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参数资料
| 型号： | MAX5091AASA+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 11/15页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V .1A 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 5V |
| 输入电压： | 最高 28V |
| 电压 - 压降（标准）： | 0.3V @ 100mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 100mA |
| 电流 - 限制（最小）： | 160mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm Width）裸露焊盘 |
| 供应商设备封装： | 8-SOICN 裸露焊盘 |
| 包装： | 带卷 (TR) |
28V, 100mA, Low-Quiescent-Current LDO
with Reset and Power-Fail Input/Output
Applications Information
Available Output Current Calculation
The MAX5091 high-voltage regulator provides up to
After determining the allowable package dissipation, cal-
culate the maximum output current using the following
formula:
100mA of output current. The input voltage extends to
+28V. Package power dissipation limits the amount of
output current available for a given input/output voltage
I OUT(MAX) ?
P D
V S ? V OUT
P D = ?
and ambient temperature. Figure 2 depicts the maxi-
mum power dissipation curve for the 8-pin SO-EP pack-
age. The graph assumes that the exposed metal back
of the MAX5091 package is soldered to copper on a
single layer PCB according to the JEDEC51 standard.
Use Figure 2 to determine the allowable package dissi-
pation for a given ambient temperature. Alternately, use
the following formula to calculate the allowable pack-
age dissipation:
? 1.538W For T A ≤ + 70 ° C
? 1.538 ? 0.01923 ( T A ? 70 ° C ) For + 70 ° C < T A ≤ + 125 ° C
The above equations do not include the power dissipation
from self-heating due to the IC ground current.
The junction-to-ambient thermal impedance depends
on the area of the copper plane, its thickness, and the
number of copper layers on PCB. For the higher power
dissipation requirement, use multiple-layered PCBs
with 2oz copper and a large copper area.
Capacitor Selection and
Regulator Stability
For stable operation over the full temperature range and
with load currents up to 100mA, use a 10μF output
capacitor with a low ESR. Table 1 shows a list of recom-
mended output capacitor ESR for various load conditions.
2.0
1.8
1.6
1.538W
8-PIN SO-EP
Table 1. Recommended Output Capacitor
ESR
1.4
1.2
1.0
DERATE
19.23mW/ ° C
I OUT
I OUT ≤ 10mA
RECOMMENDED C OUT ESR
V OUT = 3.3V
C ESR < 0.66 Ω
V OUT = 5.0V
C ESR < 1 Ω
0.8
0.6
I OUT ≤ 50mA
I OUT ≤ 100mA
C ESR < 0.132 Ω
C ESR < 66m Ω
C ESR < 0.2 Ω
C ESR < 0.1 Ω
0.4
0.2
0
10
20
30
40
50
60
70
80
90
110 130 150
100 120 140
TEMPERATURE ( ° C)
Figure 2. 8-Pin SO-EP Maximum Power Dissipation vs.
Temperature
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5091AATA+ | 制造商:Maxim Integrated Products 功能描述:28V, 100MA, LOW-QUIESCENT-CURRENT LDO WITH RESET AND POWER-F - Rail/Tube |
| MAX5091AATA+T | 功能描述:低压差稳压器 - LDO 28V 100mA Low-Q LDO 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 |
| MAX5091BASA+ | 功能描述:低压差稳压器 - LDO 28V 100mA Low-Q LDO 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 |
| MAX5091BASA+T | 功能描述:低压差稳压器 - LDO 28V 100mA Low-Q LDO 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 |
| MAX5091BATA+ | 制造商:Maxim Integrated Products 功能描述:REG LDO LIN FIX POS 3.3V 0.1A 8TDFN EP - Rail/Tube |
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