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| 型号： | MAX1951ESA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 2A 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 5.5 V |
| 输入电压： | 2.6 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
19-2622; Rev 2; 6/09
1MHz, All-Ceramic, 2.6V to 5.5V Input,
2A PWM Step-Down DC-to-DC Regulators
General Description
The MAX1951/MAX1952 high-efficiency, DC-to-DC
step-down switching regulators deliver up to 2A of out-
put current. The devices operate from an input voltage
range of 2.6V to 5.5V and provide an output voltage
from 0.8V to V IN , making the MAX1951/MAX1952 ideal
for on-board postregulation applications. The MAX1951
total output error is less than 1% over load, line, and
temperature.
The MAX1951/MAX1952 operate at a fixed frequency of
1MHz with an efficiency of up to 94%. The high operating
frequency minimizes the size of external components.
Internal soft-start control circuitry reduces inrush current.
Short-circuit and thermal-overload protection improve
design reliability.
The MAX1951 provides an adjustable output from 0.8V
to V IN , whereas the MAX1952 has a preset output of
1.8V. Both devices are available in a space-saving 8-pin
SO package.
Applications
ASIC/DSP/μP/FPGA Core and I/O Voltages
Features
? Compact 0.385in 2 Circuit Footprint
? 10μF Ceramic Input and Output Capacitors, 2μH
Inductor for 1.5A Output
? Efficiency Up to 94%
? 1% Output Accuracy Over Load, Line, and
Temperature (MAX1951, Up to 1.5A)
? Guaranteed 2A Output Current
? Operate from 2.6V to 5.5V Supply
? Adjustable Output from 0.8V to V IN (MAX1951)
? Preset Output of 1.8V (1.5% Accuracy) (MAX1952)
? Internal Digital Soft-Soft
? Short-Circuit and Thermal-Overload Protection
Ordering Information/
Selector Guide
Set-Top Boxes
Cellular Base Stations
PART
TEMP RANGE
PIN-
PACKAGE
OUTPUT
Networking and Telecommunications
MAX1951 ESA+ -40 ° C to +85 ° C 8 SO
MAX1952 ESA+ -40 ° C to +85 ° C 8 SO
Adj 0.8V to V IN
Fixed 1.8V
+ Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configuration
Typical Operating Circuit
TOP VIEW
INPUT
2.6V TO 5.5V
IN
LX
OUTPUT
0.8V TO V IN , UP TO 2A
V CC
1
8
IN
MAX1951
V CC
FB
REF
2
7
LX
MAX1951
GND
3
MAX1952
6
PGND
COMP
REF
FB 4
5
COMP
OFF
PGND
GND
ON
SO
OPTIONAL
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1951ESA-TG05 | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1951EVKIT | 功能描述:直流/直流开关调节器 Evaluation Kit for the MAX1951 MAX1952 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX19526EVKIT+ | 制造商:Maxim Integrated Products 功能描述:ANALOG TO DIGITAL CONVERTER - Boxed Product (Development Kits) |
| MAX19526EXE+ | 功能描述:模数转换器 - ADC Integrated Circuits (ICs) Analog to Digital Converters - IC ADC 12BIT 8CH 40MSPS 144CTBGA RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX19526EXE+T | 功能描述:模数转换器 - ADC Integrated Circuits (ICs) Analog to Digital Converters - IC ADC 12BIT 8CH 40MSPS 144CTBGA RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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