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| 型号： | MAX667ESA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V/ADJ .25A 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 5V，1.3 V ~ 16 V |
| 输入电压： | 3.5 V ~ 16.5 V |
| 电压 - 压降（标准）： | 0.15V @ 250mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 250mA（最小） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1409 (CN2011-ZH PDF) |
+5V/Programmable Low-Dropout
Voltage Regulator
C1
8
IN
OUT
2
+5V OUT
8
IN
OUT
2
10 μ F
+5V OUT
MAX667
R
MAX667
R2
1M
10 μ F
5
SHDN
SET
6
GND
DD
SET
GND
SHDN
4
1
R1
332k
6
4
5
R3
1M
Figure 5. Alternative Stability Scheme Using Resistor R
Figure 7. Connection for Minimum Quiescent Current Near
Dropout
10
8
IN
OUT
2
+5V OUT
VSHDN = 0V
MAX667
C1
10 μ F
8
6
DD
1
4
SET
GND
SHDN
6
4
5
2
R1
47k
C2
0.1 μ F
0
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
Figure 6. Quiescent-Current Reduction Below Dropout
put-capacitor ESR and this series resistance should, at
minimum, meet the requirements shown in Figure 4.
An upper limit to the output-capacitor ESR is important
only if step changes to the load are anticipated. Higher
ESR results in higher-amplitude output-voltage tran-
sients when the output current is varied. A Sanyo
OS-CON capacitor, whose ESR is nearly flat over tem-
perature (and is low to begin with), in series with the
appropriate resistor ensures the best load-transient
performance. A less expensive alternative is to use a
tantalum capacitor in series with the resistor.
Figure 8. Quiescent Current Below Dropout for Circuit of
Figure 2
In most cases, inexpensive aluminum-electrolytic
capacitors work well with the MAX667 over their entire
temperature range, having sufficient ESR to ensure sta-
bility without the need for a series resistor. The ESR of
aluminum electrolytics rises, often dramatically, as tem-
perature decreases. For surface-mount applications,
certain tantalum capacitors have sufficient ESR; an
example is the TAJB106K016 chip capacitor made by
AVX (phone: (803) 448-9411, fax: (803) 448-1943).
Battery Drain
The MAX667 uses a PNP output transistor. When the
input voltage falls below the desired output voltage, the
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX667ESA+ | 功能描述:低压差稳压器 - LDO 5V Programmable Voltage Regulator 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 |
| MAX667ESA+T | 功能描述:低压差稳压器 - LDO 5V Programmable Voltage Regulator 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 |
| MAX667ESA-T | 功能描述:低压差稳压器 - LDO 5V Programmable Voltage Regulator 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 |
| MAX667MJA | 功能描述:低压差稳压器 - 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 |
| MAX667MJA/883B | 功能描述:低压差稳压器 - LDO 5V Programmable Voltage Regulator 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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