MAX649EPA中文资料PDF规格书
MAX649EPA规格书详情
General Description
The MAX649/MAX651/MAX652 BiCMOS, step-down DC-DC switching controllers provide high efficiency over three decades of load current. A unique, current-limited pulse-frequency-modulated (PFM) control scheme gives these devices the benefits of pulse-width-modulation (PWM) converters (high efficiency at heavy loads), while using only 100µA of supply current (vs. 2mA to 10mA for PWM converters). The result is high efficiency over loads ranging from 10mA to more than 2.5A.
These devices use miniature external components. Their high switching frequency (up to 300kHz) allows for less than 9mm diameter surface-mount inductors.
The MAX649/MAX651/MAX652 have dropout voltages less than 1V and accept input voltages up to 16.5V. Output voltages are preset at 5V (MAX649), 3.3V (MAX651), and 3V (MAX652). These controllers can also be adjusted to any voltage from 1.5V to the input voltage by using two resistors.
These step-down controllers drive external P-channel MOSFETs at loads greater than 10W. If less power is required, use the MAX639/MAX640/MAX653 step-down converters with on-chip FETs, which allow up to a 225mA load current.
Features
♦ More than 90 Efficiency (10mA to 1.5A Loads)
♦ More than 12.5W Output Power
♦ 100µA Max Quiescent Supply Current
♦ 5µA Max Shutdown Supply Current
♦ Less than 1.0V Dropout Voltage
♦ 16.5V Max Input Voltage
♦ 5V (MAX649), 3.3V (MAX651), 3V (MAX652), or Adjustable Output Voltage
♦ Current-Limited Control Scheme
♦ Up to 300kHz Switching Frequency
Applications
5V-to-3.3V Green PC Applications
High-Efficiency Step-Down Regulation
Minimum-Component DC-DC Converters
Battery-Powered Applications
产品属性
- 型号:
MAX649EPA
- 功能描述:
DC/DC 开关控制器
- RoHS:
否
- 制造商:
Texas Instruments
- 输入电压:
6 V to 100 V
- 输出电压:
1.215 V to 80 V
- 输出电流:
3.5 A
- 输出端数量:
1
- 最大工作温度:
+ 125 C
- 封装/箱体:
CPAK
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
MAXIM |
2016+ |
SOP8 |
2974 |
只做原装,假一罚十,公司可开17%增值税发票! |
询价 | ||
MAX |
22+ |
原装 |
6980 |
原装现货,可开13%税票 |
询价 | ||
1525+ |
30000 |
绝对原装进口现货可开17%增值税发票 |
询价 | ||||
MAXIM/美信 |
2046+ |
9852 |
只做原装正品现货!或订货假一赔十! |
询价 | |||
Maxim |
21+ |
25000 |
原厂原包 深圳现货 主打品牌 假一赔百 可开票! |
询价 | |||
MAXIM |
2020+ |
原厂封装 |
35000 |
100%进口原装正品公司现货库存 |
询价 | ||
MAXIM/美信 |
22+ |
38343 |
郑重承诺只做原装进口现货 |
询价 | |||
MAXIM/美信 |
24+23+ |
SOP8 |
12580 |
16年电子元件现货供应商 终端BOM表可配单提供样品 |
询价 | ||
MAXIM |
23+ |
SMD |
4500 |
全新原装、诚信经营、公司现货销售! |
询价 | ||
MAXIM |
2023+ |
80000 |
一级代理/分销渠道价格优势 十年芯程一路只做原装正品 |
询价 |