参数资料
| 型号： | LV5781-TLM-E |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/7页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 3.3V 3A 14HSSOP |
| 标准包装： | 2,000 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 3.3V |
| 输入电压： | 4.5 V ~ 6 V |
| 频率 - 开关： | 180kHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 无 |
| 工作温度： | -30°C ~ 80°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-LSSOP（0.173"，4.40mm 宽）16 引线 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 14-HSSOP |
Ordering number : ENA0663A
LV5781
Bi-CMOS IC
3A, Point-of-load, Chopper-type
http://onsemi.com
Step-down Converter
Overview
The LV5781 is a 1-channel chopper-type (low-side Schottky diode) step-down switching regulator. It incorporates an
80m Ω (typical) power MOSFET to achieve high-efficiency operation for 3A output currents.
The output voltage is set internally to 3.3V. By adding two external resistors, it is possible to set the voltage to any
desired setting above 0.85V. Inrush current at startup can be prevented by the soft start function.
Using the ON/OFF pins, the converter can be set to standby mode in which the current consumption is 10 μ A or less.
Both the load and the IC are protected by means of the overcurrent and thermal protection functions. The converter
uses the HSSOP14 miniature package.
Functions
? 3A, 1-channel chopper-type, step-down switching regulator
? Output voltage: 3.3V
? Setting of any output voltage enabled (external resistors required)
? High efficiency: 90% at IOUT=1A, VO=3.3V
? Miniature package: HSSOP14
? Soft start function
? Standby mode
? Overcurrent protection
? Thermal shutdown
? Fixed frequency: 180kHz
Applications
? LCD TVs
? Game machines
Semiconductor Components Industries, LLC, 2013
August, 2013
13107 MS IM 20070112-S00004 No.A0663-1/7
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