参数资料
型号: MCP1703T-3002E/DB
厂商: Microchip Technology
文件页数: 12/32页
文件大小: 0K
描述: IC REG LDO 3V .25A SOT-223-3
标准包装: 4,000
稳压器拓扑结构: 正,固定式
输出电压: 3V
输入电压: 最高 16V
电压 - 压降(标准): 0.625V @ 250mA
稳压器数量: 1
电流 - 输出: 250mA(最小)
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: TO-261-4,TO-261AA
供应商设备封装: SOT-223-3
包装: 带卷 (TR)
其它名称: MCP1703T-3002E/DBTR
MCP1703
4.0
DETAILED DESCRIPTION
4.1
Output Regulation
4.3
Overtemperature
A portion of the LDO output voltage is fed back to the
internal error amplifier and compared with the precision
internal band gap reference. The error amplifier output
will adjust the amount of current that flows through the
P-Channel pass transistor, thus regulating the output
voltage to the desired value. Any changes in input
voltage or output current will cause the error amplifier
to respond and adjust the output voltage to the target
voltage (refer to Figure 4-1 ).
The internal power dissipation within the LDO is a
function of input-to-output voltage differential and load
current. If the power dissipation within the LDO is
excessive, the internal junction temperature will rise
above the typical shutdown threshold of 150°C. At that
point, the LDO will shut down and begin to cool to the
typical turn-on junction temperature of 130°C. If the
power dissipation is low enough, the device will
continue to cool and operate normally. If the power
dissipation remains high, the thermal shutdown
4.2
Overcurrent
protection circuitry will again turn off the LDO,
protecting it from catastrophic failure.
The MCP1703 internal circuitry monitors the amount of
current flowing through the P-Channel pass transistor.
In the event of a short-circuit or excessive output
current, the MCP1703 will turn off the P-Channel
device for a short period, after which the LDO will
attempt to restart. If the excessive current remains, the
cycle will repeat itself.
MCP1703
V IN
Error Amplifier
+V IN
V OUT
Overcurrent
Overtemperature
Voltage
Reference
GND
-
+
FIGURE 4-1:
DS22049F-page 12
Block Diagram.
? 2011 Microchip Technology Inc.
相关PDF资料
PDF描述
RCB35DHFD CONN EDGECARD 70POS .050 SMD
EBM43DRAN CONN EDGECARD 86POS R/A .156 SLD
HCC22DRTN CONN EDGECARD 44POS DIP .100 SLD
UTM1H4R7MPD CAP ALUM 4.7UF 50V 20% RADIAL
HBC40DREH-S93 CONN EDGECARD 80POS .100 EYELET
相关代理商/技术参数
参数描述
MCP1703T-3302E/CB 功能描述:低压差稳压器 - LDO Low Iq 250mA LDO Vin 16V maxVout 3.3V 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
MCP1703T-3302E/DB 功能描述:低压差稳压器 - LDO Low Iq 250mA LDO Vin 16V maxVout 3.3V 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
MCP1703T-3302E/MB 功能描述:低压差稳压器 - LDO Low Iq 250mA LDO Vin 16V maxVout 3.3V 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
MCP1703T-3302E/MC 功能描述:低压差稳压器 - LDO Low Iq 250mA LDO Vin 16V Vout=1.2V 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
MCP1703T-3602E/CB 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Microchip Technology 最大输入电压:16 V 输出电压:3.6 V 回动电压(最大值):1100 mV 输出电流:200 mA 负载调节:2.5 % 输出端数量:1 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-3