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参数资料
| 型号： | MAX1842 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1A/2.7A, 1MHz, Step-Down Regulators with Synchronous Rectification and Internal Switches |
| 中文描述： | 1A/2.7A、1MHz、降压型稳压器，内置同步整流与开关 |
| 文件页数： | 5/16页 |
| 文件大小： | 597K |
| 代理商： | MAX1842 |
Typical Operating Characteristics
(Circuit of Figure 1, T
A
= +25
°
C, unless otherwise noted.)
M
1A/2.7A, 1MHz, Step-Down Regulators with
Synchronous Rectification and Internal Switches
_______________________________________________________________________________________
5
100
95
90
85
80
70
65
60
55
50
75
0.001
0.01
OUTPUT CURRENT (A)
1
MAX1742
EFFICIENCY vs. OUTPUT CURRENT
(V
IN
= 5.0V, L = 6.0
μ
H)
M
E
0.1
V
= 1.8V, R
TOFF
= 75k
,
f = 833kHz
V
OUT
= 1.5V, R
TOFF
= 100k
, f = 692kHz
V
OUT
= 2.5V, R
TOFF
= 47k
, f = 926kHz
100
95
90
85
80
70
65
60
55
50
75
0.001
0.01
OUTPUT CURRENT (A)
1
MAX1742
EFFICIENCY vs. OUTPUT CURRENT
(V
IN
= 3.3V, L = 3.9
μ
H)
M
E
0.1
V
OUT
= 2.5V, R
TOFF
= 36k
, f = 456kHz
V
OUT
= 1.8V, R
TOFF
= 43k
, f = 869kHz
V
OUT
= 1.5V, R
TOFF
= 56k
, f = 833kHz
100
95
90
85
80
70
65
60
55
50
75
0.001
0.01
OUTPUT CURRENT (A)
1
MAX1742
EFFICIENCY vs.OUTPUT CURRENT
(f
PWM
= 270kHz)
M
E
0.1
V
IN
= 5V, V
OUT
= 1.8V,
L = 15
μ
H, R
TOFF
= 240k
V
IN
= 3.3V, V
OUT
= 1.8V,
L = 10
μ
H, R
TOFF
= 160k
0.5
0.4
0.3
0.2
0.1
-0.1
-0.2
-0.3
-0.4
-0.5
0
0.001
0.01
OUTPUT CURRENT (A)
1
MAX1742
NORMALIZED OUTPUT ERROR
vs. OUTPUT CURRENT
M
N
0.1
V
IN
= 5V, V
OUT
= 1.5V, L = 6
μ
H
V
IN
= 3.3V, V
OUT
= 1.5V
0
300
200
100
600
500
900
800
700
1100
1000
400
0
0.2
0.4
0.6
0.8
1.0
MAX1742
SWITCHING FREQUENCY
vs. OUTPUT CURRENT
M
OUTPUT CURRENT (A)
F
V
IN
= 5V, V
OUT
= 2.5V, L = 6
μ
H
V
IN
= 5V, V
OUT
= 1.5V, L = 6
μ
H
V
IN
= 3.3V, V
OUT
= 1.5V, L = 3.9
μ
H
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1742 | Replaced by TMS320C6410 : Digital Signal Processor 40-PDIP -40 to 85 |
| MAX1742-MAX1842 | Replaced by TMS320C6410 : Digital Signal Processor 40-PDIP 0 to 0 |
| MAX1742EEE | Replaced by TMS320C6410 : |
| MAX1843 | 2.7A, 1MHz, Low-Voltage, Step-Down Regulator with Internal Synchronous Rectification in QFN Package |
| MAX1843EGI | 2.7A, 1MHz, Low-Voltage, Step-Down Regulator with Internal Synchronous Rectification in QFN Package |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1842EEE | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1842EEE+ | 功能描述:直流/直流开关调节器 1/2.7A 1MHz Step-Down RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1842EEE+T | 功能描述:直流/直流开关调节器 1/2.7A 1MHz Step-Down RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1842EEE-T | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1842EEE-TG074 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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