Datasheet > 电源电路 > 开关式稳压器或控制器> LM3488Q-Q1

LM3488Q-Q1

更新时间： 2024-11-27 11:07:55

品牌	Logo	应用领域
德州仪器 - TI		开关控制器开关式稳压器开关式控制器电源电路开关式稳压器或控制器
页数	文件大小	规格书
33页	1355K
描述
适用于开关稳压器且具有 5µA 关断电流的 40V 宽输入电压、低侧 N 沟道控制器

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LM3488Q-Q1 数据手册

LM3488

LM3488-Q1

www.ti.com

SNVS089M –JULY 2000–REVISED MARCH 2013

High Efficiency Low-Side N-Channel Controller for Switching Regulators

Check for Samples: LM3488, LM3488-Q1

FEATURES

DESCRIPTION

The LM3488 is a versatile Low-Side N-FET high

•

LM3488Q is AEC-Q100 qualified and

performance controller for switching regulators. It is

suitable for use in topologies requiring low side FET,

such as boost, flyback, or SEPIC. Moreover, the

LM3488 can be operated at extremely high switching

frequency in order to reduce the overall solution size.

The switching frequency of LM3488 can be adjusted

to any value between 100kHz and 1MHz by using a

single external resistor or by synchronizing it to an

external clock. Current mode control provides

superior bandwidth and transient response, besides

cycle-by-cycle current limiting. Output current can be

programmed with a single external resistor.

manufactured on an Automotive Grade Flow

•

8-lead VSSOP package

Internal push-pull driver with 1A peak current

capability

•

Current limit and thermal shutdown

Frequency compensation optimized with a

capacitor and a resistor

•

Internal softstart

Current Mode Operation

Undervoltage Lockout with hysteresis

The LM3488 has built in features such as thermal

shutdown, short-circuit protection and over voltage

protection. Power saving shutdown mode reduces the

total supply current to 5µA and allows power supply

sequencing. Internal soft-start limits the inrush current

at start-up.

APPLICATIONS

•

Distributed Power Systems

Notebook, PDA, Digital Camera, and other

Portable Applications

•

Offline Power Supplies

Set-Top Boxes

KEY SPECIFICATIONS

•

Wide supply voltage range of 2.97V to 40V

100kHz to 1MHz Adjustable and

Synchronizable clock frequency

•

±1.5% (over temperature) internal reference

5µA shutdown current (over temperature)

TYPICAL APPLICATION CIRCUIT

Figure 1. Typical SEPIC Converter

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...33

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与LM3488Q-Q1相关器件

型号	品牌	获取价格	描述	数据表
LM3489	NSC	获取价格	Hysteretic PFET Buck Controller with Enable Pin
LM3489	TI	获取价格	具有使能引脚的滞环 PFET 降压控制器
LM3489_08	NSC	获取价格	Hysteretic PFET Buck Controller with Enable Pin
LM3489MM	NSC	获取价格	Hysteretic PFET Buck Controller with Enable Pin
LM3489MM	TI	获取价格	具有使能引脚的滞环 PFET 降压控制器 \| DGK \| 8 \| -40 to 125
LM3489MM/NOPB	TI	获取价格	具有使能引脚的滞环 PFET 降压控制器 \| DGK \| 8 \| -40 to 125
LM3489MMX	NSC	获取价格	Hysteretic PFET Buck Controller with Enable Pin
LM3489MMX/NOPB	TI	获取价格	具有使能引脚的滞环 PFET 降压控制器 \| DGK \| 8 \| -40 to 125
LM3489Q	NSC	获取价格	Hysteretic PFET Buck Controller with Enable Pin
LM3489-Q1	TI	获取价格	具有使能引脚的汽车级 4.5V 至 35V、滞环非同步 PFET 降压控制器

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