参数资料
型号: MAX797CSE+T
厂商: Maxim Integrated Products
文件页数: 11/32页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 16-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
PWM 型: 电流模式,混合
输出数: 1
频率 - 最大: 330kHz
占空比: 96%
电源电压: 4.5 V ~ 30 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: 0°C ~ 70°C
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
Step-Down Controllers with
Synchronous Rectifier for CPU Power
Table 1. Component Selection for Standard 3.3V Applications
COMPONENT
Input Range
Application
Frequency
Q1 High-Side
MOSFET
Q2 Low-Side
MOSFET
1A
4.75V to 18V
PDA
150kHz
International Rectifier
1/2 IRF7101
International Rectifier
1/2 IRF7101
2A
4.75V to 18V
Sub-Notebook
300kHz
Motorola 1/2
MMDF3N03HD or 1/2
Si9936
Motorola 1/2
MMDF3N03HD or 1/2
Si9936
LOAD CURRENT
3A
4.75V to 28V
Notebook
300kHz
Motorola
MMSF5N03HD or
Si9410
Motorola
MMSF5N03HD or
Si9410
4A
4.75V to 24V
High-End Notebook
300kHz
Motorola
MTD20N03HDL
DPAK
Motorola
MTD20N03HDL
DPAK
10A
4.5V to 6V
Desktop 5V-to-3V
300kHz
Motorola
MTD75N03HDL
D 2 PAK
Motorola
MTD75N03HDL
D 2 PAK
C1 Input
Capacitor
22μF, 35V AVX TPS
or Sprague 595D
2 x 22μF, 35V AVX
TPS or Sprague 595D
2 x 22μF, 35V AVX 4 x 22μF, 35V AVX
TPS or Sprague 595D TPS or Sprague 595D
2 x 220μF, 10V
Sanyo OS-CON
10SA220M
C2 Output
Capacitor
150μF, 10V AVX TPS 150μF, 10V AVX TPS
or Sprague 595D or Sprague 595D
220μF, 10V AVX TPS
or Sprague 595D
3 x 220μF, 10V AVX
TPS or Sprague 595D
4 x 220μF, 10V
Sanyo OS-CON
10SA220M
D1 Rectifier
1N5817 Motorola
MBR0502L SOD-89
1N5817 NIEC
EC10QS02L or
Motorola MBRS130T3
1N5819 NIEC 1N5821 NIEC 1N5820 NIEC
EC10QS03 or NSQ03A04 or NSQ03A02, or
Motorola MBRS130T3 Motorola MBRS340T3 Motorola MBRS340T3
R1 Resistor
L1 Inductor
0.062 ? IRC
LR2010-01-R062
47μH, 1.2A Ferrite or
Kool-Mu
Sumida CD75-470
0.039 ? IRC
LR2010-01-R039
33μH, 2.2A Ferrite
Dale LPE6562-330MB
0.025 ? IRC
LR2010-01-R025
10μH, 3A Ferrite
Sumida CDRH125
0.015 ? IRC
LR2010-01-015
4.7μH, 5.5A Ferrite
Coilcraft DO3316-472
3 x 0.02 ? IRC
LR2010-01-R020
(3 in parallel)
1.5μH, 11A, 3.5m ?
Coiltronics
CTX03-12357-1
Table 2. Component Suppliers
MANUFACTURER
AVX
Central Semiconductor
USA PHONE
(803) 946-0690
(516) 435-1110
FACTORY FAX
[Country Code]
[1] 803-626-3123
[1] 516-435-1824
MANUFACTURER
Murata-Erie
USA PHONE
(814) 237-1431
(800) 831-9172
FACTORY FAX
[Country Code]
[1] 814-238-0490
Coilcraft
(847) 639-6400
[1] 847-639-1469
NIEC
(805) 867-2555* [81] 3-3494-7414
Coiltronics
Dale
International Rectifier
IRC
Kemet
Matsuo
Motorola
(561) 241-7876
(605) 668-4131
(310) 322-3331
(512) 992-7900
(864) 963-6300
(714) 969-2491
(602) 303-5454
[1] 561-241-9339
[1] 605-665-1627
[1] 310-322-3332
[1] 512-992-3377
[1] 864-963-6521
[1] 714-960-6492
[1] 602-994-6430
Sanyo
Siliconix
Sprague
Sumida
TDK
Transpower Technologies
(619) 661-6835
(408) 988-8000
(800) 554-5565
(603) 224-1961
(847) 956-0666
(847) 390-4461
(702) 831-0140
[81] 7-2070-1174
[1] 408-970-3950
[1] 603-224-1430
[81] 3-3607-5144
{1} 847-390-4405
[1] 702-831-3521
* Distributor
losses 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.
______________________________________________________________________________________
11
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