參數資料
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,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: 29/32頁
文件大?。?/td> 395K
代理商: MAX797
M
S tep-Down Controllers with
S ync hronous Rec tifier for CPU Power
______________________________________________________________________________________
29
MAX797
CSL
CSH
VL
SYNC
REF
GND
TO
VL
V+
Q1
Q2
FB
1000pF
R1
63.4k
0.1%
R2
200k
0.1%
10k
3.3OUTPUT
RSENSE
POINT
BST
DH
LX
DL
PGND
SKIP
SS
SHDN
INPUT
4.7
μ
F
0.33
μ
F
0.01
μ
F
R
SENSE
V
OUT
USE EXTERNAL REFERENCE
(MAX872) FOR BETTER ACCURACY.
ADJUST RANGE = 2.5V TO4V AS SHOWN.
OMIT R2 FOR V
OUT
= 2.5V.
= V
REF
(
1 + R1
)
R2
L1
MAX495
51k
5%
200k
5%
51k
5%
Figure 18. High-Accuracy Adjustable-Output Application
MAX797
CSL
CSH
VL
1N5819
SYNC
REF
GND
V+
Si9410
Si9410
FB
-5V AT 1.5A
BST
DH
LX
DL
PGND
SKIP
INPUT
4.5V TO25V
SHDN
0.33
μ
F
0.1
μ
F
4.7
μ
F
22
μ
F
22
μ
F
1N4148
L1
0.025
150
μ
F
150
μ
F
L1 = DALE LPE6562-A093
Figure 19. Negative-Output (Inverting Topology) Power Supply
____________________________________________Applic ation Circ uits (c ontinued)
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相關代理商/技術參數
參數描述
MAX797C/D 功能描述:DC/DC 開關控制器 Step down controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量: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 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量: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 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量: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 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK