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bq24080-Q1, bq24081-Q1
SLUSCB6B – MAY 2015 – REVISED JUNE 2017
bq2408x-Q1 1-A, Single Chip, Li-Ion and Li-Pol Automotive Charger
1 Features
3 Description
•
The bq24080-Q1 and bq24081-Q1 are highly
integrated and flexible Li-Ion linear charge devices
targeted at space-limited charger applications. They
offer an integrated power FET and current sensor,
high-accuracy current and voltage regulation, charge
status, and charge termination, in a single monolithic
device. An external resistor sets the magnitude of the
charge current.
1
•
•
•
•
•
•
•
Integrated Power FET and Current Sensor for
Up to 1-A Charge Applications From AC Adapter
Precharge Conditioning With Safety Timer
Charge and Power-Good Status Output
Automatic Sleep Mode for Low Power
Consumption
Integrated Charge-Current Monitor
Fixed 7-Hour Fast Charge Safety Timer
Ideal for Low-Dropout Charger Designs for
Single-Cell Li-Ion or Li-Pol Packs in
Space-Limited Portable Applications
Small 3-mm × 3-mm SON Package
The device charges the battery in three phases:
conditioning, constant current, and constant voltage.
Charge is terminated based on minimum current. An
internal charge timer provides a backup safety for
charge termination. The device automatically restarts
the charge if the battery voltage falls below an
internal threshold. The device automatically enters
sleep mode when the ac adapter is removed.
2 Applications
•
•
•
•
Linear Chargers for Automotive
E-Call/ Back Up Call battery
Automotive Infotainment
Key FOB in Automotive
Device Information(1)
PART NUMBER
bq24080-Q1(2)
bq24081-Q1
PACKAGE
VSON (10)
BODY SIZE (NOM)
3.00 mm x 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
(2) Product Preview
Simplified Schematic
AC
Adapter
VDC
GND
C1
0.1 mF
PACK+
bq24080-Q1
1
IN
C2
0.1 µF
OUT 10
PACK–
2
NC
CE
9
3
STAT1
PG
8
4
STAT2 VBSEL 7
5
VSS
Battery Pack
+
System
System
Interface
RSET
ISET
6
1.13 kW
Copyright © 2016, Texas Instruments Incorporated
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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.
bq24080-Q1, bq24081-Q1
SLUSCB6B – MAY 2015 – REVISED JUNE 2017
www.ti.com
Table of Contents
1
2
3
4
5
6
7
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
4
6.1
6.2
6.3
6.4
6.5
6.6
6.7
4
4
4
4
5
6
7
Absolute Maximum Ratings ......................................
ESD Ratings..............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Timing Requirements ................................................
Typical Characteristics ..............................................
Detailed Description .............................................. 8
7.1
7.2
7.3
7.4
Overview ................................................................... 8
Functional Block Diagram ....................................... 10
Feature Description................................................. 11
Device Functional Modes........................................ 14
8
Application and Implementation ........................ 15
8.1 Application Information............................................ 15
8.2 Typical Application ................................................. 15
9 Power Supply Recommendations...................... 17
10 Layout................................................................... 18
10.1 Layout Guidelines ................................................. 18
10.2 Layout Example .................................................... 18
10.3 Thermal Considerations ........................................ 19
11 Device and Documentation Support ................. 20
11.1
11.2
11.3
11.4
11.5
11.6
11.7
11.8
Device Support......................................................
Documentation Support ........................................
Related Links ........................................................
Receiving Notification of Documentation Updates
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
20
20
20
20
20
20
20
20
12 Mechanical, Packaging, and Orderable
Information ........................................................... 20
4 Revision History
Changes from Revision A (August 2016) to Revision B
•
Page
Changed the RθJC(top) value From: 5034 °C/W To: 50.4 °C/W in the Thermal Information table ........................................... 4
Changes from Original (May 2016) to Revision A
Page
•
Recommended Operating Conditions, Changed The TJ MIN value From: 0 To: –40°C........................................................ 4
•
Electrical Characteristics, Changed the conditions statement From: 0°C ≤ TJ ≤ 125°C To: –40°C ≤ TJ ≤ 125°C ................ 5
2
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Product Folder Links: bq24080-Q1 bq24081-Q1
bq24080-Q1, bq24081-Q1
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SLUSCB6B – MAY 2015 – REVISED JUNE 2017
5 Pin Configuration and Functions
bq24080-Q1 DRC Package
10 Pin VSON
Top View
VSS
5
STAT2 STAT1 GND
IN
3
1
VSS
4
6
bq24081-Q1 DRC Package
10 Pin VSON
Top View
7
ISET GND
2
8
9
10
PG
CE
OUT
STAT2 STAT1 GND
IN
5
4
3
2
1
6
7
8
9
10
TE
TS
OUT
ISET GND
Pin Functions
PIN
NAME
CE
NO.
bq24080-Q1
I/O
DESCRIPTION
bq24081-Q1
9
–
I
Charge enable input (active-low)
2, 7
2, 7
–
Ground
IN
1
1
I
Adapter dc voltage. Connect minimum 0.1-μF capacitor to VSS.
ISET
6
6
I
Charge current. External resistor to VSS sets precharge and fast-charge current, and also the
termination current value. Can be used to monitor the charge current.
OUT
10
10
O
Charge current output. Connect minimum 0.1-μF capacitor to VSS.
PG
8
–
O
Power-good status output (open-drain)
STAT1
3
3
O
STAT2
4
4
O
TE
–
8
I
TS
–
9
I/O
VSS
5
5
–
Ground
Thermal pad
–
–
–
There is an internal electrical connection between the exposed thermal pad and the VSS pin of the
device. The exposed thermal pad must be connected to the same potential as the VSS pin on the
printed-circuit board. Do not use the thermal pad as the primary ground input for the device. The
VSS pin must be connected to ground at all times.
GND
Charge status outputs (open-drain)
Timer-enable input (active-low)
Temperature sense; connect to NTC in battery pack.
Copyright © 2015–2017, Texas Instruments Incorporated
Product Folder Links: bq24080-Q1 bq24081-Q1
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bq24080-Q1, bq24081-Q1
SLUSCB6B – MAY 2015 – REVISED JUNE 2017
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6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
bq24080-Q1, bq24081-Q1
MIN
UNIT
MAX
Input voltage (2)
IN, CE, ISET, OUT, PG, STAT1, STAT2, TE, TS
7
V
Output sink/source current
STAT1, STAT2, PG
15
mA
Output current
OUT
1.5
A
–0.3
Operating free-air temperature range, TA
Junction temperature range, TJ
Storage temperature, Tstg
(1)
(2)
–40
125
–65
150
°C
°C
°C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltages are with respect to VSS.
6.2 ESD Ratings
VALUE
V(ESD)
(1)
Human-body model (HBM), per AEC Q100-002
Electrostatic discharge
(1)
UNIT
±2000
Charged-device model (CDM), per AEC Q100-011
V
±500
AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
VCC
Supply voltage
4.5
6.5
UNIT
V
TJ
Operating junction temperature range
–40
125
°C
6.4 Thermal Information
bq24080-Q1,
bq24081-Q1
THERMAL METRIC (1)
UNIT
DRC (10 PINS)
RθJA
Junction-to-ambient thermal resistance
44.3
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
50.4
°C/W
RθJB
Junction-to-board thermal resistance
19.7
°C/W
ψJT
Junction-to-top characterization parameter
0.7
°C/W
ψJB
Junction-to-board characterization parameter
19.9
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
4.5
°C/W
(1)
4
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
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Product Folder Links: bq24080-Q1 bq24081-Q1
bq24080-Q1, bq24081-Q1
www.ti.com
SLUSCB6B – MAY 2015 – REVISED JUNE 2017
6.5 Electrical Characteristics
over –40°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
1.2
2
2
5
UNIT
INPUT CURRENT
ICC(VCC)
VCC current
VCC > VCC(min)
ICC(SLP)
Sleep current
Sum of currents into OUT pin,
VCC < V(SLP)
ICC(STBY)
Standby current
CE = High, 0°C ≤ TJ ≤ 85°C
IIB(OUT)
Input current on OUT pin
Charge DONE, VCC > VCC(MIN)
150
1
mA
μA
5
VOLTAGE REGULATION VO(REG) + V(DO−MAX) ≤ VCC, I(TERM) < IO(OUT) ≤ 1 A
VO(REG)
Output voltage
4.2
TA = 25°C
Voltage regulation accuracy
V(DO)
0.35%
−1%
1%
VO(OUT) = VO(REG), IO(OUT) = 1 A
VO(REG) + V(DO)) ≤ VCC
Dropout voltage (V(IN) − V(OUT))
V
−0.35%
350
500
mV
1000
mA
V
CURRENT REGULATION
IO(OUT)
Output current range (1)
VI(OUT) > V(LOWV),
VI(IN) − VI(OUT) > V(DO),
VCC ≥ 4.5 V
V(SET)
Output current set voltage
Voltage on ISET pin, VCC ≥ 4.5 V,
VI ≥ 4.5 V, VI(OUT) > V(LOWV),
VI − VI(OUT) > V(DO)
K(SET)
Output current set factor
20
2.463
2.5
2.538
50 mA ≤ IO(OUT) ≤ 1 A
307
322
337
10 mA ≤ IO(OUT) < 50 mA
296
320
346
1 mA ≤ IO(OUT) < 10 mA
246
320
416
2.8
3
3.2
V
100
mA
270
mV
100
mA
mV
PRECHARGE AND SHORT-CIRCUIT CURRENT REGULATION
V(LOWV)
Precharge to fast-charge transition
threshold
Voltage on OUT pin
IO(PRECHG)
Precharge range (2)
0 V < VI(OUT) < V(LOWV), t < t(PRECHG)
2
Precharge set voltage
Voltage on ISET pin,
VO(REG) = 4.2 V,
0 V < VI(OUT) > V(LOWV), t < t(PRECHG)
240
V(PRECHG)
255
TERMINATION DETECTION
I(TERM)
Charge termination detection
range (3)
VI(OUT) > V(RCH), t < t(TRMDET)
2
V(TERM)
Charge termination detection set
voltage
Voltage on ISET pin,
VO(REG) = 4.2 V,
VI(OUT) > V(RCH), t < t(TRMDET)
235
250
265
VO(REG)
– 0.115
VO(REG)
− 0.10
VO(REG)
− 0.085
V
0.25
V
BATTERY RECHARGE THRESHOLD
V(RCH)
Recharge threshold
STAT1, STAT2, and PG OUTPUTS
VOL
Low-level output saturation voltage
IO = 5 mA
CE and TE INPUTS
VIL
Low-level input voltage
0
VIH
High-level input voltage
1.4
IIL
Low-level input current
–1
IIH
High-level input current
0.4
1
V
μA
TIMERS
I(FAULT)
(1)
(2)
(3)
Timer fault recovery current
200
μA
See Equation 2.
See Equation 1.
See Equation 4.
Copyright © 2015–2017, Texas Instruments Incorporated
Product Folder Links: bq24080-Q1 bq24081-Q1
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SLUSCB6B – MAY 2015 – REVISED JUNE 2017
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Electrical Characteristics (continued)
over –40°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SLEEP COMPARATOR
V(SLP)
Sleep-mode entry threshold voltage
V(SLPEXIT)
Sleep-mode exit threshold voltage
2.3 V ≤ VI(OUT) ≤ VO(REG)
VCC ≤ VI(OUT)
+ 80 mV
VCC ≥ VI(OUT)
+ 190
V
THERMAL SHUTDOWN THRESHOLDS
T(SHTDWN)
Thermal trip threshold
165
TJ increasing
Thermal hysteresis
°C
15
UNDERVOLTAGE LOCKOUT
Undervoltage lockout
UVLO
Decreasing VCC
2.4
Hysteresis
2.5
2.6
27
V
mV
TEMPERATURE SENSE COMPARATOR (bq24081-Q1)
V(TS1)
High-voltage threshold
2.475
2.5
2.525
V(TS2)
Low-voltage threshold
0.485
0.5
0.515
I(TS)
TS pin current source
96
102
108
V
μA
6.6 Timing Requirements
MIN
NOM
MAX
UNIT
VCC(MIN) ≥ 4.5 V, tFALL = 100 ns,
10-mV overdrive,
VI(OUT) decreasing below threshold
250
375
500
ms
VCC(MIN) ≥ 4.5 V, tFALL = 100 ns
charging current decreasing below
10-mV overdrive
250
375
500
ms
VCC(MIN) ≥ 4.5 V, tFALL = 100 ns
decreasing below or increasing
above threshold, 10-mV overdrive
250
375
500
ms
PRECHARGE AND SHORT-CIRCUIT CURRENT REGULATION
Deglitch time for fast-charge to
precharge transition
TERMINATION DETECTION
tTRMDET
Deglitch time for termination
detection
BATTERY RECHARGE THRESHOLD
t(DEGL)
Deglitch time for recharge detect
TIMERS
t(PRECHG)
Precharge time
t(CHG)
Charge time
1,584
1,800
2,016
s
22,176
25,200
28,224
s
250
375
500
ms
250
375
500
ms
SLEEP COMPARATOR
V(IN) decreasing below threshold,
tFALL = 100 ns, 10-mV overdrive
Sleep-mode entry deglitch time
TEMPERATURE SENSE COMPARATOR (bq24081-Q1)
t(DEGL)
6
Deglitch time for temperature fault
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Product Folder Links: bq24080-Q1 bq24081-Q1
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SLUSCB6B – MAY 2015 – REVISED JUNE 2017
6.7 Typical Characteristics
450
IO(OUT) = 1000 mA
400
Dropout Voltage - mV
350
IO(OUT) = 750 mA
300
250
IO(OUT) = 500 mA
200
150
IO(OUT) = 250 mA
100
50
0
0
50
100
o
TJ - Junction Temperature - C
150
Figure 1. Dropout Voltage vs Junction Temperature
Figure 2. VIN Hot-Plug Power-Up Sequence
Figure 3. Charge Enable Power-Up Sequence
(CE = High-to-Low)
Figure 4. Battery Hot-Plug During Charging Phase
No battery – In termination deglitch prior to STAT1 going high. VOUT (VBAT) cycling between charge and done prior to screen capture
Stat1 goes high – In done state
2-V battery is inserted during the charge done state.
Charging is initiated – STAT1 goes low and charge current is applied.
Battery is removed – VOUT goes into regulation, IOUT goes to zero, and termination deglitch timer starts running (same as state 1).
Deglitch timer expires – charge done is declared.
Figure 5. Battery Hot-Plug and Removal Power Sequence
Copyright © 2015–2017, Texas Instruments Incorporated
Product Folder Links: bq24080-Q1 bq24081-Q1
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bq24080-Q1, bq24081-Q1
SLUSCB6B – MAY 2015 – REVISED JUNE 2017
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7 Detailed Description
7.1 Overview
The device supports a precision Li-Ion, Li-Pol charging system suitable for single cells. Figure 6 shows a typical
charge profile, and Figure 7 shows an operational flow chart.
Preconditioning
Phase
Current Regulation Phase
Voltage Regulation and Charge Termination Phase
Regulation
Voltage
Regulation
Current
Minimum
Charge
Voltage
PreConditioning
and Term
Detect
Charge
Voltage
Charge
Complete
Charge
Current
Safety Timer
M0066-01
Figure 6. Typical Charging Profile
8
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Product Folder Links: bq24080-Q1 bq24081-Q1
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SLUSCB6B – MAY 2015 – REVISED JUNE 2017
Overview (continued)
POR
SLEEP MODE
VCC > VI(OUT)
checked at all
times?
No
Indicate SLEEP
MODE
Yes
VI(OUT)