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MAX748AC/D中文资料PDF规格书
MAX748AC/D规格书详情
General Description
The MAX748A/MAX763A are 3.3V-output CMOS, step down switching regulators. The MAX748A accepts inputs from 3.3V to 16V and delivers up to 500mA. The MAX763A accepts inputs between 3.3V and 11V and delivers up to 500mA. Typical efficiencies are 85 to 90. Quiescent supply current is 1.4mA (MAX763A), and only 0.2µA in shutdown.
Pulse-width-modulation (PWM) current-mode control provides precise output regulation and excellent transient responses. Output voltage accuracy is guaranteed to be ±5 over line, load, and temperature variations. Fixed-frequency switching allows easy filtering of output ripple and noise, as well as the use of small external components. A 22µH inductor works in most applications, so no magnetics design is necessary.
The MAX748A/MAX763A also feature cycle-by-cycle current limiting, overcurrent limiting, undervoltage lockout, and programmable soft-start protection. The MAX748A is available in 8-pin DIP and 16-pin wide SO packages; the MAX763A comes in 8-pin DIP and SO packages.
Features
♦ Up to 500mA Load Currents
♦ Guaranteed 159kHz to 219.5kHz Current-Mode PWM
♦ 85 to 90 Efficiencies
♦ 1.7mA Quiescent Current (MAX748A)
1.4mA Quiescent Current (MAX763A)
♦ 0.2µA Shutdown Supply Current
♦ 22µH Preselected Inductor Value;
No Component Design Required
♦ Overcurrent, Soft-Start, and Undervoltage
Lockout Protection
♦ Cycle-by-Cycle Current Limiting
♦ 8-Pin DIP/SO Packages (MAX763A)
Applications
5V-to-3.3V Converters
Cellular Phones
Portable Instruments
Hand-Held Computers
Computer Peripherals
产品属性
- 型号:
MAX748AC/D
- 功能描述:
直流/直流开关转换器 1.7mA Quiescent Current-Mode PWM DC-DC Converter
- RoHS:
否
- 制造商:
STMicroelectronics
- 最大输入电压:
4.5 V
- 开关频率:
1.5 MHz
- 输出电压:
4.6 V
- 输出电流:
250 mA
- 输出端数量:
2
- 最大工作温度:
+ 85 C
- 安装风格:
SMD/SMT
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
MAXIM |
22+ |
DIP8 |
8200 |
原装现货库存.价格优势!! |
询价 | ||
MAX |
05+ |
原厂原装 |
96 |
只做全新原装真实现货供应 |
询价 | ||
MAXIM |
30444+ |
9750 |
进品原装正品 现货库存带17%增值发票 |
询价 | |||
MAXIM |
23+ |
DIP-8 |
3200 |
全新原装、诚信经营、公司现货销售! |
询价 | ||
MAXIM/美信 |
22+/23+ |
9800 |
原装进口公司现货假一赔百 |
询价 | |||
Maxim(美信) |
2021/2022+ |
标准封装 |
6000 |
原厂原装现货订货价格优势终端BOM表可配单提供样品 |
询价 | ||
9341 |
127 |
公司优势库存 热卖中! |
询价 | ||||
Maxim(美信) |
23+ |
标准封装 |
6000 |
原厂原装现货订货价格优势终端BOM表可配单提供样品 |
询价 | ||
MAXIM/美信 |
22+ |
DIP8 |
50000 |
只做原装正品,假一罚十,欢迎咨询 |
询价 | ||
max |
dc96 |
原厂封装 |
98 |
INSTOCK:50/tube/dip8 |
询价 |