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BQ24618_15 Datasheet, PDF (31/43 Pages) Texas Instruments – System Power Selector and Low
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bq24618
SLUSA55B – OCTOBER 2010 – REVISED APRIL 2015
Table 4. Typical Inductor, Capacitor, and Sense Resistor Values as a Function of Charge Current for
bq24618 (600-kHz Switching Frequency)
CHARGE CURRENT
Output inductor LO
Output capacitor CO
Sense resistor
2A
6.8 μH
20 μF
10 mΩ
4A
6.8 μH
20 μF
10 mΩ
6A
4.7 μH
30 μF
10 mΩ
8A
3.3 μH
40 μF
10 mΩ
10 A
3.3 μH
40 μF
10 mΩ
9.2.2.7 Component List for Typical System Circuit of Figure 19
PART DESIGNATOR
Q1, Q2, Q3
Q4, Q5
D1
D2, D3, D4
RAC, RSR
L1
C8, C9, C12, C13
C4, C5
C1, C3, C6, C11
C2, C10
C7
C14, C15 (Optional)
C16
Cff
CTTC
R1, R3, R5, R7
R2
R4
R6
R8
R9
R10
R11, R12, R13, R18, R19
R14, R15 (optional)
R16
R17
R20
QTY
2
2
1
3
2
1
4
2
4
2
1
2
1
1
1
4
1
1
1
1
1
1
5
2
1
1
1
DESCRIPTION
P-channel MOSFET, –30 V, –35 A, PowerPAK 1212-8, Vishay-Siliconix, Si7617DN
N-channel MOSFET, 30 V, 12 A, PowerPAK 1212-8, Vishay-Siliconix, Sis412DN
Diode, dual Schottky, 30 V, 200 mA, SOT23, Fairchild, BAT54C
LED diode, green, 2.1 V, 20 mA, LTST-C190GKT
Sense resistor, 10 mΩ, 2010, Vishay-Dale, WSL2010R0100F
Inductor, 6.8 µH, 5.5 A, Vishay-Dale IHLP2525CZ
Capacitor, ceramic, 10 µF, 35 V, 20%, X7R
Capacitor, ceramic, 1 µF, 16 V, 10%, X7R
Capacitor, ceramic, 0.1 µF, 16 V, 10%, X7R
Capacitor, ceramic, 0.1 µF, 50 V, 10%, X7R
Capacitor, ceramic, 1 µF, 50 V, 10%, X7R
Capacitor, ceramic, 0.1 µF, 50 V, 10%, X7R
Capacitor, ceramic, 2.2 µF, 35 V, 10%, X7R
Capacitor, ceramic, 22 pF, 25 V, 10%, X7R
Capacitor, ceramic, 0.056 µF, 16 V, 5%, X7R
Resistor, chip, 100 kΩ, 1/16 W, 0.5%
Resistor, chip, 500 kΩ, 1/16 W, 0.5%
Resistor, chip, 32.4 kΩ, 1/16 W, 0.5%
Resistor, chip, 10 kΩ, 1/16 W, 0.5%
Resistor, chip, 22.1 kΩ, 1/16 W, 0.5%
Resistor, chip, 9.31 kΩ, 1/16 W, 1%
Resistor, chip, 430 kΩ, 1/16 W, 1%
Resistor, chip, 10 kΩ, 1/16 W, 5%
Resistor, chip, 100 kΩ, 1/16 W, 5%
Resistor, chip, 100 Ω, 1/16 W, 5%
Resistor, chip, 10 Ω, 1/4 W, 5%
Resistor, chip, 2 Ω, 1 W, 5%
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