BQ24180 Datasheet, PDF (3/39 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and Accessory Power Connection

bq24180
www.ti.com
SLUSA02 A – FEBRUARY 2010 – REVISED FEBRUARY 2010
DISSIPATION RATINGS
PACKAGE
WCSP-25
R_qJA
60°C/W ⁽¹⁾
(1) Using JEDEC 2s2p PCB standard.
R_qJC
1.57°C/W
T_A < 25°C
POWER RATING
540 mW
DERATING FACTOR
ABOVE T_A = 25°C
5.4 mW/°C
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
Supply voltage, VBUS
MIN NOM
4.0
MAX UNIT
16 ⁽¹⁾
V
Operating junction temperature range, T_J
0
125 °C
(1) The inherent switching noise voltage spikes should not exceed the absolute maximum rating on either the BOOT or SW pins. A tight
layout minimizes switching noise.
ELECTRICAL CHARACTERISTICS
Circuit of Figure 2, V_VBUS = 5V, HZ_MODE=0, CD=0, T_J = –40°C to 125°C and T_J = 25°C for typical values (unless otherwise
noted)
INPUT CURRENTS
PARAMETER
I_VBUS
V_VBUS supply current for control
I_{VBUS_LEAK}
I_{BAT_DCOUT}
Leakage current from battery to VBUS pin
Battery Current when using DCOUT
I_{BAT_HIZ}
Battery discharge current in High Impedance
mode, (CSIN, CSOUT, SW pins)
VOLTAGE REGULATION
V_OREG
Output charge voltage programmable range
Voltage regulation accuracy
TEST CONDITIONS
V_VBUS > V_VBUS(min), PWM switching
V_VBUS > V_VBUS(min), PWM NOT switching
0°C< T_J < 85°C, EN=0 or HZ_MODE=1
0°C< T_J < 85°C, V_CSOUT = 4.2 V, No input connected
DCOUT = enabled, V_BAT = 4.2V, DCOUT_ILIM=1A,
I_DCOUT=750mA
0°C< T_J < 85°C, V_CSOUT = 4.2 V, No Input connected,
DCOUT disabled SCL,SDA=0V or 1.8V
0°C< TJ < 85°C, VCSOUT = 4.2 V, High Impedance
mode, DCOUT disabled, V_VBUS = 5V,
SCL,SDA=0V or 1.8V
Operating in voltage regulation, programmable
T_A = 25°C
CURRENT REGULATION - FAST CHARGE
I_OCHARGE
Output charge current programmable range
Regulation accuracy for charge current
across RSNS
V_IREG = I_OCHARGE × R_SNS
PSEL, CD LOGIC LEVEL
V_IL
Input low threshold level
V_IH
Input high threshold level
CHARGE TERMINATION DETECTION
I_TERM
Termination charge current
I_{TERM_dgl}
Deglitch time for charge termination
Regulation accuracy for termination current
across R_SNS
V_{IREG_TERM} = I_OTERM × R_SNS
Battery Detection sink current before charge
done
INPUT BASED DYNAMIC POWER MANAGEMENT
V_PRECHG ≤ V_CSOUT < V_OREG, V_VBUS>V_SLP,
R_SNS = 68 mΩ, Programmable
V_ICHRG = 37.4 mV to 44.2 mV
V_ICHRG > 44.2 mV
PSEL, CD falling
PSEL, CD rising
V_CSOUT > V_OREG–V_RCH , V_VBUS>V_SLP,
R_SNS = 68 MΩ, Programmable
Both rising and falling, 2-mV over- drive,
t_RISE, t_FALL = 100 ns
V_TERM = 1.7 mV
V_TERM = 3.4 mV to 6.8 mV
V_TERM = 6.8 mV to 13.6 mV
V_TERM ≥ 13.6 mV
MIN TYP MAX UNIT
10
mA
5 mA
650 µA
5 µA
800 µA
30 µA
60 µA
3.5
–0.5%
–1%
4.44 V
0.5%
1%
550
–3.5%
–3.0%
1.2
1550 mA
3.5%
3.0%
0.4 V
V
25
200 mA
–40%
–16%
–11%
–5.5%
30
–550
ms
40%
16%
11%
5.5%
µA
Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): bq24180
Submit Documentation Feedback
3