BQ24725A_17 Datasheet, PDF (29/47 Pages) Texas Instruments – 1-4 Cell Li+ Battery SMBus Charge Controller with N-Channel Power MOSFET Selector and Advanced Circuit Protection

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bq24725A
SLUSAL0A – SEPTEMBER 2011 – REVISED AUGUST 2014
Typical Application (continued)
Table 7. Component List for Typical System Circuit of Figure 18
PART DESIGNATOR
C1, C2, C3, C13, C14, C16
C4
C5, C6
C7
C8, C9, C10, C11
C15
C17
Ci
Csys
D1
D2
Q1, Q2, Q5
Q3, Q4
Q6
L1
R1
R2
R3, R4, R5
R6, R10, R11
R7
R8
R9
R12
R13
R14
R15
RAC, RSR
Ri
U1
U2
QTY
6
1
2
1
4
1
1
1
1
1
1
3
2
1
1
1
1
3
3
1
1
1
1
1
1
1
2
1
1
1
DESCRIPTION
Capacitor, Ceramic, 0.1µF, 25V, 10%, X7R, 0603
Capacitor, Ceramic, 100pF, 25V, 10%, X7R, 0603
Capacitor, Ceramic, 1µF, 25V, 10%, X7R, 0603
Capacitor, Ceramic, 0.047µF, 25V, 10%, X7R, 0603
Capacitor, Ceramic, 10µF, 25V, 10%, X7R, 1206
Capacitor, Ceramic, 0.01µF, 25V, 10%, X7R, 0603
Capacitor, Ceramic, 2200pF, 25V, 10%, X7R, 0603
Capacitor, Ceramic, 2.2µF, 25V, 10%, X7R, 1210
Capacitor, Electrolytic, 220µF, 25V
Diode, Schottky, 30V, 200mA, SOT-23, Fairchild, BAT54
Diode, Dual Schottky, 30V, 200mA, SOT-23, Fairchild, BAT54C
N-channel MOSFET, 30V, 12.5A, SO-8, Fairchild, FDS6680A
N-channel MOSFET, 30V, 12A, PowerPAK 1212-8, Vishay Siliconix, SiS412DN
N-channel MOSFET, 50V, 0.2A, SOT-323, Diodes, BSS138W
Inductor, SMT, 4.7µH, 5.5A, Vishay Dale, IHLP2525CZER4R7M01
Resistor, Chip, 430kΩ, 1/10W, 1%, 0603
Resistor, Chip, 66.5kΩ, 1/10W, 1%, 0603
Resistor, Chip, 10kΩ, 1/10W, 1%, 0603
Resistor, Chip, 4.02kΩ, 1/10W, 1%, 0603
Resistor, Chip, 316kΩ, 1/10W, 1%, 0603
Resistor, Chip, 100kΩ, 1/10W, 1%, 0603
Resistor, Chip, 10Ω, 1/4W, 1%, 1206
Resistor, Chip, 1.00MΩ, 1/10W, 1%, 0603
Resistor, Chip, 3.01MΩ, 1/10W, 1%, 0603
Resistor, Chip, 10Ω, 1/10W, 5%, 0603
Resistor, Chip, 7.5Ω, 1/10W, 5%, 0603
Resistor, Chip, 0.01Ω, 1/2W, 1%, 1206
Resistor, Chip, 2Ω, 1/2W, 1%, 1210
Charger controller, 20 pin VQFN, TI, bq24725ARGR
Dual digital transistor, 40V, 30mA, SC-74, Rohm, IMD2A
9.2.1 Design Requirements
DESIGN PARAMETER
Input Voltage⁽¹⁾
Input Current Limit ⁽¹⁾
Battery Charge Voltage⁽²⁾
Battery Charge Current⁽²⁾
Battery Discharge Current⁽²⁾
EXAMPLE VALUE
17.7V < Adapter Voltage < 24V
3.2A for 65W adapter
12592mV for 3s battery
4096mA for 3s battery
6144mA for 3s battery
(1) Refer to adapter specification for settings for Input Voltage and Input Current Limit.
(2) Refer to battery specification for settings.
Copyright © 2011–2014, Texas Instruments Incorporated
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