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參數(shù)資料
| 型號(hào)： | MAX1638EEG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 中文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, QSOP-24 |
| 文件頁數(shù)： | 7/16頁 |
| 文件大?。?/td> | 149K |
| 代理商： | MAX1638EEG |
M
High-S peed S tep-Down Controller with
S ync hronous Rec tific ation for CPU Power
_______________________________________________________________________________________
7
Figure 1. Standard Application Circuit
_____S tandard Applic ation Circ uits
The predesigned MAX1638 circuit shown in Figure 1
meets a wide range of applications with output currents
up to 19A and higher. Use Table 1 to select compo-
nents appropriate for the desired output current range,
and adapt the evaluation kit PC board layout as neces-
sary. This circuit represent a good set of trade-offs
between cost, size, and efficiency while staying within
the worst-case specification limits for stress-related
parameters, such as capacitor ripple current.
The MAX1638 circuit was designed for the specified
frequency. Do not change the switching frequency
without first recalculating component values—particu-
larly the inductance, output filter capacitance, and RC1
resistance values. Table 2 lists the voltage adjustment
DAC codes.
_______________Detailed Desc ription
The MAX1638 is a BiCMOS power-supply controller
designed for use in switch-mode, step-down (buck)
topology DC-DC converters. Synchronous rectification
provides high efficiency. It is intended to provide the
high precision, low noise, excellent transient response,
and high efficiency required in today’s most demand-
ing applications.
N1
N2
D1
(OPTIONAL)
R3
(OPTIONAL)
R4
(OPTIONAL)
V
CC
V
DD
PWROK
BST
DH
LX
DL
PGND
CSH
FB
PDRV
NDRV
AGND
CC1
CC2
CC1
1000pF
CC2
0.056
μ
F
REF
C4, 1.0
μ
F
CERAMIC
RC1
1k
TO
AGND
R6
100k
C5
0.1
μ
F
C6
10
μ
F
R5
10
TOV
DD
FREQ
LG
D0
D1
D2
D3
D4
C7
0.1
μ
F
D2
CMPSH-3
C3
0.1
μ
F
L1
R1
V
IN
= 5V
C1
C2
LOCAL
BYPASSING
MAX1638
P1
C8
1
μ
F
R2
V
OUT
= 1.3V
TO3.5V
N3
LOAD
CSL
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1638VRMEVKIT | 功能描述:DC/DC 開關(guān)控制器 High-Speed Step-Down Controller with Synchronous Rectification 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(fēng)格: 封裝 / 箱體:CPAK |
| MAX1639ESE | 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 |
| MAX1639ESE+ | 功能描述:DC/DC 開關(guān)控制器 High Speed Step Down 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 |
| MAX1639ESE+T | 功能描述:DC/DC 開關(guān)控制器 High Speed Step Down 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 |
| MAX1639ESE-T | 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 |
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