- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383586 > MCP1726 (Microchip Technology Inc.) 1A, Low Voltage, Low Quiescent Current LDO Regulator PDF資料下載
參數(shù)資料
| 型號： | MCP1726 |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 1A, Low Voltage, Low Quiescent Current LDO Regulator |
| 中文描述： | 1A中，低電壓，低靜態(tài)電流LDO穩(wěn)壓器 |
| 文件頁數(shù)： | 18/30頁 |
| 文件大?。?/td> | 431K |
| 代理商： | MCP1726 |
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頁當(dāng)前第18頁第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
MCP1726
DS21936B-page 18
2005 Microchip Technology Inc.
5.0
APPLICATION
CIRCUITS/ISSUES
5.1
Typical Application
The MCP1726 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 internal power dissipation within the MCP1726 is a
function of input voltage, output voltage, output current
and quiescent current. The following equation can be
used to calculate the internal power dissipation for the
LDO.
EQUATION 5-1:
In addition to the LDO pass element power dissipation,
there is power dissipation within the MCP1726 as a
result of quiescent or ground current. The power dissi-
pation as a result of the ground current can be
calculated using the following equation:
EQUATION 5-2:
The total power dissipated within the MCP1726 is the
sum of the power dissipated in the LDO pass device
and the P(I
GND
) term. Because of the CMOS construc-
tion, the typical I
GND
for the MCP1726 is 140 μA.
Operating at a maximum of 3.63V results in a power
dissipation of 0.51 milli-Watts. For most applications,
this is small compared to the LDO pass device power
dissipation and can be neglected.
The maximum continuous operating junction tempera-
ture specified for the MCP1726 is +125
°
C
.
To estimate
the internal junction temperature of the MCP1726, the
total internal power dissipation is multiplied by the ther-
mal resistance from junction to ambient (R
θ
JA
) of the
device. The thermal resistance from junction to ambi-
ent for the 3X3DFN package is estimated at 41
°
C/W.
EQUATION 5-3:
Package Type = 3X3DFN8
Input Voltage Range = 3.3V ± 10%
V
IN
maximum = 3.63V
V
IN
minimum = 2.97V
V
OUT
typical = 2.5V
I
OUT
= 1.0A maximum
V
IN
V
IN
SHDN
GND PWRGD
C
DELAY
V
OUT
V
OUT
1
2
3
4
5
6
7
8
10 μF
V
OUT
= 2.5V @ 1A
10 μF
V
IN
= 3.3V
On
Off
R
1
C
C
1000 pF
C
3
MCP1726-2.5
10k
Ω
PWRGD
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
P
I GND
)
V
IN MAX
)
I
VIN
×
=
P
I(GND)
= Power dissipation due to the
quiescent current of the LDO
V
IN(MAX)
= Maximum input voltage
I
VIN
= Current flowing in the V
IN
pin with
no LDO output current (LDO
quiescent current)
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 |
|---|---|
| MCP1727 | 1.5A, Low Voltage, Low Quiescent Current LDO Regulator |
| MCP1801 | 150 mA, High PSRR, Low Quiescent Current LDO |
| MCP1802 | 300 mA, High PSRR, Low Quiescent Current LDO |
| MCP1827T-1202EAB | 1.5A, Low Voltage, Low Quiescent Current LDO Regulator |
| MCP1827-5002EAB | 1.5A, Low Voltage, Low Quiescent Current LDO Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP1726-0802E/MF | 功能描述:低壓差穩(wěn)壓器 - LDO 1A .8V Vout Extended Temp 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 |
| MCP1726-0802E/SN | 功能描述:低壓差穩(wěn)壓器 - LDO 1A .8V Vout Extended Temp 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 |
| MCP1726-1202E/MF | 功能描述:低壓差穩(wěn)壓器 - LDO 1A 1.2V Vout Extended Temp 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 |
| MCP1726-1202E/SN | 功能描述:低壓差穩(wěn)壓器 - LDO 1A 1.2V Vout Extended Temp 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 |
| MCP1726-1802E/MF | 功能描述:低壓差穩(wěn)壓器 - LDO 1A 1.8V Vout Extended Temp 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)。