参数资料
型号: MAX1742EEE+T
厂商: Maxim Integrated Products
文件页数: 5/16页
文件大小: 0K
描述: IC REG BUCK SYNC 1A 16QSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: 降压(降压)
输出类型: 两者兼有
输出数: 1
输出电压: 1.5V,1.8V,2.5V,可调
输入电压: 3 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 1MHz
电流 - 输出: 1A
同步整流器:
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)
包装: 带卷 (TR)
供应商设备封装: 16-QSOP
1A/2.7A, 1MHz, Step-Down Regulators with
Synchronous Rectification and Internal Switches
Typical Operating Characteristics
(Circuit of Figure 1, T A = +25°C, unless otherwise noted.)
MAX1742
EFFICIENCY vs. OUTPUT CURRENT
(V IN = 5.0V, L = 6.0 μ H)
MAX1742
EFFICIENCY vs. OUTPUT CURRENT
(V IN = 3.3V, L = 3.9 μ H)
MAX1742
EFFICIENCY vs.OUTPUT CURRENT
(f PWM = 270kHz)
100
95
90
85
V OUT = 2.5V, R TOFF = 47k Ω , f = 926kHz
V OUT = 1.8V, R TOFF = 75k Ω ,
f = 833kHz
100
95
90
85
V OUT = 2.5V, R TOFF = 36k Ω , f = 456kHz
100
95
90
85
V IN = 5V, V OUT = 1.8V,
L = 15 μ H, R TOFF = 240k Ω
80
75
80
75
80
75
70
65
70
65
V OUT = 1.8V, R TOFF = 43k Ω , f = 869kHz
70
65
60
55
V OUT = 1.5V, R TOFF = 100k Ω , f = 692kHz
60
55
V OUT = 1.5V, R TOFF = 56k Ω , f = 833kHz
60
55
V IN = 3.3V, V OUT = 1.8V,
L = 10 μ H, R TOFF = 160k Ω
50
50
50
0.001
0.01
0.1
1
0.001
0.01
0.1
1
0.001
0.01
0.1
1
0.5
0.4
0.3
OUTPUT CURRENT (A)
MAX1742
NORMALIZED OUTPUT ERROR
vs. OUTPUT CURRENT
OUTPUT CURRENT (A)
1100
1000
900
OUTPUT CURRENT (A)
MAX1742
SWITCHING FREQUENCY
vs. OUTPUT CURRENT
V IN = 5V, V OUT = 2.5V, L = 6 μ H
0.2
0.1
0
V IN = 5V, V OUT = 1.5V, L = 6μH
800
700
600
-0.1
-0.2
-0.3
-0.4
V IN = 3.3V, V OUT = 1.5V
500
400
300
200
100
V IN = 5V, V OUT = 1.5V, L = 6 μ H
V IN = 3.3V, V OUT = 1.5V, L = 3.9 μ H
-0.5
0.001
0.01
0.1
1
0
0
0.2
0.4
0.6
0.8
1.0
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
_______________________________________________________________________________________
5
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