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RT8249C中文資料立锜科技數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

RT8249C
廠(chǎng)商型號(hào)

RT8249C

功能描述

Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs

文件大小

295.55 Kbytes

頁(yè)面數(shù)量

23 頁(yè)

生產(chǎn)廠(chǎng)商 Richtek Technology Corporation
企業(yè)簡(jiǎn)稱(chēng)

RICHTEK立锜科技

中文名稱(chēng)

立锜科技股份有限公司官網(wǎng)

原廠(chǎng)標(biāo)識(shí)
數(shù)據(jù)手冊(cè)

下載地址一下載地址二到原廠(chǎng)下載

更新時(shí)間

2025-7-10 20:00:00

人工找貨

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RT8249C規(guī)格書(shū)詳情

General Description

The RT8249A/B/C is a dual-channel step-down, controller

generating supply voltages for battery-powered systems.

It includes two Pulse-Width Modulation (PWM) controllers

adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear

regulators. Each linear regulator provides up to 100mA

output current and 3.3V linear regulator provides 1

accuracy under 35mA. The RT8249A/B has an oscillator

output to driver the external charge pump application. The

RT8249C provides a mode selection pin, SKIPSEL, to

select Diode-Emulation Mode (DEM) or Audio Skipping

Mode (ASM). Other features include on-board power-up

sequencing, a power-good output, internal soft-start, and

soft-discharge output that prevents negative voltage during

shutdown.

A constant current ripple PWM control scheme operates

without sense resistors and provides 100ns response to

load transient. For maximizing power efficiency, the

RT8249A/B/C automatically switches to the diodeemulation

mode in light load applications. The RT8249A/

B/C is available in the WQFN-20L 3x3 package.

Features

? Support Connected Standby Mode for Ultrabook

? CCRCOT Control with 100ns Load Step Response

? PWM Maximum Duty Ratio > 98

? 5V to 25V Input Voltage Range

? 2V to 5.5V Output Voltage Range

? 5V/3.3V LDOs with 100mA Output Current

? 1 Accuracy on 3.3V LDO Output

? Oscillator Driving Output for Charge Pump

Application

? Internal Frequency Setting

? RT8249A/B : 400kHz/475kHz (CH1/CH2)

? RT8249C : 500kHz/600kHz (CH1/CH2)

? Internal Soft-Start and Soft-Discharge

? 4700ppm/°C RDS(ON) Current Sensing

? Independent Switcher Enable Control

? Built in OVP/UVP/OCP/OTP

? Non-latch UVLO

? Power Good Indicator

? 20-Lead WQFN Package

? RoHS Compliant and Halogen Free

供應(yīng)商 型號(hào) 品牌 批號(hào) 封裝 庫(kù)存 備注 價(jià)格
RICHTEK(臺(tái)灣立锜)
24+
NA/
8735
原廠(chǎng)直銷(xiāo),現(xiàn)貨供應(yīng),賬期支持!
詢(xún)價(jià)
RICHTEK(臺(tái)灣立锜)
23+
NA
6800
原裝正品,力挺實(shí)單
詢(xún)價(jià)
Richtek
2018+
SOP
6528
承若只做進(jìn)口原裝正品假一賠十!
詢(xún)價(jià)
RICHTEK
24+
SOP8
25000
一級(jí)專(zhuān)營(yíng)品牌全新原裝熱賣(mài)
詢(xún)價(jià)
RICHTEK/立锜
21+
SOP
1062
只做原裝正品,不止網(wǎng)上數(shù)量,歡迎電話(huà)微信查詢(xún)!
詢(xún)價(jià)
Richtek(立崎)
23+
NA
26094
10年以上分銷(xiāo)經(jīng)驗(yàn)原裝進(jìn)口正品,做服務(wù)型企業(yè)
詢(xún)價(jià)
RICHTEK/立锜
23+
SO-8
25000
代理原裝現(xiàn)貨,假一賠十
詢(xún)價(jià)
RICHTEK/立錡
22+
QFN
12245
現(xiàn)貨,原廠(chǎng)原裝假一罰十!
詢(xún)價(jià)
RICHTEK/立锜
21+
SOP-8
5000
百域芯優(yōu)勢(shì) 實(shí)單必成 可開(kāi)13點(diǎn)增值稅
詢(xún)價(jià)
RICHTEK
2011+
SOP-8
6000
絕對(duì)原裝自己現(xiàn)貨
詢(xún)價(jià)