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数量 | 价钱 (含税) |
---|---|
1+ | CNY63.100 (CNY71.303) |
10+ | CNY49.340 (CNY55.7542) |
50+ | CNY47.750 (CNY53.9575) |
100+ | CNY46.960 (CNY53.0648) |
250+ | CNY46.160 (CNY52.1608) |
500+ | CNY45.370 (CNY51.2681) |
1000+ | CNY44.570 (CNY50.3641) |
产品信息
产品概述
The MAX1774EEI+ is a dual high efficiency, step-down converter with backup battery switchover in 28 pin QSOP package. It integrates two high efficiency step-down converters, a boost converter for backup battery regulation and four voltage detectors. It provides an adjustable main output from 1.25V to 5.5V at over 2A. The secondary core converter delivers an adjustable voltage from 1V to 5V and can deliver up to 1.5A. Both main and core regulators have separate shutdown inputs. When the AC adapter power is removed, an external P channel MOSFET switches input to main battery. When main battery is low, the backup step-up converter sustains main output voltage. When backup battery can no longer deliver required load, system shuts down safely to prevent damage. Four onboard voltage detectors monitor status of the AC adapter power, main battery and backup battery. It is used in internet access tablets, POS terminals, subnotebooks and PDAs.
- Input voltage range from +2.7V to +28V
- Operating temperature range from -40°C to 85°C
- Main power, adjustable from +1.25V to +5.5V, over 2A load current & up to 95% efficiency
- Core power, adjustable from 1V to 5V, internal switches & up to 91% efficiency
- Automatic main battery switchover, 100% (max) duty cycle
- Up to 1.25MHz switching frequency
- Quiescent current is 170µA
- Shutdown current is 8µA
- Digital soft start
- Independent shutdown inputs
警告
Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.
注释
ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party
技术规格
2输出
2输出
2.7V
2A
QSOP
28引脚
5V
-
5.5V
95%
85°C
-
No SVHC (21-Jan-2025)
1.25MHz
可调
降压
28V
2A
1.5A
5.5V
表面安装
1.25V
1.25MHz
-40°C
-
MSL 1 -无限制
QSOP
技术文档 (1)
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法律与环境
进行最后一道重要生产流程所在的地区原产地:Thailand
进行最后一道重要生产流程所在的地区
RoHS
RoHS
产品合规证书