參數(shù)資料
型號： MAX797
廠商： Maxim Integrated Products, Inc.
英文描述： Step-Down Controllers with Synchronous Rectifier for CPU Power(3.3V/5V/可調(diào),帶有同步整流器的PWM步降控制器，用于筆記本電腦)
中文描述： 同步整流降壓型控制器，用于CPU電源
文件頁數(shù)： 11/32頁
文件大小： 395K
代理商： MAX797
M
S tep-Down Controllers with
S ync hronous Rec tifier for CPU Power
______________________________________________________________________________________
11
Table 1. Component Selection for Standard 3.3V Applications
COMPONENT
1A
2A
3A
4A
10A
Input Range
Application
Frequency
4.75V to 18V
PDA
150kHz
4.75V to 18V
Sub-Notebook
300kHz
Motorola 1/2
MMDF3N03HD or 1/2
Si9936
Motorola 1/2
MMDF3N03HD or 1/2
Si9936
4.75V to 28V
Notebook
300kHz
Motorola
MMSF5N03HD or
Si9410
Motorola
MMSF5N03HD or
Si9410
4.75V to 24V
High-End Notebook
300kHz
Motorola
MTD20N03HDL
DPAK
Motorola
MTD20N03HDL
DPAK
4.5V to 6V
Desktop 5V-to-3V
300kHz
Motorola
MTD75N03HDL
D
2
PAK
Motorola
MTD75N03HDL
D
2
PAK
2 x 220μF, 10V
Sanyo OS-CON
10SA220M
4 x 220μF, 10V
Sanyo OS-CON
10SA220M
1N5820 NIEC
NSQ03A02, or
Motorola MBRS340T3
3 x 0.02
IRC
LR2010-01-R020
(3 in parallel)
1.5μH, 11A, 3.5m
Coiltronics
CTX03-12357-1
Q1 High-Side
MOSFET
International Rectifier
1/2 IRF7101
Q2 Low-Side
MOSFET
International Rectifier
1/2 IRF7101
C1 Input
Capacitor
22μF, 35V AVX TPS
or Sprague 595D
2 x 22μF, 35V AVX
TPS or Sprague 595D
2 x 22μF, 35V AVX
TPS or Sprague 595D
4 x 22μF, 35V AVX
TPS or Sprague 595D
C2 Output
Capacitor
150μF, 10V AVX TPS
or Sprague 595D
150μF, 10V AVX TPS
or Sprague 595D
220μF, 10V AVX TPS
or Sprague 595D
3 x 220μF, 10V AVX
TPS or Sprague 595D
D1 Rectifier
1N5817 Motorola
MBR0502L SOD-89
1N5817 NIEC
EC10QS02L or
Motorola MBRS130T3
1N5819 NIEC
EC10QS03 or
Motorola MBRS130T3
1N5821 NIEC
NSQ03A04 or
Motorola MBRS340T3
R1 Resistor
0.062
IRC
LR2010-01-R062
0.039
IRC
LR2010-01-R039
0.025
IRC
LR2010-01-R025
0.015
IRC
LR2010-01-015
L1 Inductor
47μH, 1.2A Ferrite or
Kool-Mu
Sumida CD75-470
33μH, 2.2A Ferrite
Dale LPE6562-330MB
10μH, 3A Ferrite
Sumida CDRH125
4.7μH, 5.5A Ferrite
Coilcraft DO3316-472
Table 2. Component Suppliers
* Distributor
LOAD CURRENT
_______________Detailed Desc ription
The MAX796 is a BiCMOS, switch-mode power-supply
controller designed primarily for buck-topology regula-
tors in battery-powered applications where high effi-
ciency and low quiescent supply current are critical.
The MAX796 also works well in other topologies such
as boost, inverting, and CLK due to the flexibility of its
floating high-speed gate driver. Light-load efficiency is
enhanced by automatic idle-mode operation—a vari-
able-frequency pulse-skipping mode that reduces loss-
es due to MOSFET gate charge. The step-down
power-switching circuit consists of two N-channel
MOSFETs, a rectifier, and an LC output filter. The out-
put voltage is the average of the AC voltage at the
switching node, which is adjusted and regulated by
changing the duty cycle of the MOSFET switches. The
gate-drive signal to the N-channel high-side MOSFET
must exceed the battery voltage and is provided by a
flying capacitor boost circuit that uses a 100nF capaci-
tor connected to BST.
The MAX796 contains nine major circuit blocks, which
are shown in Figure 2.
{1} 847-390-4405
[1] 702-831-3521
(847) 390-4461
(702) 831-0140
TDK
Transpower Technologies
[81] 3-3607-5144
(847) 956-0666
Sumida
[1] 603-224-1430
(603) 224-1961
Sprague
[1] 408-970-3950
(408) 988-8000
(800) 554-5565
Siliconix
[81] 7-2070-1174
(619) 661-6835
Sanyo
[81] 3-3494-7414
(805) 867-2555*
NIEC
[1] 814-238-0490
(814) 237-1431
(800) 831-9172
Murata-Erie
[1] 602-994-6430
(602) 303-5454
Motorola
[1] 714-960-6492
(714) 969-2491
Matsuo
[1] 512-992-3377
(512) 992-7900
IRC
[1] 310-322-3332
(310) 322-3331
International Rectifier
[1] 605-665-1627
(605) 668-4131
Dale
[1] 561-241-9339
(561) 241-7876
Coiltronics
[1] 847-639-1469
(847) 639-6400
Coilcraft
[1] 516-435-1824
(516) 435-1110
Central Semiconductor
[1] 803-626-3123
(803) 946-0690
AVX
FACTORY FAX
[Country Code]
USA PHONE
MANUFACTURER
相關(guān)PDF資料
PDF描述
MAX797CPE Octal Bus Transceivers With 3-State Outputs 20-CDIP -55 to 125
MAX796-MAX799 Octal Buffers And Line Drivers With 3-State Outputs 20-CDIP -55 to 125
MAX796CPE Octal Buffers And Line Drivers With 3-State Outputs 20-CDIP -55 to 125
MAX796CSE Octal Buffers And Line Drivers With 3-State Outputs 20-CFP -55 to 125
MAX796EPE Octal Bus Transceivers With 3-State Outputs 20-LCCC -55 to 125
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX797C/D 功能描述:DC/DC 開關(guān)控制器 Step down 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 安裝風格: 封裝 / 箱體:CPAK
MAX797C/D DIE 制造商:Maxim Integrated Products 功能描述:
MAX797CPE 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 安裝風格: 封裝 / 箱體:CPAK
MAX797CSE 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 安裝風格: 封裝 / 箱體:CPAK
MAX797CSE+ 功能描述:DC/DC 開關(guān)控制器 Step-Down Controller for CPU Power 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 安裝風格: 封裝 / 箱體:CPAK
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