Datasheet > LM5015

LM5015

更新时间： 2024-11-16 04:20:07

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
24页	388K
描述
High Voltage Monolithic Two-Switch Forward DC-DC Regulator

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LM5015 数据手册

December 10, 2007

LM5015

High Voltage Monolithic Two-Switch Forward DC-DC

Regulator

General Description

Features

The LM5015 high voltage switch mode regulator features all

the functions necessary to implement efficient high voltage

Two-Switch Forward and Two-Switch Flyback regulators, us-

ing a minimum of external components. This easy to use

regulator integrates high side and low side 75 Volt N-Channel

MOSFETs with a minimum 1 Amp peak current limit. The

voltage across the MOSFETs employed in the two-switch

topology is clamped to the input voltage, allowing the input

voltage range to approach the rating of the MOSFETs. The

regulator control method is based on current mode control

providing inherent ease of loop compensation and line feed-

forward for superior rejection of input transients.

Dual Integrated 75V N-Channel MOSFETs

■

Ultra-wide input voltage range: 4.25V to 75V

Integrated high voltage bias regulator

Adjustable output voltage

1.5% feedback reference accuracy

Current mode control with selectable compensation

Wide bandwidth error amplifier

Integrated current sensing and limiting

50% maximum duty cycle limit

Single resistor oscillator programming

The operating frequency is set with a single resistor and is

programmable up to 750 kHz. The oscillator can also be syn-

chronized to an external clock. Additional protection features

include cycle-by-cycle current limiting, thermal shutdown, un-

der-voltage lockout and remote shutdown capability. The de-

vice is available in the TSSOP-14EP package featuring an

exposed die attach pad to enhance thermal dissipation.

Oscillator synchronization capability

Programmable soft-start

Enable / Under-voltage Lockout (UVLO) pin

Thermal shutdown

Package

TSSOP-14EP (Exposed Pad)

■

Typical Application Schematic

30034601

300346

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