A7442中文資料創(chuàng)瑞科技數(shù)據(jù)手冊PDF規(guī)格書
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DESCRIPTION
A7442 is a High Efficiency Synchronous DC-DC Buck Converters with CV / CC modes, which can output up to 4.2 A in a wide input range from 6 V to 36 V. The A7442 operates either in CV (Constant Voltage) mode or CC (Constant Current) mode. With the CV / CC mode, adjustable current limit and output voltage, the A7442 is particularly suitable for QC 2.0 / 3.0 (12V / 1.5A, 9V / 2A and 5V / 3A), Type-C PD (5 V / 3 A) and Apple portable device (5V / 2.4A) applications. The output voltage and CC limit can be programed through the FB, CSP and CSN pins respectively.
In order to achieve better EMI performance and comply with Apple’s MFi standard, the switching frequency was fixed at 130kHz. A7442 is capable to operate in CC mode down to 3V output voltage to protect the soft-short condition that is from the over current of the portable device
A discharge circuitry is integrated to quickly and reliably discharge output capacitors to avoid the faulty voltage delivery in case of output over voltage and ensure safe operation for QC 2.0 / 3.0 application. The hiccup mode output Under Voltage Protection(UVP) can reduce the average input current to 50mA. Features such as output cord voltage drop compensation and low voltage drop operation is especially suitable for car charger.
The A7442 is available in PSOP8 package.
FEATURES
? Wide Inpu t Supply Voltage Range of 6 V ~ 40V
? Up to 4.2 A Output Current
? Up to 95 Efficiency
? 130 kHz Fixed Switching Frequency
? Internal Soft start Circuitry
? Compensation for Output Cord Voltage Drop
? Input Under Voltage Lockout
? Input Over Voltage Protection
? Adjustabl e Constant Current Limit
? Output Over Voltage Protection
? Output Auto Discharge
? Cycle by Cycle Peak Current Limit
? Hiccup Mode Output UVP for Soft short 3 V
? Thermal Shutdown
? Available in PSOP8 p ackage
APPLICATION
? Car Charger
? Portable Charging Devices
? CV / CC regulation DC / DC converter
供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
---|---|---|---|---|---|---|---|
HARRIS |
2023+ |
CDIP |
80000 |
一級代理/分銷渠道價格優(yōu)勢 十年芯程一路只做原裝正品 |
詢價 | ||
NEXPERIA/安世 |
23+ |
NA/ |
28250 |
原裝現(xiàn)貨,當(dāng)天可交貨,原型號開票 |
詢價 | ||
QFN |
5000 |
詢價 | |||||
AiT Semiconductor Inc |
22+ |
NA |
500000 |
萬三科技,秉承原裝,購芯無憂 |
詢價 | ||
MACOM Technology Solutions |
24+ |
TO-8 形式 4 引線 |
9350 |
獨立分銷商 公司只做原裝 誠心經(jīng)營 免費試樣正品保證 |
詢價 | ||
MOLEX/莫仕 |
2420+ |
/ |
596542 |
一級代理,原裝正品! |
詢價 | ||
AIT |
23+ |
PSOP8 |
3000 |
一級代理原廠VIP渠道,專注軍工、汽車、醫(yī)療、工業(yè)、 |
詢價 | ||
XX |
20+ |
SMD |
32970 |
原裝優(yōu)勢主營型號-可開原型號增稅票 |
詢價 | ||
24+ |
N/A |
69000 |
一級代理-主營優(yōu)勢-實惠價格-不悔選擇 |
詢價 | |||
AIT |
23+ |
SMD |
6000 |
只有原裝正品,老板發(fā)話合適就出 |
詢價 |