参数资料
| 型号： | MIC2937A-3.3WU TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V .75A TO-263-3 |
| 标准包装： | 750 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.3V |
| 输入电压： | 最高 26V |
| 电压 - 压降（标准）： | 0.37V @ 750mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 750mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-263-4，D²Pak（3 引线+接片），TO-263AA |
| 供应商设备封装： | TO-263-3 |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC2937A-3.3WUTR MIC2937A-3.3WUTR-ND |
MIC2937A/29371/29372
General Description
The MIC2937A family are “bulletproof” ef?cient voltage regu-
lators with very low dropout voltage (typically 40mV at light
loads and 300mV at 500mA), and very low quiescent current
(160μA typical). The quiescent current of the MIC2937A in-
creases only slightly in dropout, thus prolonging battery life.
Key MIC2937A features include protection against reversed
battery, fold-back current limiting, and automotive “load dump”
protection (60V positive transient).
The MIC2937 is available in several con?gurations. The
MIC2937A-xx devices are three pin ?xed voltage regulators
with 3.3V, 5V, and 12V outputs available. The MIC29371 is
a ?xed regulator offering logic compatible ON/OFF switching
input and an error ?ag output. This ?ag may also be used as
a power-on reset signal. A logic-compatible shutdown input
is provided on the adjustable MIC29372, which enables the
regulator to be switched on and off.
Pin Con?guration
Micrel, Inc.
MIC2937A/29371/29372
750mA Low-Dropout Voltage Regulator
Features
? High output voltage accuracy
? Guaranteed 750mA output
? Low quiescent current
? Low dropout voltage
? Extremely tight load and line regulation
? Very low temperature coef?cient
? Current and thermal limiting
? Input can withstand –20V reverse battery and +60V posi-
tive transients
? Error ?ag warns of output dropout
? Logic-controlled electronic shutdown
? Output programmable from 1.24V to 26V(MIC29372)
? Available in TO-220, TO-263, TO-220-5, and TO-263-5
packages.
Applications
? Battery Powered Equipment
? Cellular Telephones
? Laptop, Notebook, and Palmtop Computers
? PCMCIA V CC and V PP Regulation/Switching
? Bar Code Scanners
? Automotive Electronics
? SMPS Post-Regulator/ DC to DC Modules
? High Ef?ciency Linear Power Supplies
1 2 3
INPUT GROUND OUTPUT
TO-263 Package
(MIC2937A-xxBU/WU)
1 2 3 4 5
TO-263-5 Package
(MIC29371/29372BU/WU)
Five Lead Package Pin Functions:
MIC29371 MIC29372
1) Error Adjust
2) Input Shutdown
3) Ground Ground
4) Output Input
5) Shutdown Output
1 2 3
INPUT GROUND OUTPUT
TO-220 Package
(MIC2937A-xxBT/WT)
1 2 3 4 5
TO-220-5 Package
(MIC29371/29372BT/WT)
The TAB is Ground on the TO-220 and TO-263 packages.
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
May 2006
1
MIC2937A/29371/29372
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2937A-5.0BT | 功能描述:IC REG LDO 5V .75A TO220-3 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 |
| MIC2937A-5.0BU | 功能描述:IC REG LDO 5V .75A TO263 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 |
| MIC2937A-5.0BU TR | 功能描述:IC REG LDO 5V .75A TO-263-3 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 |
| MIC2937A-5.0WT | 功能描述:低压差稳压器 - LDO 750mA LDO Fixed Volt.(ROHS Compliant) 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 |
| MIC2937A-5.0WU | 功能描述:低压差稳压器 - LDO 750mA LDO Fixed Volt.(ROHS Compliant) 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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