 20-Pin, 3,5 mm × 4,5 mm QFN

Package

APPLICATIONS

• Handheld Products

• Portable Media Players

• Industrial and Medical Equipment

• Portable Equipment

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2bqSWITCHER, PowerPAD are trademarks of Texas Instruments.

3All other trademarks are the property of their respective owners.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (39 pages)

PAGE 1
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 Actual Size 4,5 mm x 3,5 mm bq24113, bq24113A, bq24115 www.ti.
PAGE 2
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
PAGE 3
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 PACKAGE DISSIPATION RATINGS (1) PACKAGE qJA qJC TA < 40°C POWER RATING DERATING FACTOR ABOVE TA = 40°C RHL (1) 46.87°C/W 2.5°C/W 1.81 W 0.021 W/°C This data is based on using the JEDEC High-K board, and the exposed die pad is connected to a copper pad on the board. This is connected to the ground plane by a 2x3 via matrix.
PAGE 4
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.
PAGE 5
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 ELECTRICAL CHARACTERISTICS (continued) TJ = 0°C to 125°C and recommended supply voltage range (unless otherwise stated) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SLEEP COMPARATOR VSLP-ENT Sleep-mode entry threshold VSLP-EXIT Sleep-mode exit hysteresis, tdg-SLP Deglitch time for sleep mode 2.
PAGE 6
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com TERMINAL FUNCTIONS TERMINAL bq24100, bq24108, bq24109 bq24103, bq24103A bq24104 bq24105 bq24113, bq24113A bq24115 BAT 14 14 14 14 14 I Battery voltage sense input. Bypass it with a 0.1 mF capacitor to PGND if there are long inductive leads to battery. CE 16 16 16 16 16 I Charger enable input.
PAGE 7
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 TYPICAL APPLICATION CIRCUITS LOUT BQ24100 VIN CIN 1.5 KW 10 mF 1.5 KW Adapter Present 1.5 KW Done 3 IN RSNS OUT 1 10 mH Charge Battery Pack 4 IN 6 VCC 2 STAT1 PGND 18 OUT 20 COUT D1 PGND 17 Pack+ 0.1W 10 mF Pack- MMBZ18VALT1 103AT 19 STAT2 SNS 15 BAT 14 5 PG 7 TTC ISET1 8 7.5 KW RISET1 VTSB 7.5 KW CTTC ISET2 9 16 CE 9.
PAGE 8
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com TYPICAL APPLICATION CIRCUITS (continued) LOUT BQ24105 VIN 1.5 KW 10 mF CIN 1.5 KW Adapter Present 1.5 KW Done 3 IN RSNS OUT 1 10 mH Charge Battery Pack 4 IN 6 VCC 2 STAT1 PGND 18 OUT 20 COUT D1 Pack+ 0.1W 10 mF Pack- MMBZ18VALT1 PGND 17 103AT 19 STAT2 5 PG 7 TTC SNS 15 BAT 14 7.5 KW RISET1 ISET1 8 VTSB 7.
PAGE 9
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 TYPICAL OPERATING PERFORMANCE EFFICIENCY vs CHARGE CURRENT EFFICIENCY vs CHARGE CURRENT 100 100 VI = 9 V 90 90 VI = 5 V Efficiency - % Efficiency - % VI = 16 V 80 VI = 16 V 70 V(BAT) = 4.2 V 1-Cell 60 80 70 V(BAT) = 8.4 V 2-Cell 60 50 50 0 0.5 1 1.5 I(BAT) - Charge Current - A Figure 5.
PAGE 10
Submit Documentation Feedback VCC Term & Timer Disable VCC VTSB VCC VSS TTC STAT2 STAT1 CE PG VTSB VCC IN IN 0.5V 1V CE TERM OVP Charge 0.
PAGE 11
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.
PAGE 12
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.
PAGE 13
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 DETAILED DESCRIPTION The bqSWITCHER™ supports a precision Li-ion or Li-polymer charging system for one-, two-, or three-cell applications. See Figure 7 and Figure 8 for a typical charge profile.
PAGE 14
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com Temperature Qualification The bqSWITCHER continuously monitors battery temperature by measuring the voltage between the TS pin and VSS pin. A negative temperature coefficient thermistor (NTC) and an external voltage divider typically develop this voltage. The bqSWITCHER compares this voltage against its internal thresholds to determine if charging is allowed.
PAGE 15
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 The magnitude of the precharge current, IO(PRECHG), is determined by the value of programming resistor, R(ISET2), connected to the ISET2 pin.
PAGE 16
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com Charge Termination and Recharge The bqSWITCHER monitors the charging current during the voltage regulation phase. Once the termination threshold, ITERM, is detected, the bqSWITCHER terminates charge. The termination current level is selected by the value of programming resistor, R(ISET2), connected to the ISET2 pin.
PAGE 17
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 Sleep Mode The bqSWITCHER enters the low-power sleep mode if the VCC pin is removed from the circuit. This feature prevents draining the battery during the absence of VCC. Charge Status Outputs The open-drain STAT1 and STAT2 outputs indicate various charger operations as shown in Table 1.
PAGE 18
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com Timer Fault Recovery As shown in FIGURE 10, bqSWITCHER provides a recovery method to deal with timer fault conditions. The following summarizes this method. Condition 1 VI(BAT) above recharge threshold (VOREG - VRCH) and timeout fault occurs. Recovery method: bqSWITCHER waits for the battery voltage to fall below the recharge threshold.
PAGE 19
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 Battery Detection For applications with removable battery packs, bqSWITCHER provides a battery absent detection scheme to reliably detect insertion and/or removal of battery packs. POR or VRCH Detection routine runs on power up and if VBAT drops below refresh threshold due to removing battery or discharging battery.
PAGE 20
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com VBAT Battery Connected VOREG No Battery Detected 2V/cell No Battery Detected Yes Battery Detected IWAKE IBAT - IDISCHRG1 t DISCHRG1 tWAKE t DISCHRG1 Figure 12.
PAGE 21
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 Figure 13. Battery Detection Waveform When a Battery is Inserted Figure 14 shows the battery detection scheme when a battery is removed. Channel 3 is the output signal and Channel 4 is the output current. When the battery is removed, the output signal goes up due to the stored energy in the inductor and it crosses the VOREG – VRCH threshold.
PAGE 22
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com Current Sense Amplifier BQ241xx family offers a current sense amplifier feature that translates the charge current into a DC voltage. Figure 15 is a block diagram of this feature. OUT ICHARGE SNS RSNS + KISET2 BAT + - + FASTCHG Disable ISET2 RISET2 Figure 15. Current Sense Amplifier The voltage on the ISET2 pin can be used to calculate the charge current.
PAGE 23
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 bqSWITCHER SYSTEM DESIGN EXAMPLE The following section provides a detailed system design example for the bq24100. System Design Specifications: • • • • • • • 1. VIN = 16V VBAT = 4.2V (1-Cell) ICHARGE = 1.
PAGE 24
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com 2. Determine the output capacitor value (OUT) using 16 kHz as the resonant frequency: 1 ƒo + 2p ǸLOUT COUT 1 C OUT + 4p 2 ƒo C OUT + 4p 2 (16 2 L OUT 1 10 3)2 (10 10 *6) C OUT + 9.89 mF (16) Use standard value 10 mF, 25V, X5R, ±20% ceramic capacitor (i.e., Panasonic 1206 ECJ-3YB1E106M 3.
PAGE 25
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 6. Determine TTC capacitor (TTC) for the 5.0 hours safety timer using the following equation: t C TTC + CHARGE K TTC C TTC + 300 m 2.6 mńnF C TTC + 115.4 nF (22) Select standard value 100 nF, 16V, X7R, ±10% ceramic capacitor (i.e., Panasonic ECJ-1VB1C104K). Using this capacitor the actual safety timer will be 4.3 hours. 7.
PAGE 26
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com APPLICATION INFORMATION Charging Battery and Powering System Without Affecting Battery Charge and Termination RSYS LOUT BQ24100 VIN CIN 1.5 KW 10 mF 1.5 KW Adapter Present 1.5 KW Done 3 IN RSNS OUT 1 10 mH Charge 4 IN 6 VCC 2 STAT1 PGND 18 OUT 20 PGND 17 D1 COUT 0.
PAGE 27
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 Using bq24105 to Charge the LiFePO4 Battery The LiFePO4 battery has many unique features such as a high thermal runaway temperature, discharge current capability, and charge current. These special features make it attractive in many applications such as power tools. The recommended charge voltage is 3.6 V and termination current is 50 mA.
PAGE 28
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com THERMAL CONSIDERATIONS The SWITCHER is packaged in a thermally enhanced MLP package. The package includes a thermal pad to provide an effective thermal contact between the IC and the printed circuit board (PCB). Full PCB design guidelines for this package are provided in the application report entitled: QFN/SON PCB Attachment (SLUA271).
PAGE 29
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 www.ti.com SLUS606O – JUNE 2004 – REVISED MARCH 2010 PCB LAYOUT CONSIDERATION It is important to pay special attention to the PCB layout. The following provides some guidelines: • To obtain optimal performance, the power input capacitors, connected from input to PGND, should be placed as close as possible to the bqSWITCHER.
PAGE 30
bq24100, bq24103, bq24103A bq24104, bq24105, bq24108, bq24109 bq24113, bq24113A, bq24115 SLUS606O – JUNE 2004 – REVISED MARCH 2010 www.ti.com Precharge: The current is low in precharge; so, the bottom synchronous FET turns off after its minimum on-time which explains the step between Ⅹ0 V and -0.5 V. When the bottom FET and top FET are off, the current conducts through the body diode of the bottom FET which results in a diode drop below the ground potential.
PAGE 31
PACKAGE OPTION ADDENDUM www.ti.
PAGE 32
PACKAGE OPTION ADDENDUM www.ti.
PAGE 33
PACKAGE OPTION ADDENDUM www.ti.com 10-Jun-2014 (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
PAGE 34
PACKAGE MATERIALS INFORMATION www.ti.com 31-Jan-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant BQ24100RHLR VQFN RHL 20 3000 330.0 12.4 3.8 4.8 1.6 8.0 12.0 Q1 BQ24103ARHLR VQFN RHL 20 3000 330.0 12.4 3.8 4.8 1.6 8.0 12.0 Q1 BQ24103ARHLT VQFN RHL 20 250 180.0 12.4 3.8 4.8 1.6 8.0 12.
PAGE 35
PACKAGE MATERIALS INFORMATION www.ti.com 31-Jan-2014 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ24100RHLR VQFN RHL 20 3000 367.0 367.0 35.0 BQ24103ARHLR VQFN RHL 20 3000 367.0 367.0 35.0 BQ24103ARHLT VQFN RHL 20 250 210.0 185.0 35.0 BQ24103RHLR VQFN RHL 20 3000 367.0 367.0 35.0 BQ24104RHLR VQFN RHL 20 3000 367.0 367.0 35.0 BQ24104RHLT VQFN RHL 20 250 210.0 185.0 35.
PAGE 36
PAGE 37
PAGE 38
PAGE 39
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.