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RT8228AZQW中文資料
RT8228AZQW數(shù)據(jù)手冊規(guī)格書PDF詳情
General Description
The RT8228A PWM controller provides high efficiency,
excellent transient response, and high DC output accuracy
needed for stepping down high voltage batteries to
generate low voltage CPU core, I/O, and chipset RAM
supplies in notebook computers.
The constant on-time PWM control scheme handles wide
input/output voltage ratios with ease and provides 100ns
“instant-on” response to load transients while maintaining
a relatively constant switching frequency.
The RT8228A achieves high efficiency at a reduced cost
by eliminating the current sense resistor found in
traditional current mode PWMs. Efficiency is further
enhanced by its ability to drive very large synchronous
rectifier MOSFETs and enter diode emulation mode at
light load condition. The buck conversion allows this device
to directly step down high voltage batteries at the highest
possible efficiency. The Audio Skipping Mode (ASM)
setting maintains the switching frequency above 25kHz,
which eliminates noise in audio applications. The RT8228A
is intended for CPU core, chipset, DRAM, or other low
voltage supplies as low as 0.5V. The RT8228A is available
in a WQFN-12L 2x2 package.
Applications
? Notebook Computers
? CPU Core Supply
? Chipset/RAM Supply as Low as 0.5V
? Generic DC/DC Power Regulator
Features
? Built in 1 0.5V Reference Voltage
? Adjustable 0.5V to 3.3V Output Range
? Quick Load Step Response within 100ns
? 4700ppm/°C Programmable Current Limit by Low
Side RDS(ON) Sensing
? 4.5V to 26V Battery Input Range
? Resistor Programmable Frequency
? Internal Ramp Current Limit Soft-Start Control
? Drives Large Synchronous Rectifier FETs
? Integrated Boost Switch
? Over/Under Voltage Protection
? Thermal Shutdown
? Power Good Indicator
? RoHS Compliant and Halogen Free
RT8228AZQW產(chǎn)品屬性
- 類型
描述
- 型號
RT8228AZQW
- 功能描述
IC REG CTRLR BUCK PWM 12WQFN
- RoHS
是
- 類別
集成電路(IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器
- 系列
-
- 標(biāo)準(zhǔn)包裝
2,000
- 系列
- PWM
- 型
電流模式
- 輸出數(shù)
1 頻率 -
- 最大
1MHz
- 占空比
50%
- 電源電壓
9 V ~ 10 V
- 降壓
無
- 升壓
是
- 回掃
是
- 反相
無
- 倍增器
無
- 除法器
無
- Cuk
無
- 隔離
無
- 工作溫度
-40°C ~ 85°C
- 封裝/外殼
8-TSSOP(0.173,4.40mm 寬)
- 包裝
帶卷(TR)
供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
---|---|---|---|---|---|---|---|
Richtek |
22+ |
12-WFQFN |
2100 |
||||
RICHTEK |
24+ |
WQFN-12 |
7850 |
只做原裝正品現(xiàn)貨或訂貨假一賠十! |
|||
RICHTEK/立锜 |
23+ |
WQFN-12L |
74148 |
專營Richtek18年原裝正品特價供應(yīng) |
|||
RICHTEK |
24+ |
DFN |
65200 |
一級代理/放心采購 |
|||
RICHTEK |
20+ |
QFN-12 |
1001 |
就找我吧!--邀您體驗愉快問購元件! |
|||
RICHTEK |
23+ |
WQFN-12L |
12800 |
##公司主營品牌長期供應(yīng)100%原裝現(xiàn)貨可含稅提供技術(shù) |
|||
RICHTEK |
23+ |
WQFN-12 |
2606 |
原廠原裝正品 |
|||
RICHTEK |
24+ |
WQFN-12L |
4905 |
只做原裝正品現(xiàn)貨 歡迎來電查詢15919825718 |
|||
RICHTEK |
24+ |
WQFN-12L |
12000 |
原裝正品 假一罰十 可拆樣 |
|||
RICHTEK |
23+ |
WQFN-12L |
2759 |
全新原裝正品現(xiàn)貨,支持訂貨 |
RT8228AZQW 資料下載更多...
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Datasheet數(shù)據(jù)表PDF頁碼索引
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Richtek Technology Corporation 立锜科技股份有限公司
立锜科技(Richtek Technology Corporation)是一間國際級的模擬IC設(shè)計公司,專注于提供客戶多元且具競爭力的產(chǎn)品以及完整的電源管理解決方案。自成立以來,立锜專注于整合技術(shù)能力、堅持質(zhì)量和積極的客戶服務(wù),以提供客戶產(chǎn)品價值為宗旨,產(chǎn)品廣泛應(yīng)用于電腦、消費(fèi)性終端產(chǎn)品、網(wǎng)絡(luò)通訊裝置、大尺寸面板顯示器等領(lǐng)域。立锜成立于1998年,總公司設(shè)立于臺灣新竹,并且在亞洲、美國和歐洲各地設(shè)有服務(wù)據(jù)點。 公司的愿景是提供客戶完整的電源管理解決方案,以降低成本,提升競爭力;屹立在電源管理的領(lǐng)域里,無論是技術(shù)、質(zhì)量、成本、服務(wù)及市場占有率上,均具有領(lǐng)導(dǎo)地位;同時,立锜致力于建立電源管理頂尖專