參數(shù)資料
型號(hào)： MAX1865
廠商： Maxim Integrated Products, Inc.
元件分類： 數(shù)字信號(hào)處理
英文描述： Fixed-Point Digital Signal Processor 352-FCBGA
中文描述： 用于xDSL/電纜調(diào)制解調(diào)器的三/五路輸出電源
文件頁(yè)數(shù)： 23/25頁(yè)
文件大?。?/td> 384K
代理商： MAX1865
5) Ensure all feedback connections are short and
direct. Place the feedback resistors as close to the
MAX1864/MAX1865 as possible.
6) When trade-offs in trace lengths must be made, it
’
s
preferable to allow the inductor charging path to be
made longer than the discharge path. For example,
it is better to allow some extra distance between the
input capacitors and the high-side MOSFET than to
allow distance between the inductor and low-side
MOSFET or between the inductor and output filter
capacitor.
7) Route high-speed switching nodes away from sensi-
tive analog areas (B_, FB_, COMP, ILIM).
Regulating High Voltage
The linear regulator controllers can be configured to
regulate high output voltages by adding a cascode
transistor to buffer the base-drive output. For example,
to generate an output voltage between 30V and 60V,
add a 2N5550 high-voltage NPN transistor as shown in
Figure 8a where V
BIAS
is a DC voltage between 3V and
20V that can source at least 1mA. R
DROP
protects the
cascode transistor by decreasing the voltage across
the transistor when the pass transistor saturates.
Similarly, to regulate a negative output voltage between
-20V and -120V, add a 2N5401 high-voltage PNP tran-
sistor as shown in Figure 8b.
Chip Information
TRANSISTOR COUNT: 1617
PROCESS: BiCMOS
M
xDSL/Cable Modem Triple/Quintuple Output
Power Supplies
______________________________________________________________________________________
23
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
IN
VL
BST
DH
FB
OUT
COMP
POK
LX
DL
GND
ILIM
FB3
B3
FB2
B2
12
11
9
10
FB5
B5
FB4
B4
MAX1865
20 QSOP
TOP VIEW
Pin Configurations (continued)
相關(guān)PDF資料
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MAX1864TEEE xDSL/Cable Modem Triple/Quintuple Output Power Supplies
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1865TEEP 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel
MAX1865TEEP+ 功能描述:DC/DC 開(kāi)關(guān)控制器 xDSL/Cable Modem Triple/Quint Output RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
MAX1865TEEP+T 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 xDSL/Cable Modem Triple/Quint Output RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel
MAX1865TEEP-T 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel
MAX1865UEEP 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel
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