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

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) | |
更新時(shí)間 | 2025-7-10 20:00:00 |
人工找貨 | RT8249C價(jià)格和庫(kù)存,歡迎聯(lián)系客服免費(fèi)人工找貨 |
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更多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) |