參數(shù)資料
型號： MCP1700T-5002ETT
廠商： Microchip Technology Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Low Quiescent Current LDO
中文描述： 低靜態(tài)電流低壓降穩(wěn)壓器
文件頁數(shù)： 13/24頁
文件大小： 638K
代理商： MCP1700T-5002ETT
2007 Microchip Technology Inc.
DS21826B-page 13
MCP1700
6.0
APPLICATION CIRCUITS &
ISSUES
6.1
Typical Application
The MCP1700 is most commonly used as a voltage
regulator. It’s low quiescent current and low dropout
voltage make it ideal for many battery-powered
applications.
FIGURE 6-1:
Typical Application Circuit.
6.1.1
APPLICATION INPUT CONDITIONS
6.2
Power Calculations
6.2.1
POWER DISSIPATION
The internal power dissipation of the MCP1700 is a
function of input voltage, output voltage and output
current. The power dissipation, as a result of the
quiescent current draw, is so low, it is insignificant
(1.6 μA x V
IN
). The following equation can be used to
calculate the internal power dissipation of the LDO.
EQUATION 6-1:
The
temperature specified for the MCP1700 is +125
°
C
.
To
estimate the internal junction temperature of the
MCP1700, the total internal power dissipation is
multiplied by the thermal resistance from junction to
ambient (R
θ
JA
). The thermal resistance from junction to
ambient for the SOT-23 pin package is estimated at
230
°
C/W.
maximum
continuous
operating
junction
EQUATION 6-2:
The maximum power dissipation capability for a
package can be calculated given the junction-to-
ambient thermal resistance and the maximum ambient
temperature for the application. The following equation
can be used to determine the package maximum
internal power dissipation.
EQUATION 6-3:
EQUATION 6-4:
EQUATION 6-5:
Package Type = SOT-23
Input Voltage Range = 2.3V to 3.2V
V
IN
maximum = 3.2V
V
OUT
typical = 1.8V
I
OUT
= 150 mA maximum
MCP1700
GND
V
OUT
V
IN
C
IN
1 μF Ceramic
C
OUT
1 μF Ceramic
V
OUT
1.8V
V
IN
(2.3V to 3.2V)
I
OUT
150 mA
P
LDO
V
IN MAX
)
)
V
OUT MIN
)
–
(
)
I
OUT MAX
)
)
×
=
P
LDO
= LDO Pass device internal power dissipation
V
IN(MAX)
= Maximum input voltage
V
OUT(MIN)
= LDO minimum output voltage
T
J MAX
)
P
TOTAL
R
θ
JA
×
T
AMAX
+
=
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
D MAX
)
T
------------------------–
T
R
θ
JA
)
(
)
=
P
D(MAX)
= Maximum device power dissipation.
T
J(MAX)
= Maximum continuous junction
temperature.
T
A(MAX)
= Maximum ambient temperature.
R
θ
JA
= Thermal resistance from junction to ambient.
T
J RISE
)
P
D MAX
)
R
θ
JA
×
=
T
J(RISE)
= Rise in device junction temperature over
the ambient temperature.
P
TOTAL
= Maximum device power dissipation.
R
θ
JA
= Thermal resistance from junction to ambient.
T
J
T
J RISE
)
T
A
+
=
T
J
= Junction Temperature.
T
J(RISE)
= Rise in device junction temperature over
the ambient temperature.
T
A
= Ambient temperature.
相關(guān)PDF資料
PDF描述
MCP1701A 2??A Low-Dropout Positive Voltage Regulator
MCP1702 250 mA Low Quiescent Current LDO Regulator
MCP1703 250 mA, 16V, Low Quiescent Current
MCP1725 500 mA, Low Voltage, Low Quiescent Current LDO Regulator
MCP1726 1A, Low Voltage, Low Quiescent Current LDO Regulator
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP1701-1802I/TO 功能描述:低壓差穩(wěn)壓器 - LDO 250mA Adj LDO 2% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
MCP1701-2502I/TO 功能描述:低壓差穩(wěn)壓器 - LDO 250mA Adj LDO 2% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
MCP1701-3002I/TO 功能描述:低壓差穩(wěn)壓器 - LDO 250mA Adj LDO 2% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
MCP1701-3302I/TO 功能描述:低壓差穩(wěn)壓器 - LDO 250mA Adj LDO 2% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
MCP1701-5002I/TO 功能描述:低壓差穩(wěn)壓器 - LDO 250mA Adj LDO 2% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*