参数资料
| 型号： | LP2951-02YM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 5/17页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .1A 8-SOIC |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.24 V ~ 29 V |
| 输入电压： | 2.3 V ~ 30 V |
| 电压 - 压降（标准）： | 0.38V @ 100mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 100mA |
| 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： | LP2951-02YMTR LP2951-02YMTR-ND |
Micrel, Inc.
LP2950/2951
Parameter
Input Logic Voltage
Condition
LP295x-02 (±0.5%)
Min
Typ
1.3
Max
Units
V
Low
High
LP295x-03 (±1%)
Low
High
LP2951-4.8 (±1%)
Low
High
2.0
2.0
2.0
1.3
1.3
0.7
0.7
0.7
V
V
V
V
V
V
V
V
Shutdown Input Current
Regulator Output Current
in Shutdown
V SHUTDOWN = 2.4V
V SHUTDOWN = 30V
Note 11
30
450
3
50
100
600
700
10
20
μA
μA
μA
μA
μA
μA
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Boldface limits apply at temperature extremes.
Unless otherwise specified all limits guaranteed for T J = 25°C, V IN = 6V, I L = 100μA and C L = 1μF. Additional conditions for the 8-pin versions are
Feedback tied to 5V Tap and Output tied to Output Sense (V OUT = 5V) and V SHUTDOWN ≤ 0.8V.
Guaranteed and 100% production tested.
Guaranteed but not 100% production tested. These limits are not used to calculate outgoing AQL levels.
Dropout voltage is defined 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.
Comparator thresholds are expressed in terms of a voltage differential at the Feedback terminal below the nominal reference voltage measured at
6V input. To express these thresholds in terms of output voltage change, multiply by the error amplifier 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.
V REF ≤ V OUT ≤ (V IN – 1 V), 2.3V ≤ V IN ≤ 30V, 100μA < I L ≤ 100mA, T J ≤ T JMAX .
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.
May exceed input supply voltage.
10. 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.
11. V SHUTDOWN ≥ 2V, V IN ≤ 30 V, V OUT = 0, with Feedback pin tied to 5V Tap.
12. Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
13. Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or line
regulation effects. Specifications are for a 50mA load pulse at V IN = 30V (1.25W pulse) for t = 10ms.
14. 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 specification for thermal regulation.
15. Line regulation for the LP2951 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.
September 2008
5
M9999-091208
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LP2951-02YN | 功能描述:低压差稳压器 - LDO 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 |
| LP2951-03BJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Fixed & Adjustable Voltage Regulator |
| LP2951-03BM | 功能描述:IC REG LDO ADJ .1A 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 |
| LP2951-03BM TR | 功能描述:IC REG LDO ADJ .1A 8-SOIC 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 |
| LP2951-03BMTR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
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