参数资料
| 型号： | MIC5306-3.0YD5 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3V .15A TSOT23-5 |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3V |
| 输入电压： | 最高 5.5V |
| 电压 - 压降（标准）： | 0.065V @ 150mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 150mA |
| 电流 - 限制（最小）： | 175mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 供应商设备封装： | TSOT-23-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 1101 (CN2011-ZH PDF) |
| 其它名称： | 576-3012-6 |
Micrel, Inc.
Applications Information
Input Capacitance
A 1 μ F capacitor should be placed from IN to GND if
there is more than 10 inches of wire between the input
and the ac filter capacitor or if a battery is used as the
input.
Output Capacitance
An output capacitor is required between OUT and
GND to prevent oscillation. Larger values improve the
regulator’s transient response. The output capacitor
value may be increased without limit.
The output capacitor should have below ESR 300m ?
and a resonant frequency above 1MHz. Ultra-low-ESR
capacitors can cause a low amplitude oscillation on
the output and/or underdamped transient response.
Most tantalum or aluminum electrolytic capacitors are
MIC5306
is typically < 50 μ A over the load range, the power
dissipation contributed by the ground current is < 1%
and can be ignored for this calculation.
P D = (3.8V – 2.8V) ? 150mA
P D = 0.15W
To determine the maximum ambient operating
temperature of the package, use the junction-to-
ambient thermal resistance of the device and the
following basic equation:
T J (max) – T A
P D (max) =
JA
T J (max) = 125 ° C, the maximum junction temperature
of the die θ JA thermal resistance = 235 ° C/W
Table 1 shows junction-to-ambient thermal resistance
for the MIC5306 in the TSOT23-5 package.
adequate; film types will work, but are more
expensive. Since many aluminum electrolytics have
electrolytes that freeze at about –30 ° C, solid tant-
alums are recommended for operation below –25 ° C.
Package
TSOT23-5
θ JA Recommended
Minimum Footprint
235 ° C/W
θ JC
2 ° C/W
Enable
Forcing EN (enable/shutdown) high (>1V) enables the
regulator. EN is compatible with CMOS logic gates. If
the enable/shutdown feature is not required, connect
EN (pin 3) to IN (supply input, pin 1).
Current Limit
There is overcurrent protection circuitry built into the
MIC5306. Even with the output grounded, current will
be limited to approximately 285mA. Further protection
is provided by thermal shutdown.
Thermal Considerations
The MIC5306 is designed to provide 150mA of
continuous current in a very small package. Maximum
ambient operating temperature can be calculated
based on the output current and the voltage drop
across the part. Given that the input voltage is 3.8V,
the output voltage is 2.8V and the output current
equals 150mA.
The actual power dissipation of the regulator circuit
can be determined using the equation:
P D = (V IN – V OUT ) I OUT + V IN I GND
Because this device is CMOS and the ground current
Table 1. TSOT23-5 Thermal Resistance
Substituting P D for P D (max) and solving for the
ambient operating temperature will give the maximum
operating conditions for the regulator circuit. The
junction-to-ambient thermal resistance for the
minimum footprint is 235 ° C/W, from Table 1. The
maximum power dissipation must not be exceeded for
proper operation.
For example, when operating the MIC5306-2.8 at an
input voltage of 3.8V and 150mA load with a minimum
footprint layout, the maximum ambient operating
temperature T A can be determined as follows:
0.15W = (125°C - T) / 235C°/W
T = 89.75°C
Therefore, a 2.8V application at 150mA of output
current can accept an ambient operating temperature
of 89.8 ° C in a TSOT23-5 package. For a full
discussion of heat sinking and thermal effects on
voltage regulators, refer to the “Regulator Thermals”
section of Micrel’s Designing with Low-Dropout
Voltage Regulators handbook. This information can
be found on Micrel's website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
November 2006
7
M9999-112006-B
相关PDF资料 |
PDF描述 |
|---|---|
| MIC5307-3.0YD5 TR | IC REG LDO 3V .3A TSOT23-5 |
| MIC5308-1.2YD6 TR | IC REG LDO 1.2V .15A TSOT23-6 |
| MIC5309-1.2YMT TR | IC REG LDO 1.2V .3A 6-TMLF |
| MIC5310-OFYML TR | IC REG LDO 2.9V/1.5V .15A 8-MLF |
| MIC5311-NLYML TR | IC REG LDO 2.85V/2.7V .3A 10-MLF |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC5307-1.5YD5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: 制造商:Micrel Inc 功能描述: |
| MIC5307-1.5YD5 TR | 功能描述:低压差稳压器 - LDO 300mA Single Low Iq ULDO (Lead Free) 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 |
| MIC5307-1.5YD5TR | 制造商:RF Micro Devices Inc 功能描述: |
| MIC5307-1.8YD5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: 制造商:Micrel Inc 功能描述: |
| MIC5307-1.8YD5 TR | 功能描述:低压差稳压器 - LDO 300mA Single Low Iq ULDO (Lead Free) 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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