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參數(shù)資料
| 型號： | MP2112 |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 1MHz, 1A Synchronous Step-Down Converter |
| 中文描述： | 1MHz的，第1A同步降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 283K |
| 代理商： | MP2112 |
MP2112 – 1MHz, 1A SYNCHRONOUS STEP-DOWN CONVERTER
MP2112 Rev. 1.2
3/6/2006
www.MonolithicPower.com
5
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
OPERATION
The MP2112 is a constant frequency current
mode PWM step-down converter. The MP2112
is optimized for low voltage, Li-Ion battery
powered applications where high efficiency and
small size are critical. The MP2112 uses an
external resistor divider to set the output
voltage from 0.6V to 6V. The device integrates
both a main switch and a synchronous rectifier,
which provides high efficiency and eliminates
an external Schottky diode. The MP2112 can
achieve 100% duty cycle. The duty cycle D of a
step-down converter is defined as:
%
100
V
V
%
100
f
T
D
IN
OUT
OSC
ON
×
≈
×
×
=
where T
ON
is the main switch on time, and f
OSC
is the oscillator frequency (1MHz).
VINA/VINB
EN
FB
GND
SW
+
+
--
PWMCMP
PWM
OSC
+
--
EAMP
ICS
SLOPE COMP
FEEDBACK
ERROR\
AMP
0.6V
EAO
CC
17pF
BIAS
&
VOLTAGE
REFERENCE
PWM
CONTROL
LOGIC
1.0MHz
OSCILLATOR
IAMP
10X
CURRENT
SENSE
AMP
DH
DL
+
--
MAIN
SWITCH
(PCH)
SYNCHRONOUS
RECTIFIER
(NCH)
MP2112_BD01
Figure 1—Functional Block Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MP2112DQ | 1MHz, 1A Synchronous Step-Down Converter |
| MP2303 | 3A, 28V, 340KHz Synchronous Rectified Step-Down Converter |
| MP2303_06 | 3A, 28V, 340KHz Synchronous Rectified Step-Down Converter |
| MP2303DN | 3A, 28V, 340KHz Synchronous Rectified Step-Down Converter |
| MP2303DQ | 3A, 28V, 340KHz Synchronous Rectified Step-Down Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MP2112DJ-LF-Z | 功能描述:開關(guān)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(guān)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 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:1MHz, 1A Synchronous Step-Down Converter |
| MP2112DQ-LF-P | 功能描述:開關(guān)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(guān)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(guān)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(guān)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 |
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