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参数资料
| 型号： | MIC3730-1.8BR |
| 厂商： | MICREL INC |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | 1.8 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PSSO5 |
| 封装： | SPAK-5 |
| 文件页数： | 9/10页 |
| 文件大小： | 626K |
| 代理商： | MIC3730-1.8BR |
MIC37300/37301/37302
Micrel, Inc.
M9999-110305
8
November 2005
Minimum Load Current
The MIC37300/01/02 regulator is specied between nite
loads. If the output current is too small, leakage currents
dominate and the output voltage rises. A 10mA minimum
load current is necessary for proper operation.
Error Flag
The MIC37301 features an error ag circuit that monitors
the output voltage and signals an error condition when the
voltage is 5% below the nominal output voltage. The error
ag is an open-collector output that can sink 10mA during a
fault condition.
Low output voltage can be caused by a number of problems,
including an overcurrent fault (device in current limit) or low
input voltage. The ag is inoperative during overtemperature
shutdown.
Enable Input
The MIC37301/37302 also features an enable input for
on/off control of the device. Its shutdown state draws “zero”
current (only microamperes of leakage). The enable input is
TTL/CMOS compatible for simple logic interface, but can be
connected up to VIN. When enabled, it draws approximately
15A.
Adjustable Regulator Design
IN
R1
VOUT
VIN
COUT
R2
EN
OUT
ADJ
GND
MIC37302
ENABLE
SHUTDOWN
V
1.240V 1 R1
R2
OUT =
+
Figure 2. Adjustable Regulator with Resistors
The MIC37302 allows programming the output voltage any-
wherebetween1.24Vandthe5.5Vmaximumoperatingrating
of the family. Two resistors are used. Resistors can be quite
large, up to 1MΩ, because of the very high input impedance
and low bias current of the sense comparator. The resistor
values are calculated by:
R1 R2
V
1.240
1
OUT
=
Where VOUT is the desired output voltage. Figure 2 shows
component denition. Applications with widely varying load
currents may scale the resistors to draw the minimum load
current required for proper operation (see above).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC37302 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:3.0A, LOW VOLTAGE UCAP LDO REGULATOR |
| MIC37302BR | 功能描述:IC REG LDO ADJ 3A 5SPAK 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 |
| MIC37302BR TR | 功能描述:IC REG LDO ADJ 3A 5SPAK 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 |
| MIC37302BRTR | 制造商:Micrel Inc 功能描述: |
| MIC37302BU | 功能描述:IC REG LDO ADJ 3A TO-263-5 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 |
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