LM3488

更新时间： 2024-11-23 12:09:47

品牌	Logo	应用领域
德州仪器 - TI		稳压器开关控制器
页数	文件大小	规格书
33页	1355K
描述
High Efficiency Low-Side N-Channel Controller for Switching Regulators

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LM3488 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LM3488相关器件

型号	品牌	获取价格	描述	数据表
LM3488_05	NSC	获取价格	High Efficiency Low-Side N-Channel Controller for Switching Regulators
LM3488_09	NSC	获取价格	High Efficiency Low-Side N-Channel Controller for Switching Regulators
LM3488MM	TI	获取价格	High Efficiency Low-Side N-Channel Controller for Switching Regulators
LM3488MM	NSC	获取价格	High Efficiency Low-Side N-Channel Controller for Switching Regulators
LM3488MM/NOPB	NSC	获取价格	IC 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO8, MSOP-8, Switching Regulat
LM3488MM/NOPB	TI	获取价格	适用于开关稳压器的 2.97V 至 40V 宽输入电压低侧 N 沟道控制器 \| DGK \|
LM3488MMX	TI	获取价格	High Efficiency Low-Side N-Channel Controller for Switching Regulators
LM3488MMX	NSC	获取价格	High Efficiency Low-Side N-Channel Controller for Switching Regulators
LM3488MMX/NOPB	TI	获取价格	2.97V to 40V Wide Vin Low-Side N-Channel Controller for Switching Regulators 8-VSSOP -40 t
LM3488Q	NSC	获取价格	High Efficiency Low-Side N-Channel Controller for Switching Regulators

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