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MAX1636EAP 参数 Datasheet PDF下载

MAX1636EAP图片预览
型号: MAX1636EAP
PDF下载: 下载PDF文件 查看货源
内容描述: 低电压,高精度降压型控制器,用于便携式CPU电源 [Low-Voltage, Precision Step-Down Controller for Portable CPU Power]
分类和应用: 控制器便携式
文件页数/大小: 24 页 / 220 K
品牌: MAXIM [ MAXIM INTEGRATED PRODUCTS ]
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Lo w -Vo lt a g e , P re c is io n S t e p -Do w n  
Co n t ro lle r fo r P o rt a b le CP U P o w e r  
_____________________________Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s (c o n t in u e d )  
(Circuit of Figure 1, V = 7V, T = +25°C, unless otherwise noted.)  
IN  
A
QUIESCENT SUPPLY CURRENT  
vs. INPUT VOLTAGE  
EFFICIENCY vs. LOAD CURRENT  
(1.8V/4A CIRCUIT)  
EFFICIENCY vs. LOAD CURRENT  
(1.8V/7A CIRCUIT)  
1000  
100  
100  
100  
10  
V = 7V  
IN  
90  
80  
70  
60  
90  
80  
70  
60  
1
V
= 7V  
IN  
V
IN  
= 15V  
V
IN  
= 22V  
V
IN  
= 15V  
1
0.10  
V
IN  
= 22V  
V
OUT  
= 3.3V  
0.01  
50  
50  
0
5
10  
15  
20  
25  
30  
1m  
10m  
100m  
LOAD CURRENT (A)  
1
10  
1m  
10m  
100m  
1
10  
INPUT VOLTAGE (V)  
LOAD CURRENT (A)  
VL LOAD-REGULATION ERROR  
vs. VL LOAD CURRENT  
LOAD REGULATION  
vs. LOAD CURRENT  
REF LOAD-REGULATION ERROR  
vs. REF LOAD CURRENT  
40  
35  
30  
25  
20  
15  
10  
5
5
4
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
PWM MODE  
= 5V  
V
OUT  
3
2
1
0
-1  
-2  
-3  
-4  
-5  
0
0
5
10 15 20 25 30 35 40 45 50  
VL LOAD CURRENT (mA)  
1m  
10m  
100m  
1
10  
0
10 20 30 40 50 60 70 80 90 100  
LOAD CURRENT (A)  
REF LOAD CURRENT (µA)  
DROPOUT VOLTAGE  
vs. LOAD CURRENT  
RESET TIME DELAY  
vs. OSC FREQUENCY  
LOAD-TRANSIENT RESPONSE  
(3.3V/3A, PWM MODE)  
250  
225  
200  
175  
150  
125  
100  
75  
400  
350  
300  
250  
200  
150  
100  
50  
V
OUT  
50mV/div  
4A  
2A  
0A  
LOAD  
CURRENT  
V
OUT  
FORCED TO 4.95V  
50  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5  
LOAD CURRENT (A)  
150 200 250 300 350 400 450 500  
(kHz)  
100µs/div)  
F
OSC  
6
_______________________________________________________________________________________  
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