参数资料
| 型号： | MIC2951-3.3YM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V/ADJ .15A 8SOIC |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 3.3V，1.24 V ~ 29 V |
| 输入电压： | 2 V ~ 30 V |
| 电压 - 压降（标准）： | 0.32V @ 150mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 150mA |
| 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 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC2951-3.3YMTR MIC2951-3.3YMTR-ND |
Micrel, Inc.
MIC2950/2951
Parameter
Shutdown Input Logic Voltage
Condition
MIC295x-02/-05 (±0.5%)
Min
Typ
1.3
Max
Units
V
Low
High
MIC295x-03/-06 (±1%)
Low
High
MIC2951-3.3 (±1%)
Low
High
MIC2951-4.8 (±1%)
Low
High
2.0
2.0
2.0
2.0
1.3
1.3
1.3
0.7
0.7
0.7
0.7
V
V
V
V
V
V
V
V
V
V
V
Shutdown Input Current
Regulator Output Current
in Shutdown
V SHUTDOWN = 2.4V
V SHUTDOWN = 30V
Note 7
30
450
3
50
100
600
750
10
20
μA
μA
μA
μA
μA
μA
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions are recommended.
The junction-to-ambient thermal resistance of the TO-92 package is 180°C/W with 0.4” leads and 160°C/W with 0.25” leads to a PC board. The
thermal resistance of the 8-pin DIP package is 105°C/W junction-to-ambient when soldered directly to a PC board. Junction-to-ambient thermal
resistance for the SOIC (M) package is 160°C/W. Junction-to-ambient thermal resistance for the MM8? (MM) is 250°C/W.
The maximum positive supply voltage of 60V must be of limited duration ( ≤ 100ms) and duty cycle ( ≤ 1%). The maximum continuous supply voltage
is 30V.
When used in dual-supply systems where the output terminal sees loads returned to a negative supply, the output voltage should be diode-clamped
to ground.
V SHDN ≥ 2V, V IN ≤ 30V, V OUT = 0, with the FB pin connected to TAP.
Additional conditions for 8-pin devices are V FB = 5V, TAP and OUT connected to SNS (V OUT = 5V) and V SHDN ≤ 0.8V.
Output or reference voltage temperature coef ? cient is de ? ned as the worst case voltage change divided by the total temperature range.
10. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating
effects are covered in the speci ? cation for thermal regulation.
11. Line regulation for the MIC2951 is tested at 150°C for I L = 1mA. For I L = 100μA and T J = 125°C, line regulation is guaranteed by design to 0.2%.
See Typical Performance Characteristics for line regulation versus temperature and load current.
12. Dropout voltage is de ? ned as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V
differential. At very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into
account.
13. Thermal regulation is de ? ned as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line
regulation effects. Speci ? cations are for a 50mA load pulse at V IN = 30V (1.25W pulse) for t = 10ms.
14. V REF ≤ V OUT ≤ (V IN – 1 V), 2.3V ≤ V IN ≤ 30V, 100μA < I L ≤ 150mA, T J ≤ T JMAX .
15. Comparator thresholds are expressed in terms of a voltage differential at the FB terminal below the nominal reference voltage measured at 6V input.
To express these thresholds in terms of output voltage change, multiply by the error ampli ? er gain = V OUT /V REF = (R1 + R2)/R2. For example, at a
programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by 95mV x 5V/1.235V = 384mV. Thresholds
remain constant as a percent of V OUT as V OUT is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.
16. Speci ? cation for packaged product only.
February 2010
7
M9999-021610
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| MIC2951-4.85BM | 功能描述:IC REG LDO 4.85V/ADJ .15A 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.8V 输入电压:最高 16V 电压 - 压降（标准）:0.3V @ 80mA 稳压器数量:1 电流 - 输出:80mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) 其它名称:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| MIC2951-4.85BM TR | 功能描述:IC REG LDO 4.85V/ADJ .15A 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.8V 输入电压:最高 16V 电压 - 压降（标准）:0.3V @ 80mA 稳压器数量:1 电流 - 输出:80mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) 其它名称:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| MIC2951-4.8BM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC2951-4.8YM | 功能描述:低压差稳压器 - LDO Improved LP2951 Low Drop-out Regulator (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 |
| MIC2951-4.8YM TR | 功能描述:低压差稳压器 - LDO Improved LP2951 Low Drop-out Regulator (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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