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參數(shù)資料
| 型號(hào)： | MAX1645B |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting |
| 中文描述： | 高級(jí)、與化學(xué)類型無關(guān)的Level 2電池充電器，帶有輸入限流 |
| 文件頁數(shù)： | 31/32頁 |
| 文件大?。?/td> | 357K |
| 代理商： | MAX1645B |
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Advanced Chemistry-Independent, Level 2
Battery Charger with Input Current Limiting
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Minimize ground trace lengths in the high-current
paths.
Minimize other trace lengths in the high-current
paths:
Use >5mm-wide traces.
Connect C1 and C2 to high-side MOSFET
(10mm (max) length).
Connect rectifier diode cathode to low-side
MOSFET (5mm (max) length).
LX node (MOSFETs, rectifier cathode, inductor:
15mm (max) length). Ideally, surface-mount
power components are flush against one another
with their ground terminals almost touching.
These high-current grounds are then connected
to each other with a wide, filled zone of top-
layer copper so they do not go through vias.
The resulting top-layer subground plane is con-
nected to the normal inner-layer ground plane
at the output ground terminals, which ensures
that the IC
’
s analog ground is sensing at the
supply
’
s output terminals without interference
from IR drops and ground noise. Other high-
current paths should also be minimized, but
focusing primarily on short ground and current-
sense connections eliminates about 90% of all
PC board layout problems.
2) Place the IC and signal components. Keep the main
switching nodes (LX nodes) away from sensitive ana-
log 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 bypass
capacitors close to the IC. The bulk capacitors can
be placed further away. Place the current-sense
input filter capacitors under the part, connected
directly to the GND pin.
3) Use a single-point star ground placed directly below
the part. Connect the input ground trace, power
ground (subground plane), and normal ground to
this node.
Chip Information
TRANSISTOR COUNT: 6996
相關(guān)PDF資料 |
PDF描述 |
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| MAX1645BEEI | Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting |
| MAX1647 | Chemistry-Independent Battery Chargers |
| MAX1648 | Chemistry-Independent Battery Chargers |
| MAX1647-MAX1648 | Chemistry-Independent Battery Chargers |
| MAX1648ESE | Chemistry-Independent Battery Chargers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1645BEEI | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX1645BEEI+ | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX1645BEEI+T | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX1645BEEI-T | 功能描述:電池管理 Advanced Chemistry-Independent Level 2 Battery Charger with Input Current Limiting RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX1645BEVKIT | 制造商:Maxim Integrated Products 功能描述:EVALUATION KIT/EVALUATION SYSTEM FOR THE MAX1645B - Bulk |
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