- 您现在的位置：买卖IC网 > PDF目录183286 > MP2371DG-Z (MONOLITHIC POWER SYSTEMS INC) SWITCHING REGULATOR, DSO8 PDF资料下载
参数资料
| 型号： | MP2371DG-Z |
| 厂商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, DSO8 |
| 封装： | 2 X 2 MM, MO-229VCCD-3, QFN-8 |
| 文件页数： | 7/10页 |
| 文件大小： | 650K |
| 代理商： | MP2371DG-Z |
MP2371 – 1.8A, 24V, 700KHz STEP-DOWN CONVERTER
MP2371 Rev. 1.0
www.MonolithicPower.com
6
5/26/2008
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2008 MPS. All Rights Reserved.
OPERATION
The MP2371 is a current mode buck regulator.
That is, the EA output voltage is proportional to
the peak inductor current.
At the beginning of a cycle, M1 is off. The EA
output voltage is higher than the current sense
amplifier output, and the current comparator’s
output is low. The rising edge of the 700KHz
CLK signal sets the RS Flip-Flop. Its output
turns on M1 thus connecting the SW pin and
inductor to the input supply.
The increasing inductor current is sensed and
amplified by the Current Sense Amplifier. Ramp
compensation is summed to Current Sense
Amplifier output and compared to the Error
Amplifier output by the PWM Comparator.
When the sum of the Current Sense Amplifier
output and the Slope Compensation signal
exceeds the EA output voltage, the RS Flip-
Flop is reset and the M1 is turned off. The
external Schottky rectifier diode (D1) conducts
the inductor current.
If the sum of the Current Sense Amplifier output
and the Slope Compensation signal does not
exceed the EA output for a whole cycle, then
the falling edge of the CLK resets the Flip-Flop.
The output of the Error Amplifier integrates the
voltage difference between the feedback and
the 0.81V bandgap reference. The polarity is
such that a FB pin voltage lower than 0.8V
increases the EA output voltage. Since the EA
output voltage is proportional to the peak
inductor current, an increase in its voltage also
increases current delivered to the output.
IN
EN
FB
GND
SW
BST
REGULATOR
OSCILLATOR
700KHz
DRIVER
CURRENT SENSE
AMPLIFIER
ERROR
AMPLIFIER
CURRENT
LIMIT
COMPARATOR
PWM
COMPARATOR
D
x20
M1
REGULATOR
REFERENCE
EA
--
+
--
+
--
+
S
R
Q
--
+
27pF
1pF
Figure 1—Functional Block Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| MP2A-470-R | 1 ELEMENT, 47 uH, MOLY PERMALLOY POWDER-CORE, GENERAL PURPOSE INDUCTOR, SMD |
| MP3510W | 35 A, 1000 V, SILICON, BRIDGE RECTIFIER DIODE |
| MP351 | 20 mA, 45 V, 2 CHANNEL, PNP, Si, SMALL SIGNAL TRANSISTOR, TO-52 |
| MP350 | 20 mA, 25 V, 2 CHANNEL, PNP, Si, SMALL SIGNAL TRANSISTOR, TO-52 |
| MP352A | 20 mA, 45 V, 2 CHANNEL, PNP, Si, SMALL SIGNAL TRANSISTOR, TO-52 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MP2377DN-LF-Z | 制造商:Monolithic Power Systems 功能描述:MONOLITHIC STEP-DOWN SWITCH MODE CONVERTER - Tape and Reel |
| MP2378DS-LF | 功能描述:开关变换器、稳压器与控制器 2A 30V 385KHz Step-Down Converter RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MP2378DS-LF-Z | 功能描述:开关变换器、稳压器与控制器 2A 30V 385KHz Step-Down Converter RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MP2378RA | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| MP2380DN-LF | 功能描述:开关变换器、稳压器与控制器 5A 21V 600KHz Nonsync Step-Down RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。