Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - battery management Charge management Li-Ion, Li-Po VSON 10 (3x3) Surface-mount

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FEATURES DESCRIPTION

APPLICATIONS

STAT1

STAT2

ISET

TMR

BAT

bq24061

OUT

STAT1

OUT

STAT2

ISET

TMR

BAT

InputPower

4.7 Fm

1.5kW 1.5kW

4.7 Fm

49.9kW

Pack-

Pack+

ChargeEnableand

InputPowerStatus

Li-lonorLi-Pol

BatteryPack

bq24061

1.13k

SET

TMR

Typical ApplicationforChargingBetween350mA and1 A.

bq2406x

SLUS689A – JUNE 2006 – REVISED OCTOBER 2006

1A SINGLE-CHIP Li-Ion/Li-Pol CHARGE MANAGEMENT IC

WITH THERMAL REGULATION

• Ideal for Low-Dropout Designs for Single-Cell

The bq2406x series are highly integrated Li-Ion and

Li-Ion or Li-Pol Packs in Space Limited

Li-Pol linear chargers, targeted at space-limited

Applications

portable applications. The bq2406x series offers a

variety of safety features and functional options,

• Integrated Power FET and Current Sensor for

while still implementing a complete charging system

up to 1-A Charge Applications

in a small package. The battery is charged in three

• Reverse Leakage Protection Prevents Battery

phases: conditioning, constant or thermally regulated

Drainage

current, and constant voltage. Charge is terminated

based on minimum current. An internal

• ± 0.5% Voltage Regulation Accuracy

programmable charge timer provides a backup

• Thermal Regulation Maximizes Charge Rate

safety feature for charge termination and is

• Charge Termination by Minimum Current and

dynamically adjusted during the thermal regulation

Time

phase. The bq2406x automatically re-starts the

charge if the battery voltage falls below an internal

• Precharge Conditioning With Safety Timer

threshold; sleep mode is set when the external input

• Status Outputs for LED or System Interface

supply is removed. Multiple versions of this device

Indicate Charge, Fault, and Power Good

family enable easy design of the bq2406x in cradle

Outputs

chargers or in the end equipment, while using low

• Short-Circuit and Thermal Protection

cost or high-end AC adapters.

• Automatic Sleep Mode for Low Power

Pin Out

Consumption

(Top View)

• Small 3 × 3 mm MLP Package

• Selectable Battery Insertion and Battery

Absent Detection

• Input Overvoltage Protection

– 6.5 V and 10.5 V Options

• PDA, MP3 Players, Digital Cameras

• Internet Appliances and Handheld Devices

TYPICAL APPLICATION CIRCUIT

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.

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 (35 pages)

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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 1A SINGLE-CHIP Li-Ion/Li-Pol CHARGE MANAGEMENT IC WITH THERMAL REGULATION FEATURES • • • • • • • • • • • • • DESCRIPTION Ideal for Low-Dropout Designs for Single-Cell Li-Ion or Li-Pol Packs in Space Limited Applications Integrated Power FET and Current Sensor for up to 1-A Charge Applications Reverse Leakage Protection Prevents Battery Drainage ±0.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. AVAILABLE OPTIONS Charge Input Over Voltage Voltage Termination Enable Safety Timer Enable Power Good Status IC Enable Pack Temp Pack Voltage Detection (Absent) Devices (1) (2) (3) Marking 4.2 V 6.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 ELECTRICAL CHARACTERISTICS over recommended operating, TJ = 0 –125°C range, See the Application Circuits section, typical values at TJ = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 1.5 3.
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bq2406x www.ti.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 ELECTRICAL CHARACTERISTICS (Continued) over recommended operating, TJ = 0–125°C range, See the Application Circuits section, typical values at TJ = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CHARGE TERMINATION DETECTION, VO(REG) = 4.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 DEVICE INFORMATION PIN ASSIGNMENT VSS STAT 2 STAT 1 TMR IN VSS STAT 2 STAT 1 TMR IN VSS STAT 2 STAT 1 TMR IN 5 4 3 2 1 5 4 3 2 1 5 4 3 2 1 bq24060/64 DRC (TOP VIEW) bq24063 DRC (TOP VIEW) bq24061 DRC (TOP VIEW) 6 7 8 9 10 6 7 8 9 10 6 7 8 9 10 ISET PG TS BAT OUT ISET PG CE BAT OUT ISET CE TE BAT OUT TERMINAL FUNCTIONS, REQUIRED COMPONENTS TERMINAL NO.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 TYPICAL OPERATING CHARACTERISTICS Measured using the typical application circuit shown previously. THERMAL LOOP OPERATION WITH POWERPAD ATTACHED THERMAL LOOP AND DTC OPERATION 1.75 1.6 6 1.50 1.4 5 1.25 4 1 12 10 IBAT 0.75 3 VISET 2 Battery Current - A Safety Timer Battery Current - A Voltage - V VIN 1.2 8 1 0.8 0 1.50 2 t - Time - s 2.50 2 0.2 0 1 4 0.4 0.25 0.50 IBAT 0.6 0.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 TYPICAL OPERATING CHARACTERISTICS (continued) Measured using the typical application circuit shown previously. FAST-CHARGE CURRENT vs BATTERY VOLTAGE FAST-CHARGE CURRENT vs BATTERY VOLTAGE 52.5 1000 104.5 995 52 104 990 51.5 103.5 103 85°C 102.5 25°C 102 101.5 0°C 985 980 970 85°C 965 101 960 955 2.20 2.40 2.60 Battery Voltage - V 2.80 3.20 3.40 3.60 3.80 Battery Voltage - V 85°C 49 3 4 3.20 3.40 3.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 FUNCTIONAL DESCRIPTION The charge current is programmable using external components (RISET resistor). The charge process starts when an external input power is connected to the system, the charger is enabled by CE = LO and the battery voltage is below the recharge threshold, V(BAT) < V(RCH). When the charge cycle starts a safety timer is activated, if the safety timer function is enabled.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 IN VREF VTJ Thermal Loop BATTERY SWITCH I(BAT) OUT I(BAT) / K(SET) ISET V(BAT) VO(REG) System Voltage Regulation Loop BAT Figure 14. Thermal Regulation Circuit A modified charge cycle, with the thermal loop active, is shown in Figure 15.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 APPLICATION CIRCUITS The typical application diagrams shown here are configured for 750 mA fast charge current, 75 mA pre-charge current, 5 hour safety timer and 30 min pre-charge timer. Li-Ion or Li-Pol Battery Pack bq24060/64 Input Power 1 RTMR C3 4.7 mF R1 R2 1.5 kW 1.5 kW 2 OUT 10 IN TMR BAT 9 STAT 1 TS 8 STAT 2 PG 49.9 kW RED 3 Pack+ R8 + C2 200 W 2.2 mF C1 4 GREEN 5 0.47 mF 7 ISET 6 Vss Pack- RT1 10 kW RT2 33.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 Sleep Mode The bq2406x enters the sleep mode when the input power voltage (IN) is above the power down threshold V(PDWN) but still lower than the input power detection threshold, V(IN) < V(OUT) + VIN(DT). During the sleep mode the charger is off, and the host commands at the control pins are not interpreted.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 CONTROL LOGIC OVERVIEW An external host can enable or disable the charging process using a dedicated control pin, CE. A low-level signal on this pin enables the charge, and a high-level signal disables the charge. The bq2460x is in stand-by mode with CE = HI. When the charger function is enabled (CE = LO) a new charge is initiated.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 VIN Charge Suspend VC(TS2) 0.6* VIN Normal Temperature Charge Range VC(TS1) 0.3* VIN Charge Suspend Figure 18. Battery Temperature Qualification With NTC Thermistor The external resistors RT1 and RT2 (see application diagram) enable selecting a temperature window.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 Table 3.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 PRE-CHARGE TIMER The bq2406x family activates an internal safety timer during the battery pre-conditioning phase. The charge safety timer time-out value is set by the external resistor connected to TMR pin, RTMR and the timeout constants K(PCHG) and T(CHG) : T(PCHG) = K(PCHG)× T(CHG) The pre-charge timer operation is detailed in Table 4. Table 4.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 Thermal Regulation Normal Operation Thermal Shutdown 800 175 IBAT 700 Battery Current - mA 600 125 500 TJ Junction Temperature 400 100 300 75 200 TJ - Junction Temperature - °C 150 50 100 0 4 6 8 10 12 14 16 25 18 VI - Input Voltage - V Figure 19.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 CHARGE TIMER INTERNAL CLOCK PERIOD MULTIPLICATION FACTOR 5 4 3 2 1 0 0 1 5 4 3 2 V(SET)/V(ISET) - V Figure 20. Safety Timer Linearity Internal Clock Period Multiplication Factor 45 RTMR = 70 kW T(CHG) - Safety Timer - Hours 40 35 30 RTMR = 50 kW 25 20 RTMR = 30 kW 15 10 5 0 0 1 2 3 VSET/VISET - V 4 5 Figure 21.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 160 Core Oscillator Frequency - kHz 140 120 100 80 60 40 20 0 20 30 40 60 50 ITMR Current - mA 70 80 90 Figure 22. bq2406x Oscillator Linearity vs ITMR RTMR 30 KΩ – 100 KΩ CHARGE TERMINATION DETECTION AND RECHARGE The charging current is monitored the during the voltage regulation phase.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 5 VO - Output Voltage - V 4.50 4 3.50 3 2.50 2 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 t - Time - s Figure 23. Battery-Absent Detection Waveforms The battery absent detection function is disabled if the voltage at the BAT pin is held above the battery recharge threshold, V(RCH), after termination detection.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 Table 7. Charge Safety Timer Operational Modes bq2460X V(OUT) > V(LOWV) CHARGE SAFETY TIMER MODE STANDBY X RESET CHARGING No RESET SUSPEND No RESET SUSPEND Yes SUSPEND CHARGING, TMR PIN NOT OPEN Yes COUNTING X RESET CHARGING, TMR PIN OPEN In SUSPEND mode the charge safety timer is put on hold (i.e.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 See the application section for additional details on start-up operation with V(BAT) < V(SC). STARTUP WITH DEEPLY DEPLETED BATTERY CONNECTED The bq2406x charger furnishes the programmed charge current if a battery is detected. If no battery is connected the bq2406x operates as follows: • The output current is limited to 22 mA (typical), if the voltage at BAT pin is below the short circuit detection threshold V(SC), 1.8 V typical.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 APPLICATION INFORMATION SELECTING INPUT AND OUTPUT CAPACITOR In most applications, all that is needed is a high-frequency decoupling capacitor on the input power pin. A 1-µF ceramic capacitor, placed in close proximity to the IN pin and GND pad, works fine.
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 APPLICATION INFORMATION (continued) R T2 + R T1 + 2.5 R TCRTH RTC * 3.5 RTH 7 R THRT2 3 ƪRTH ) RT2ƫ + + 2.5 (27.28k) (4.912k) + 33.2k; 27.28k * 3.5(4.912k) 7 (4.921k) (33.2k) + 10k 3 [4.921k ) 33.2k] (6) PIN COMPONENTS IN In most applications, the minimum input capacitance needed is a 0.1 µF ceramic decoupling capacitor near the input pin connected to ground (preferably to a grond plane through vias).
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bq2406x www.ti.com SLUS689A – JUNE 2006 – REVISED OCTOBER 2006 APPLICATION INFORMATION (continued) • Whether other surfaces are in close proximity to the device being tested The device power dissipation, P, is a function of the charge rate and the voltage drop across the internal PowerFET.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 2-Nov-2013 Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
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PACKAGE MATERIALS INFORMATION www.ti.com 25-Dec-2013 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 BQ24060DRCR SON DRC 10 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 BQ24060DRCR SON DRC 10 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 BQ24060DRCT SON DRC 10 250 180.0 12.4 3.3 3.3 1.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 25-Dec-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ24060DRCR SON DRC 10 3000 338.0 355.0 50.0 BQ24060DRCR SON DRC 10 3000 367.0 367.0 35.0 BQ24060DRCT SON DRC 10 250 210.0 185.0 35.0 BQ24060DRCT SON DRC 10 250 338.0 355.0 50.0 BQ24061DRCR SON DRC 10 3000 367.0 367.0 35.0 BQ24061DRCT SON DRC 10 250 210.0 185.0 35.
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