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参数资料
| 型号： | MAX1857EUA47+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/10页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 4.75V/ADJ .5A 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 4.75V，1.25 V ~ 5 V |
| 输入电压： | 2.5 V ~ 5.5 V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA（最小） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 管件 |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
500mA, Low-Dropout,
Ripple-Rejecting LDO in μMAX
ELECTRICAL CHARACTERISTICS (continued)
(V IN = +5.25V, V OUT = 4.75V, SHDN = IN, SET = GND, T A = -40 ° C to +85 ° C , unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
RESET OUTPUT
Reset Output Low Voltage
V OL
RST sinking 1mA
0.1
V
Operating Voltage Range for
Valid Reset
RST Output High Leakage
Current
RST Threshold
RST sinking 100 μ A
V RST = +5.5V
Rising edge, referred to V OUT(NOMINAL)
1.0
83
5.5
100
89
V
nA
%
RST Release Delay
t RP
Rising edge of OUT to rising edge of RST
1.4
8
ms
Note 1: Dropout voltage is defined as V IN - V OUT , when V OUT is 100mV below the value of V OUT measured when V IN = V OUT(NOM)
+ 0.5V. Since the minimum input voltage is 2.5V, this specification is only meaningful when V OUT(NOM) ≥ 2.5V. For V OUT(NOM)
between 2.5V and 3.5V, use the following equations: Typical Dropout = -93mV/V ? V OUT(NOM) + 445mV; Guaranteed Maximum
Dropout = -137mV/V ? V OUT(NOM) + 704mV. For V OUT(NOM) ≥ 3.5V: Typical Dropout = 120mV; Guaranteed Maximum Dropout
= 175mV.
Note 2: Specifications to -40 ° C are guaranteed by design, not production tested.
Typical Operating Characteristics
(V IN = +5.25V, V OUT = 4.75V, SHDN = IN, SET = GND, C IN = 1μF, C OUT = 3.3μF, T A = +25 ° C, unless otherwise noted.)
OUTPUT VOLTAGE
DROPOUT VOLTAGE
vs. OUTPUT CURRENT
OUTPUT VOLTAGE vs. TEMPERATURE
vs. OUTPUT CURRENT
4.80
4.80
I OUT = 0mA
300
T A = +85 ° C
4.76
V IN = 5.25V
4.78
250
T A = +25 ° C
200
4.76
4.72
150
4.68
4.64
V IN = 5.00V
4.74
4.72
4.70
100
50
0
T A = -40 ° C
0
200
400
600
800
1000
-55
-25
5
35
65
95
125
0
200
400
600
800
1000
OUTPUT CURRENT (mA)
TEMPERATURE ( ° C)
OUTPUT CURRENT (mA)
4
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| MAX1857EUA47+ | 功能描述:低压差稳压器 - LDO 500mA Ripple-Rejecting RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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