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MAX1864UEEE中文资料PDF规格书
MAX1864UEEE规格书详情
General Description
The MAX1864/MAX1865 power-supply controllers are designed to address cost-conscious applications such as cable modem Consumer Premise Equipment (CPE), xDSL CPE, and set-top boxes. Operating off a low-cost, unregulated DC supply (such as a wall adapter output), the MAX1864 generates three positive outputs, and the MAX1865 generates four positive outputs and one negative output to provide a cost-effective system power supply.
The MAX1864 includes a current-mode synchronous step-down controller and two positive regulator gain blocks. The MAX1865 has one additional positive gain block and one negative regulator gain block. The main synchronous step-down controller generates a high-current output that is preset to 3.3V or adjustable from 1.236V to 0.8 ✕ VIN with an external resistive divider. The 100kHz/200kHz operating frequency allows the use of low-cost aluminum-electrolytic capacitors and low-cost power magnetics. Additionally, the MAX1864/MAX1865 step-down controllers sense the voltage across the low-side MOSFET’s on-resistance to efficiently provide the current-limit signal, eliminating the need for costly current-sense resistors.
Features
♦ 4.5V to 28V Input Voltage Range
♦ Master DC-DC Step-Down Converter
Preset 3.3V or Adjustable (1.236V to 0.8 ✕ VIN)
Output Voltage
Fixed-Frequency (100kHz/200kHz) PWM
Controller
No Current-Sense Resistor
Adjustable Current Limit
95 Efficient
♦ Two (MAX1864)/Four (MAX1865) Analog Gain Blocks
Positive Analog Blocks Drive Low-Cost PNP
Pass Transistors to Build Positive Linear
Regulators
Negative Analog Block (MAX1865) Drives a
Low-Cost NPN Pass Transistor to Build a
Negative Linear Regulator
♦ Power-Good Indicator
♦ Soft-Start Ramp for All Positive Regulators
Applications
xDSL, Cable, and ISDN Modems
Set-Top Boxes
Wireless Local Loop
产品属性
- 型号:
MAX1864UEEE
- 功能描述:
电流和电力监控器、调节器
- RoHS:
否
- 制造商:
STMicroelectronics
- 产品:
Current Regulators
- 电源电压-最大:
48 V
- 电源电压-最小:
5.5 V
- 工作温度范围:
- 40 C to + 150 C
- 安装风格:
SMD/SMT
- 封装/箱体:
HPSO-8
- 封装:
Reel
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
MAXIM-美信 |
24+25+/26+27+ |
QSOP-20 |
6328 |
一一有问必回一特殊渠道一有长期订货一备货HK仓库 |
询价 | ||
MAX |
22+ |
SSOP |
8200 |
原装现货库存.价格优势 |
询价 | ||
MAXIM |
22+ |
6980 |
原装现货,可开13%税票 |
询价 | |||
ADI(亚德诺)/MAXIM(美信) |
23+ |
7350 |
原装进口,原厂直销!当天可交货,支持原型号开票! |
询价 | |||
Maxim |
22+ |
20QSOP |
9000 |
原厂渠道,现货配单 |
询价 | ||
Maxim |
23+ |
20QSOP |
4994 |
原装现货 |
询价 | ||
MAXIM/美信 |
22+ |
MSOP10 |
9600 |
原装现货,优势供应,支持实单! |
询价 | ||
Analog Devices Inc./Maxim Inte |
24+ |
20-SSOP(0.154,3.90mm 宽) |
9350 |
独立分销商,公司只做原装,诚心经营,免费试样正品保证 |
询价 | ||
Maxim Integrated |
22+ |
NA |
500000 |
万三科技,秉承原装,购芯无忧 |
询价 | ||
Maxim |
/ |
NA |
610 |
代理渠道.实单必成 |
询价 |