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參數(shù)資料
| 型號： | MP1531DM |
| 廠商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Low Power, Triple Output Step-Up Plus Charge Pump for TFT Bias |
| 中文描述： | 0.65 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | MO-153AB, TSSOP-16 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 359K |
| 代理商： | MP1531DM |
MP1531 – LOW POWER, TRIPLE OUTPUT STEP-UP PLUS CHARGE PUMP FOR TFT BIAS
MP1531 Rev. 1.2
5/22/2006
www.MonolithicPower.com
8
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
Selecting the Inductor
The inductor is required to force the higher
output voltage while being driven by the input
voltage. A larger value inductor results in less
ripple current that results in lower peak inductor
current. However, the larger value inductor has
a larger physical size, higher series resistance,
lower saturation current for a given package
size.
Choose an inductor that does not saturate at
heavy load transients and start-up conditions. A
good rule for determining the inductance is to
allow the peak-to-peak ripple current to be
approximately 30-50% of the maximum input
current. Make sure that the peak inductor
current is below the device current limit to
prevent loss of regulation. Calculate the
required inductance value by the equation:
(
)
I
f
V
V
×
V
V
1
L
SW
MAIN
IN
MAIN
×
IN
=
Where V
IN
is the input voltage, f
SW
is the
switching frequency, and
I is the peak-to-peak
inductor ripple current.
Selecting the Input Capacitor
An input capacitor is required to supply the AC
ripple current to the inductor, while limiting noise
at the input source. A low ESR capacitor is
required to keep the noise at the IC to a minimum.
Since it absorbs the input switching current it
requires an adequate ripple current rating. Use a
capacitor with RMS current rating greater than the
inductor ripple current (see
Selecting The Inductor
to determine the inductor ripple current). The
input capacitor in Figure 3 is necessary in most
lab setups, but can be reduced in typical
application circuits if the source impedance is
lower.
MP1531
SW
FB1
IN
CT
PGND
GND
FB3
GH
IN3
REF
EN
COMP
RDY
RDY
SW
IN2
GL
FB2
V
GL
-10V
C9
56pF
C3
10nF
C4
10nF
D1
B0530W
V
IN
2.7V to 4.2V
V
MAIN
5V
V
GH
15V
C7
56pF
D2
BAS40-04-7
D3
BAS40-04-7
D4
BAS40-04-7
D5
BAS40-04-7
D7
BAS40-04-7
D6
BAS40-04-7
OFF ON
Figure 3—Triple Output Boost Application Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MP1531DM-LF | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Low Pwr 3-Output Step-Up for TFT Bias RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MP1531DM-LF-Z | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Low Pwr 3-Output Step-Up for TFT Bias RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MP1531DQ | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:Low Power, Triple Output Step-Up Plus Charge Pump for TFT Bias |
| MP1531DQ-LF-P | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Low Pwr 3-Output Step-Up for TFT Bias RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MP1531DQ-LF-Z | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Low Pwr 3-Output Step-Up for TFT Bias RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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