参数资料
| 型号： | MAX1945REUI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/19页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 6A 28TSSOP |
| 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： | 1.8V，2.5V，可调 |
| 输入电压： | 2.6 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 400kHz ~ 1.2MHz |
| 电流 - 输出： | 6A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
1MHz, 1% Accurate, 6A Internal Switch
Step-Down Regulators
ELECTRICAL CHARACTERISTICS (continued)
(V IN = V CC = V CTL1 = V CTL2 = V DD = 3.3V, SYNC = GND, FBSEL = High-Z, V FB = 0.7V, C REF = 0.22μF, T A = 0°C to +85°C , unless
otherwise noted. Typical values are at +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
FB
FBSEL = GND
1.782
1.800
1.818
FB Regulation Voltage
(Error Amp Only)
V FB
V COMP = 1V to 2V,
V IN = 2.6V to 5.5V
FBSEL = V CC
FBSEL = High-Z
2.475
0.792
2.500
0.800
2.525
0.808
V
Maximum Output Current
I FB_OUT
V IN = 3.3V, V OUT = 1.8V, L = 1μH
CTL1 = V CC ,
CTL2 = V CC
MAX1945R,
CTL1 = GND,
V COMP = 1V to 2V,
CTL2 = V CC
V IN = 2.6V to 5.5V
6
-1
3
+1
5
A
FB Voltage Margining Output
(Error Amp Only)
V MARGIN_
MAX1945S,
V COMP = 1V to 2V,
V IN = 2.6V to 5.5V
CTL1 = V CC ,
CTL2 = GND
CTL1 = V CC ,
CTL2 = V CC
CTL1 = GND,
CTL2 = V CC
-5
-1
8
-3
+1
10
%
CTL1 = V CC ,
CTL2 = GND
-10
-8
FB Input Resistance
FB Input Bias Current
FB to GND, FBSEL = GND, or V FB = 1.8V,
or FBSEL = V CC , or V FB = 2.5V
FBSEL = High-Z, V FB = 0.7V
25
50
0.01
100
0.10
k ?
μA
LX
LX On-Resistance High
R ON_HIGH_ V IN = V BST - V LX = 3.3V
LX V IN = V BST - V LX = 2.6V
26
30
43
50
m ?
LX On-Resistance Low
R ON_LOW_
LX
V IN = 3.3V
V IN = 2.6V
26
30
43
50
m ?
LX Current-Sense
Transresistance
From LX to COMP
43
54
65
m ?
LX Current-Limit Threshold
Duty cycle =100%,
V IN = 2.6V/3.3V/5.5V
High side
Low side
8.0
-6
10.4
-4
12.8
-2
A
LX Leakage Current
I LEAK_LX
V IN = 5.5V,
CTL1 = CTL2 = GND
V LX = 5.5V
LX = GND
-100
100
μA
LX Switching Frequency
LX Minimum Off-Time
f SW
t OFF
V IN = 2.6V/3.3V
V IN = 2.6V/3.3V
SYNC = V CC
SYNC = GND
0.8
400
1.0
500
155
1.2
600
180
MHz
kHz
ns
LX Maximum Duty Cycle
V IN = 2.6V/3.3V
SYNC = GND
SYNC = V CC
90
80
%
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3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1945SEUI | 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 |
| MAX1945SEUI+ | 功能描述:直流/直流开关调节器 1MHz 1% 6A Step-Down PWM 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 |
| MAX1945SEUI+T | 功能描述:直流/直流开关调节器 1MHz 1% 6A Step-Down PWM 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 |
| MAX1945SEUI-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 |
| MAX1946ETA | 制造商:Maxim Integrated Products 功能描述:SINGLE USB SWITCH WITH AUTORESET AND FAULT BL - Rail/Tube |
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