- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383588 > MCP1827 (Microchip Technology Inc.) 1.5A, Low Voltage, Low Quiescent Current LDO Regulator PDF資料下載
參數(shù)資料
| 型號： | MCP1827 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 1.5A, Low Voltage, Low Quiescent Current LDO Regulator |
| 中文描述： | 1.5安培的電流，低電壓，低靜態(tài)電流LDO穩(wěn)壓器 |
| 文件頁數(shù)： | 19/32頁 |
| 文件大小： | 695K |
| 代理商： | MCP1827 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁當前第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
2007 Microchip Technology Inc.
DS22001C-page 19
MCP1827/MCP1827S
5.0
APPLICATION
CIRCUITS/ISSUES
5.1
Typical Application
The MCP1827/MCP1827S is used for applications that
require high LDO output current and a power good
output.
FIGURE 5-1:
Typical Application Circuit.
5.1.1
APPLICATION CONDITIONS
5.2
Power Calculations
5.2.1
POWER DISSIPATION
The
MCP1827/MCP1827S is a function of input voltage,
output voltage, output current and quiescent current.
Equation 5-1 can be used to calculate the internal
power dissipation for the LDO.
internal
power
dissipation
within
the
EQUATION 5-1:
P
LDO
Where:
In addition to the LDO pass element power dissipation,
there
is
power
dissipation
MCP1827/MCP1827S 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:
within
the
EQUATION 5-2:
The
MCP1827/MCP1827S is the sum of the power dissi-
pated in the LDO pass device and the P(I
GND
) term.
Because of the CMOS construction, the typical I
GND
for
the MCP1827/MCP1827S is 120 μA. Operating at a
maximum of 3.465V results in a power dissipation of
0.49 milli-Watts. For most applications, this is small
compared to the LDO pass device power dissipation
and can be neglected.
total
power
dissipated
within
the
The
temperature specified for the MCP1827/MCP1827S is
+125
°
C
.
To estimate the internal junction temperature
of the MCP1827/MCP1827S, 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.
maximum
continuous
operating
junction
EQUATION 5-3:
Package Type = TO-220-5
Input Voltage Range = 3.3V ± 5%
V
IN
maximum = 3.465V
V
IN
minimum = 3.135V
V
DROPOUT (max)
= 0.550V
V
OUT
(typical) = 2.5V
I
OUT
= 1.5A maximum
P
DISS
(typical) = 1.2W
Temperature Rise = 35.2
°
C
10 μF
V
OUT
= 2.5V @ 1.5A
R
1
C
10 k
Ω
PWRGD
SHDN
GND
2
4.7 μF
On
Off
C
MCP1827-2.5
1
3 4 5
3.3V
V
IN
V
IN MAX
)
)
V
OUT MIN
)
–
(
)
I
OUT MAX
)
)
×
=
P
LDO
=
LDO Pass device internal
power dissipation
Maximum input voltage
LDO minimum output voltage
V
IN(MAX)
V
OUT(MIN)
=
=
P
I GND
)
V
IN MAX
)
I
VIN
×
=
Where:
P
I(GND
=
Power dissipation due to the
quiescent current of the LDO
Maximum input voltage
Current flowing in the V
IN
pin
with no LDO output current
(LDO quiescent current)
V
IN(MAX)
=
=
I
VIN
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MCP18480 | -48V Hot Swap Controller |
| MCP201 | LIN Transceiver with Voltage Regulator(帶有集成Vreg的線收發(fā)器) |
| MCP2120 | low-cost, high-performance, fully-static infrared encoder/decoder.(帶有硬件/軟件波特率選擇的UART到IR編譯碼器) |
| MCP2140 | IrDA Standard Protocol Stack Controller With Fixed 9600 Baud Communication Rate(固定波特率,低成本,IrDA標準協(xié)議編譯碼器) |
| MCP2150 | DEVELOPER’S KIT USER’S GUIDE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP1827-0802E/AT | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.5A CMOS 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1827-0802E/ET | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.5A CMOS 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1827-1202E/AT | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.5A CMOS 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1827-1202E/ET | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.5A CMOS 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1827-1802E/AT | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.5A CMOS 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)。