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參數資料
| 型號： | MP2112DQ |
| 廠商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1MHz, 1A Synchronous Step-Down Converter |
| 中文描述： | 2.4 A SWITCHING REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 3 X 3 MM, MO-229VEEA-2, QFN-6 |
| 文件頁數： | 7/8頁 |
| 文件大?。?/td> | 283K |
| 代理商： | MP2112DQ |
MP2112 – 1MHz, 1A SYNCHRONOUS STEP-DOWN CONVERTER
MP2112 Rev. 1.2
3/6/2006
www.MonolithicPower.com
7
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
Table 2—Suggested Surface Mount Inductors
Manufacturer
Coilcraft
Toko
Sumida
Part Number
D63CB
D53LC
CDC5D23B
Inductance (μH)
4.7
4.7
4.7
Max DCR (
)
0.026
0.026
0.062
Saturation
Current (A)
2.0
2.0
1.6
Dimensions
LxWxH (mm
3
)
6.3X6.3X3.5
6.3X6.3X3.5
6.0X6.0X2.5
Table 3—Inductors for Improved Efficiency at 25mA, 50mA, under 100mA Load.
Manufacturer
Coilcraft
Murata
Sumida
Sumida
Part Number
DO1605T-103MX
LQH4C100K04
CR32-100
CR54-100
Inductance (μH)
10
10
10
10
Max DCR (
)
0.3
0.2
0.2
0.1
Saturation
Current (A)
1.0
1.2
1.0
1.2
I
RMS
(A)
0.9
0.8
0.7
1.4
Input Capacitor Selection
The input capacitor (C1) reduces the surge
current drawn from the input and switching
noise from the device. The input capacitor
impedance at the switching frequency must be
less than input source impedance to prevent
high frequency switching current passing to the
input. Ceramic capacitors with X5R or X7R
dielectrics are highly recommended because of
their
low
ESR
and
coefficients. For most applications, a 4.7μF
capacitor is sufficient.
small
temperature
Output Capacitor Selection
The output capacitor (C2) keeps output voltage
ripple small and ensures regulation loop stable.
The output capacitor impedance should remain
low at the switching frequency. Ceramic
capacitors with X5R or X7R dielectrics are
recommended. The output ripple
V
OUT
is
approximately:
(
×
×
L
f
V
OSC
IN
)
×
×
+
×
×
≤
2
C
f
8
1
ESR
V
V
V
V
OSC
OUT
IN
OUT
OUT
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MP2112DQ-LF-P | 功能描述:開關變換器、穩(wěn)壓器與控制器 1A, 6V, 1MHz Synchronous Buck 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MP2112DQ-LF-Z | 功能描述:開關變換器、穩(wěn)壓器與控制器 1A, 6V, 1MHz Synchronous Buck 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MP2113 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:1.5A Synchronous Step-Down Converter with Dynamic Voltage Control |
| MP2113DD | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:1.5A Synchronous Step-Down Converter with Dynamic Voltage Control |
| MP2113DQ-LF-P | 制造商:Monolithic Power Systems 功能描述:1.2A SYNC STEP-DOWN CONVERTER WITH DYNAMIC VOLTAGE CONTROL - Tape and Reel |
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