Datasheet > SE2490-LF

SE2490-LF

更新时间： 2024-11-25 01:23:39

品牌	Logo	应用领域
思旺 - SEAWARD		/
页数	文件大小	规格书
11页	1046K
描述
2.8Aï¼Wide-Input Sensorless CC/CV Step-Down DC/DC Converter

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SE2490-LF 数据手册

SE2490

2.8A，Wide-Input Sensorless CC/CV Step-Down

DC/DC Converter

Description

Features



Input Voltage：8V to 36V

SE2490 is a wide input voltage, high efficiency

Vout Accuracy (V_FB=1V) ±2%

CC/CV mode(Constant Current and Constant

Voltage)

Active CC step-down DC/DC converter that operates

in either CV (Constant Output Voltage) mode or CC

(Constant Output Current) mode.



Up to 2.8A output current

SE2490 consists of step-down switching

regulator with PWM control. The device includes a

reference voltage source, oscillation circuit, error

amplifier and etc.

±3%/±5%/15%Current limit Accuracy

Duty ratio：0% to 90% PWM control

Oscillation frequency：250KHz

Thermal Shutdown function.

SE2490 provides low-ripple power, high

efficiency, and excellent transient characteristics. The

PWM control circuit is able to the duty ratio linearly

forms 0 up to 90%. An over current protection function

is built outside that it can set by a resistance. An

external compensation is easily to system stable; the

low ESR output capacitor can be used.

Short Circuit Protect (SCP).

Built-in internal LX N-channel MOS.

Current mode non-synchronous PWM converter

External current limit setting.

Over Voltage Protection5.8V.

Built in adjustable line-compensation.

PSOP-8 Pb-Free package

With the addition of an internal N-channel Power

MOS, a coil, capacitors, and a diode connected

externally, these ICs can function as step-down

switching regulators. They serve as ideal power

supply units for portable devices when coupled with

the PSOP-8 packages, providing such outstanding

features as low current consumption. Since this

converter can accommodate an input voltage up to

36V.

Application



Car charger



Portable charger Device.

Typical Application

Rev1.0

Preliminary and all contents are subject to change without prior notice

12 3 4 5 6 7...11

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