LM34930

更新时间： 2024-09-18 05:42:03

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器开关
页数	文件大小	规格书
18页	370K
描述
Ultra Small 33V, 1A Constant On-Time Buck Switching Regulator with Intelligent Current Limit

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM34930 数据手册

June 23, 2008

LM34930

Ultra Small 33V, 1A Constant On-Time Buck Switching

Regulator with Intelligent Current Limit

General Description

Features

The LM34930 constant On-Time Step Down Switching Reg-

ulator features all the functions needed to implement a low

cost, efficient, buck bias regulator capable of supplying in ex-

cess of 1A load current. This high voltage regulator contains

an N-Channel Buck Switch, and is available in a µSMD

bumped package. The constant on-time regulation principle

requires no loop compensation, results in fast load transient

response, and simplifies circuit implementation. The operat-

ing frequency remains constant with line and load. The valley

current limit results in a smooth transition from constant volt-

age to constant current mode when current limit is detected

without the use of current limit foldback. To reduce the pos-

sibility of saturating the inductor the valley current limit thresh-

old reduces as the input voltage increases, and the on-time

is reduced when current limit is detected. Additional features

include: Over-voltage indicator, Input over-voltage shutdown,

Vcc under-voltage lock-out, thermal shutdown, and maximum

duty cycle limiting.

Operating Input Voltage Range: 8V to 33V

■

Input over-voltage shutdown at 36V

Input absolute maximum rating of 44V

Integrated 1A N-Channel buck switch

Adjustable output voltage from 2.5V

Switching frequency adjustable to 2 MHz

Switching frequency remains nearly constant with load

current and input voltage

Ultra-fast transient response

■

No loop compensation required

Adjustable soft-start timing

Thermal shutdown

Precision 2% feedback reference

Input Over-Voltage indicator at 19V

Current limit scheme helps prevent inductor from

saturation in load fault conditions

Package

Micro SMD –12, 1.77 mm x 2.1 mm

■

Typical Application, Basic Step-Down Regulator

30060801

300608

www.national.com

12 3 4 5 6 7...18

中文翻译

下载PDF

与LM34930相关器件

型号	品牌	获取价格	描述	数据表
LM34930TL	NSC	获取价格	Ultra Small 33V, 1A Constant On-Time Buck Switching Regulator with Intelligent Current Lim
LM34930TL/NOPB	TI	获取价格	Ultra Small 33V, 1A Constant On-Time Buck Switching Regulator with Intelligent Current Lim
LM34930TLX	NSC	获取价格	Ultra Small 33V, 1A Constant On-Time Buck Switching Regulator with Intelligent Current Lim
LM34936	TI	获取价格	30V 宽输入电压同步 4 开关降压/升压控制器
LM34936-Q1	TI	获取价格	汽车类、30V 宽输入电压同步 4 开关降压/升压控制器
LM34936QPWPRQ1	TI	获取价格	汽车类、30V 宽输入电压同步 4 开关降压/升压控制器 \| PWP \| 28 \| -40
LM34936QPWPTQ1	TI	获取价格	汽车类、30V 宽输入电压同步 4 开关降压/升压控制器 \| PWP \| 28 \| -40
LM34936RHFR	TI	获取价格	30V 宽输入电压同步 4 开关降压/升压控制器 \| RHF \| 28 \| -40 to
LM34936RHFT	TI	获取价格	30V 宽输入电压同步 4 开关降压/升压控制器 \| RHF \| 28 \| -40 to
LM34937	TI	获取价格	Wide Input Range Synchronous Buck Controller

与LM34930相关文章

摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

20
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

18
SL74HC10N：高性能三输入与非门解析
2024-09-03

95
AIC1781A 电池充电控制器深度解析
2024-09-03

86

产品中心

服务支持

精选活动

关于我们

帮助中心

LM34930

LM34930 数据手册

与LM34930相关器件

与LM34930相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LM34930

LM34930 数据手册

与LM34930相关器件

与LM34930相关文章

您还可以找

您在本页遇到什么问题？