参数资料
型号: MAX8554EEE+T
厂商: Maxim Integrated Products
文件页数: 8/24页
文件大小: 0K
描述: IC CNTRLR BUCK PWM 16-QSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: Quick-PWM™
应用: 控制器,DDR,DDR2
输入电压: 4.5 V ~ 28 V
输出数: 1
输出电压: 0.6 V ~ 3.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-QSOP
包装: 带卷 (TR)
4.5V to 28V Input, Synchronous PWM Buck Controllers
for DDR Termination and Point-of-Load Applications
Typical Operating Characteristics
(V V+ = 12V, V OUT = 1.8V, circuit of Figure 1, T A = +25 ° C, unless otherwise noted.)
100
90
EFFICIENCY vs. LOAD CURRENT
(CIRCUIT OF FIGURE 2)
100
90
EFFICIENCY vs. LOAD CURRENT
(CIRCUIT OF FIGURE 1)
V OUT = 2.5V
650
600
SWITCHING FREQUENCY vs.
OUTPUT CURRENT (CIRCUIT OF FIGURE 2)
80
70
60
50
V IN = 1.8V
V OUT = 0.9V
V IN = 2.5V
V OUT = 1.25V
80
70
60
50
V OUT = 1.8V
550
500
450
40
40
30
30
400
0.1
1.0
10.0
0.1
1.0
10.0
100.0
-8
-6
-4
-2
0
2
4
6
8
LOAD CURRENT (A)
SWITCHING FREQUENCY
vs. INPUT VOLTAGE (CIRCUIT OF FIGURE 3)
320
300
280
260
240
220
220
210
200
190
180
170
LOAD CURRENT (A)
FREQUENCY vs. TEMPERATURE
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
OUTPUT CURRENT (A)
MAX8554 SHUTDOWN SUPPLY CURRENT
vs. INPUT VOLTAGE
200
160
0.5
0
V+ = HSD, EN = GND
6
8
10 12 14 16 18 20 22 24 26 28
-40
-15
10
35
60
85
4
8
12
16
20
24
28
5.0
4.5
4.0
INPUT VOLTAGE (V)
MAX8553 SHUTDOWN SUPPLY CURRENT
vs. INPUT VOLTAGE
1.86
1.84
TEMPERATURE ( ° C)
LOAD REGULATION
(CIRCUIT OF FIGURE 1)
1.31
1.29
INPUT VOLTAGE (V)
LOAD REGULATION
(CIRCUIT OF FIGURE 2)
3.5
3.0
2.5
1.82
1.80
1.27
1.25
VTT CONNECTED
TO THE OUTPUT
2.0
1.5
1.78
1.23
1.0
0.5
0
EN = GND
1.76
1.74
1.21
1.19
VTT CONNECTED AS
SHOWN IN FIGURE 2
4
8
12
16
20
24
28
0
4.0
8.0
12.0
16.0
20.0
0
2
4
6
8
INPUT VOLTAGE (V)
LOAD CURRENT (A)
LOAD CURRENT (A)
8
_______________________________________________________________________________________
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