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参数资料
| 型号： | MAX1973 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Smallest 1A, 1.4MHz Step-Down Regulators |
| 中文描述： | 尺寸最小的1A、1.4MHz降压型稳压器 |
| 文件页数： | 5/15页 |
| 文件大小： | 331K |
| 代理商： | MAX1973 |
M
Smallest 1A, 1.4MHz Step-Down Regulators
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS
(V
IN
= V
CTL_
= 3.3V, FB = OUT,
T
A
= -40
°
C to +85
°
C
, unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SS to GND Resistance
in Shutdown
5
40
100
FBSEL
Low Input Threshold
0.3
V
High Input Threshold
V
IN
-
0.4
V
Input Bias Current
COMP
FBSEL = GND or IN, V
IN
= 5.5V
-20
+20
μA
Transconductance
from FB to COMP
40
80
μS
COMP to GND Resistance
in Shutdown
5
100
Clamp Voltage Low
Clamp Voltage High
LX
On-Resistance High
On-Resistance Low
Current-Sense Transresistance
Positive Current-Limit Threshold
Negative Current-Limit Threshold
0.6
1.3
1.2
2.2
V
V
V
IN
= 3.3V
V
IN
= 3.3V
0.46
0.32
0.425
1.85
-0.35
20
V/A
A
A
0.275
1.10
-1.20
V
LX
= V
IN
= 5.5V
LX = GND, V
IN
= 5.5V
LX Shutdown Leakage Current
-20
1.2
μA
Switching Frequency
CTL1, CTL2 (MAX1973), ON (MAX1974)
Logic-Low Input Threshold
Logic-High Input Threshold
Logic Input Current
POK (MAX1974 only)
Output Low Voltage
1.6
MHz
0.6
V
V
μA
1.6
1
-1
POK sinking 1mA
100
95
92
mV
Rising
Falling
90
88
Output Valid Threshold
for POK
Percentage of nominal
regulation voltage
%
Note 2:
Specifications to -40
°
C are guaranteed by design and not production tested.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1973EUB | 功能描述:直流/直流开关调节器 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 |
| MAX1973EUB+ | 功能描述:直流/直流开关调节器 1A 1.4MHz Step-Down Regulator 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 |
| MAX1973EUB+T | 功能描述:直流/直流开关调节器 1A 1.4MHz Step-Down Regulator 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 |
| MAX1973EUB-T | 功能描述:直流/直流开关调节器 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 |
| MAX1973EVKIT | 功能描述:直流/直流开关调节器 Evaluation Kit for the MAX1973 MAX1974 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 |
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