XL4012 降压型直流电源变换器芯片(大功率型)
| 价 格： | 面议 | |
| 型号/规格： | XL4012 | |
| 品牌/商标： | XLSEMI |
12A 300KHz 32V Buck DC to DC Converter XL4012
Rev 2.0 www.xlsemi.com
1
Features
Wide 5V to 32V Input Voltage Range
Output Adjustable from 0.8V to 30V
Maximum Duty Cycle 100%
Minimum Drop Out 0.6V
Fixed 300KHz Switching Frequency
12A Constant Output Current Capability
Internal Optimize Power MOSFET
High efficiency
Excellent line and load regulation
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
Available in TO-220 package
Applications
LCD Monitor and LCD TV
Digital Photo Frame
Set-up Box
ADSL Modem
Telecom / Networking Equipment
General Description
The XL4012 is a 300 KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 12A load with high
efficiency, low ripple and excellent line and
load regulation. Requiring a minimum
number of external components, the regulator
is simple to use and include internal
frequency compensation and a
fixed-frequency oscillator.
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An over
current protection function is built inside.
When short protection function happens, the
operation frequency will be reduced from
300KHz to 60KHz. An internal compensation
block is built in to minimize external
component count.
Figure1. Package Type of XL4012
| 降压型直流电源变换器芯片(大功率型) | |||||
| 产品型号 | 输入电压 | 输出电流 | 开关频率 | 电压版本 | 封装类型 |
| XL4003 | 5V ~ 32V | 4A | 300KHz | Adj (0.8V) | TO252-5L |
| XL4005 | 5V ~ 32V | 5A | 300KHz | Adj (0.8V) | TO263-5L |
| XL4012 | 5V ~ 32V | 12A | 300KHz | Adj (0.8V) | TO220-5L |
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