- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384654 > MAX1761 (Maxim Integrated Products, Inc.) Small, Dual, High-Efficiency Buck Controller for Notebooks PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX1761 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Small, Dual, High-Efficiency Buck Controller for Notebooks |
| 中文描述： | 小型、雙路、高效率buck控制器，用于筆記本電腦 |
| 文件頁(yè)數(shù)： | 19/23頁(yè) |
| 文件大?。?/td> | 473K |
| 代理商： | MAX1761 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)當(dāng)前第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)
M
Small, Dual, High-Efficiency
Buck Controller for Notebooks
______________________________________________________________________________________
19
where I
LIMIT(MAX)
is the maximum valley current
allowed by the current-limit circuit, including threshold
tolerance and on-resistance variation. This means that
the MOSFETs must be very well heatsinked. If short-cir-
cuit protection without overload protection is enough, a
normal I
LOAD
value can be used for calculating compo-
nent stresses.
Choose a Schottky diode (D1, Figure 2) having a for-
ward voltage low enough to prevent the Q2 MOSFET
body diode from turning on during the dead time. As a
general rule, a diode having a DC current rating equal
to 1/3 of the load current is sufficient. This diode is
optional and can be removed if efficiency isn
’
t critical.
Applications Issues
Dropout Performance
The output voltage adjust range for continuous-conduc-
tion operation is restricted by the nonadjustable 500ns
(max) minimum off-time one-shot. For best dropout per-
formance, use the side with the lower switching fre-
quency, FB2 (250kHz). When working with low input
voltages, the duty-factor limit must be calculated using
worst-case values for on- and off-times. Manufacturing
DH2
DH1
S
G
S
D
D
D
D
G
DL1
V+
D
G
D
S
D
S
D
S
P-CHANNEL
P-CHANNEL
LX1
LX2
N-CHANNEL
1
1
DL2
D
G
D
S
D
S
D
S
N-CHANNEL
1
Figure 9. Two Single N-Channel MOSFETs and a Dual P-Channel
MOSFET Design
DH1
S
S
S
D
D
D
D
G
LX1
DL1
V+
D
G
D
S
D
S
D
S
DH2
S
S
S
D
D
D
D
G
LX2
DL2
V+
D
G
D
S
D
S
D
S
P-CHANNEL
N-CHANNEL
P-CHANNEL
N-CHANNEL
1
1
1
1
Figure 10. Two Single N-Channel MOSFETs and Two Single P-Channel MOSFETs Design
P-CHANNEL
DH1
V+
LX1
S
D
G
D
S
D
G
D
P-CHANNEL
DH2
1
LX2
N-CHANNEL
DL1
DL2
D
G
D
S
D
G
D
S
N-CHANNEL
1
Figure 8. Dual N- and P-Channel MOSFET Design
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1761EEE | Replaced by TMS320VC5506 : Digital Signal Processor 100-LQFP |
| MAX1763 | 1.5A, Low-Noise, 1MHz, Step-Up DC-DC Converter |
| MAX1763EEE | 1.5A, Low-Noise, 1MHz, Step-Up DC-DC Converter |
| MAX1763EUE | Replaced by TMS320C6410 : Digital Signal Processors 68-PLCC -40 to 85 |
| MAX1765 | Replaced by TMS320C6410 : Digital Signal Processors 68-PLCC -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX17611GTL+ | 制造商:Maxim Integrated Products 功能描述:IMVP7 CPU AND GRAPHICS CONTROLLER - Rail/Tube |
| MAX17611GTL+T | 制造商:Maxim Integrated Products 功能描述:IMVP7 CPU AND GRAPHICS CONTROLLER - Tape and Reel |
| MAX1761EEE | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| MAX1761EEE+ | 功能描述:DC/DC 開關(guān)控制器 Dual Buck Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| MAX1761EEE+T | 功能描述:DC/DC 開關(guān)控制器 Dual Buck Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。