- 您现在的位置：买卖IC网 > PDF目录1852 > MCP1825T-3302E/DC (Microchip Technology)IC REG LDO 3.3V .5A SOT223-5 PDF资料下载
参数资料
| 型号： | MCP1825T-3302E/DC |
| 厂商： | Microchip Technology |
| 文件页数： | 20/38页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V .5A SOT223-5 |
| 产品培训模块： | High Current LDOs |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.3V |
| 输入电压： | 最高 6V |
| 电压 - 压降（标准）： | 0.21V @ 500mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA（最小） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-223-6 |
| 供应商设备封装： | SOT-223-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 666 (CN2011-ZH PDF) |
| 其它名称： | MCP1825T-3302E/DCDKR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页当前第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页
MCP1825/MCP1825S
5.0
5.1
APPLICATION CIRCUITS/
ISSUES
Typical Application
In addition to the LDO pass element power dissipation,
there is power dissipation within the MCP1825/
MCP1825S as a result of quiescent or ground current.
The power dissipation as a result of the ground current
can be calculated using the following equation:
The MCP1825/MCP1825S is used for applications that
require high LDO output current and a power good
output.
EQUATION 5-2:
P I ( GND ) = V IN ( MAX ) × I VIN
Where:
O ff
On
SHDN
MCP1825-2.5
1 2 3 4 5
V OUT = 2.5V @ 500 mA
R 1
10 k Ω C 2
10 μF
P I(GND
V IN(MAX)
=
=
Power dissipation due to the
quiescent current of the LDO
Maximum input voltage
3.3V
V IN
I VIN
=
Current flowing in the V IN pin
with no LDO output current
C 1
4.7 μF
(LDO quiescent current)
GND
PWRGD
The total power dissipated within the MCP1825/
MCP1825S is the sum of the power dissipated in the
FIGURE 5-1:
Typical Application Circuit.
LDO pass device and the P(I GND ) term. Because of the
5.1.1
APPLICATION CONDITIONS
CMOS construction, the typical I GND for the MCP1825/
MCP1825S is 120 μA. Operating at a maximum V IN of
Package Type
Input Voltage Range
V IN maximum
V IN minimum
V DROPOUT (max)
V OUT (typical)
I OUT
P DISS (typical)
Temperature Rise
=
=
=
=
=
=
=
=
=
TO-220-5
3.3V ± 5%
3.465V
3.135V
0.350V
2.5V
500 mA maximum
0.483W
14.2°C
3.465V results in a power dissipation of 0.12 milli-Watts
for a 2.5V output. For most applications, this is small
compared to the LDO pass device power dissipation
and can be neglected.
The maximum continuous operating junction
temperature specified for the MCP1825/MCP1825S is
+125°C . To estimate the internal junction temperature
of the MCP1825/MCP1825S, the total internal power
dissipation is multiplied by the thermal resistance from
junction to ambient (R θ JA ) of the device. The thermal
resistance from junction to ambient for the TO-220-5
package is estimated at 29.3°C/W.
5.2
5.2.1
Power Calculations
POWER DISSIPATION
EQUATION 5-3:
T J ( MAX ) = P TOTAL × R θ JA + T AMAX
The internal power dissipation within the MCP1825/
MCP1825S is a function of input voltage, output
voltage, output current and quiescent current.
power dissipation for the LDO.
EQUATION 5-1:
P LDO = ( V IN ( MAX ) ) – V OUT ( MIN ) ) × I OUT ( MAX ) )
Where:
T J(MAX) = Maximum continuous junction
temperature
P TOTAL = Total device power dissipation
R θ JA = Thermal resistance from junction to
ambient
T AMAX = Maximum ambient temperature
P LDO
V IN(MAX)
V OUT(MIN)
=
=
=
LDO Pass device internal
power dissipation
Maximum input voltage
LDO minimum output voltage
DS22056B-page 20
? 2008 Microchip Technology Inc.
相关PDF资料 |
PDF描述 |
|---|---|
| MCP1826T-5002E/DC | IC REG LDO 5V 1A SOT223-5 |
| MCP1827-3302E/ET | IC REG LDO 3.3V 1.5A DDPAK-5 |
| MCP73113T-06SI/MF | IC LI-ION/LI-POLY CTRLR 10-DFN |
| MCP73830T-2AAI/MYY | IC BATT MGMT LI-ION 1A 6TDFN |
| MCP73855-I/MF | IC CONTROLLER LI-ION 4.5V 10DFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP1825T-5002E/DC | 功能描述:低压差稳压器 - LDO 500 mA CMOS LDO Vout 5.0V ETR 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 |
| MCP1825T-5002E/ET | 功能描述:低压差稳压器 - LDO 500 mA CMOS LDO Vout 5.0V ETR 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 |
| MCP1825T-ADJE/DC | 功能描述:低压差稳压器 - LDO 500 mA CMOS LDO Adjust Vout ETR 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 |
| MCP1825T-ADJE/DC-CUT TAPE | 制造商:Microchip 功能描述:MCP1825 Series 500 mA Adjustable Low Quiescent Current LDO Regulator SOT-223-5 |
| MCP1825T-ADJE/ET | 功能描述:低压差稳压器 - LDO 500 mA CMOS LDO Adjust Vout ETR 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 |
发布紧急采购，3分钟左右您将得到回复。