Datasheet > 电源电路 > 开关式稳压器或控制器> LM34919BQTL

LM34919BQTL

更新时间： 2024-09-17 05:42:03

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器开关式稳压器或控制器电源电路开关式控制器
页数	文件大小	规格书
20页	483K
描述
Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator

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技术参数
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LM34919BQTL 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.62
Is Samacsys：	N	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
JESD-30 代码：	R-PBGA-B10	端子数量：	10
封装主体材料：	PLASTIC/EPOXY	封装形状：	RECTANGULAR
封装形式：	GRID ARRAY	认证状态：	Not Qualified
表面贴装：	YES	端子形式：	BALL
端子位置：	BOTTOM	Base Number Matches：	1

LM34919BQTL 数据手册

May 26, 2010

LM34919B

Ultra Small 40V, 600 mA Constant On-Time Buck Switching

Regulator

General Description

Features

The LM34919B Step Down Switching Regulator features all

of the functions needed to implement a low cost, efficient,

buck bias regulator capable of supplying 0.6A to the load. This

buck regulator contains an N-Channel Buck Switch, and is

available in a micro SMD package. The constant on-time

feedback regulation scheme requires no loop compensation,

results in fast load transient response, and simplifies circuit

implementation. The operating frequency remains constant

with line and load variations due to the inverse relationship

between the input voltage and the on-time. The valley current

limit results in a smooth transition from constant voltage to

constant current mode when current limit is detected, reduc-

ing the frequency and output voltage, without the use of

foldback. Additional features include: VCC under-voltage

lockout, thermal shutdown, gate drive under-voltage lockout,

and maximum duty cycle limiter.

AEC-Q100 Grade 1 qualified (-40°c to 125°c)

■

Maximum switching frequency: 2.6 MHz

(V_IN=14V,V_o=3.3V)

Input Voltage Range: 6V to 40V

■

Integrated N-Channel buck switch

Integrated start-up regulator

No loop compensation required

Ultra-Fast transient response

Operating frequency remains constant with load current

and input voltage

Maximum Duty Cycle Limited During Start-Up

■

Adjustable output voltage

Valley Current Limit At 0.64A

Precision internal reference

Low bias current

Highly efficient operation

Thermal shutdown

Typical Applications

Automotive Safety and Infotainment

■

High Efficiency Point-Of-Load (POL) Regulator

Non-Isolated Telecommunication Buck Regulator

Secondary High Voltage Post Regulator

Package

micro SMD (2mm x 2mm)

■

Basic Step Down Regulator

30102731

301027

www.national.com

12 3 4 5 6 7...20

中文翻译

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与LM34919BQTL相关器件

型号	品牌	获取价格	描述	数据表
LM34919BQTL/NOPB	TI	获取价格	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator
LM34919BQTLX	NSC	获取价格	Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator
LM34919BQTLX/NOPB	TI	获取价格	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator
LM34919BTL	NSC	获取价格	Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator
LM34919BTL/NOPB	TI	获取价格	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator
LM34919BTLX	NSC	获取价格	Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator
LM34919BTLX/NOPB	TI	获取价格	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator
LM34919C-Q1	TI	获取价格	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator
LM34919CQSD/NOPB	TI	获取价格	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator
LM34919CQSDX/NOPB	TI	获取价格	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator

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