MAX8724 Maxim Integrated Products, MAX8724 Datasheet - Page 28

• Manufacturer Part Number: MAX8724
• Description: (MAX1908 - MAX87xx) Low-Cost Multichemistry Battery Chargers
• Manufacturer: Maxim Integrated Products

Low-Cost Multichemistry Battery Chargers
Table 3. Component List for Circuit of Figure 2
28
2) Place the IC and signal components. Keep the
DESIGNATION QTY
C12, C13, C16
D1 (optional)
C11, C14,
C15, C20
C9, C10
main switching node (LX node) away from sensitive
analog components (current-sense traces and REF
capacitor). Important: The IC must be no further
than 10mm from the current-sense resistors.
Keep the gate-drive traces (DHI, DLO, and BST)
shorter than 20mm, and route them away from the
______________________________________________________________________________________
C1
C4
C5
D2
2
1
1
2
4
3
1
1
10µF, 50V 2220-size ceramic
capacitors
TDK C5750X7R1H106M
22µF, 25V 2220-size ceramic
capacitor
TDK C5750X7R1E226M
1µF, 25V X7R ceramic capacitor
(1206)
Murata GRM31MR71E105K
Taiyo Yuden TMK316BJ105KL
TDK C3216X7R1E105K
0.01µF, 16V cer am i c cap aci tor s ( 0402)
Murata GRP155R71E103K
Taiyo Yuden EMK105BJ103KV
TDK C1005X7R1E103K
0.1µF, 25V X7R ceramic capacitors
(0603)
Murata GRM188R71E104K
TDK C1608X7R1E104K
1µF, 6.3V X5R ceramic capacitors
(0603)
Murata GRM188R60J105K
Taiyo Yuden JMK107BJ105KA
TDK C1608X5R1A105K
10A Schottky diode (D-PAK)
Diodes, Inc. MBRD1035CTL
ON Semiconductor MBRD1035CTL
Schottky diode
Central Semiconductor
CMPSH1–4
DESCRIPTION
3) Use a single-point star ground placed directly
TRANSISTOR COUNT: 3772
PROCESS: BiCMOS
DESIGNATION QTY
R15, R16
R19, R20
current-sense lines and REF. Place ceramic
bypass capacitors close to the IC. The bulk capac-
itors can be placed further away.
below the part at the backside exposed pad of the
MAX1908/MAX8724/MAX8765. Connect the power
ground and normal ground to this node.
RS1
RS2
R11
R12
R13
R14
R17
R18
D3
N1
R5
R6
R7
U1
L1
P1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
2
1
1
1
Schottky diode
Central Semiconductor CMPSH1-4
10µH, 4.4A inductor
Sumida CDRH104R-100NC
TOKO 919AS-100M
Dual, n-channel, 8-pin SO MOSFET
Fairchild FDS6990A or FDS6990S
Single, p-channel, 8-pin SO MOSFET
Fairchild FDS6675
1kΩ ±5% resistor (0603)
59kΩ ±1% resistor (0603)
19.6kΩ ±1% resistor (0603)
12kΩ ±5% resistor (0603)
15kΩ ±5% resistor (0603)
33Ω ±5% resistor (0603)
10.5kΩ ±1% resistor (0603)
8.25kΩ ±1% resistors (0603)
19.1kΩ ±1% resistor (0603)
22kΩ ±1% resistor (0603)
10kΩ ±1% resistors (0603)
0.01Ω ±1%, 0.5W 2010 sense resistor
Vishay Dale WSL2010 0.010 1.0%
IRC LRC-LR2010-01-R010-F
0.015Ω ±1%, 0.5W 2010 sense
resistor
Vishay Dale WSL2010 0.015 1.0%
IRC LRC-LR2010-01-R015-F
MAX1908ETI, MAX8724ETI, or
MAX8765ETI
Chip Information
DESCRIPTION