MAX8765ETI+ Maxim Integrated Products, MAX8765ETI+ Datasheet - Page 28

• Manufacturer Part Number: MAX8765ETI+
• Description: IC CHARGER BATTERY 28-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8765ETI+

• Function: Charge Management
• Battery Type: Multi-Chemistry
• Voltage - Supply: 8 V ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
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
current-sense lines and REF. Place ceramic
C9, C10
______________________________________________________________________________________
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
DESIGNATION QTY
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
M A X 1 9 0 8 / M A X 8 7 2 4 / M A X 8 7 6 5 / M A X 8 7 6 5 A .
Connect the power ground and normal ground to
this node.
R15, R16
R19, R20
RS1
RS2
R11
R12
R13
R14
R17
R18
D3
N1
U1
P1
R5
R6
R7
L1
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+, MAX8765AETI+
DESCRIPTION