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MAX1951EVKIT

更新时间： 2024-10-02 23:45:55
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Evaluation Kit for the MAX1951/MAX1952

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MAX1951EVKIT 数据手册

 浏览型号MAX1951EVKIT的Datasheet PDF文件第2页浏览型号MAX1951EVKIT的Datasheet PDF文件第3页 
19-2684; Rev 0; 12/02  
MAX1951 Evaluation Kit  
General Description  
Features  
o 2.6V to 5.5V Input Range  
The MAX1951 evaluation kit (EV kit) provides a 1.5V output  
voltage from a 2.6V to 5.5V input source.The output  
o Output Voltage  
voltage can be adjusted from 0.8V to V . The MAX1951  
IN  
Adjustable 0.8V to V (MAX1951)  
IN  
Fixed 1.8V (MAX1952)  
delivers up to 1.5A output current. The MAX1951 is a  
fixed-frequency, pulse-width modulated (PWM) step-down  
switching regulator with internal synchronous-rectifier.  
Operation at 1MHz minimizes external components.  
o 1.5A Output Current  
2
o Tiny Circuit Footprint: 0.55 ✕ 0.7in  
The MAX1951 EV kit can also be used to evaluate other  
output voltages by changing the feedback resistors R2  
and R3. The EV kit can also be used to evaluate the  
MAX1952, which is a 1.5A PWM step-down switching  
regulator with a 1.8V fixed output voltage.  
o Low-Profile Components: < 3mm  
o All Ceramic Design  
o Fixed 1MHz Switching Frequency  
o No External Schottky Diode Required  
o Surface-Mount Construction  
o Fully Assembled and Tested  
Component List  
DESIGNATION QTY  
DESCRIPTION  
10µF 20%, 6.3V X5R ceramic  
capacitors (1206)  
Taiyo Yuden JMK316BJ106ML or  
TDK C3216X5R0J106MT  
C1, C5  
C2  
2
1
Ordering Information  
220pF 10%, 50V X7R ceramic  
capacitor (0603)  
Murata GRM39X7R221K050AD or  
Taiyo Yuden UMK107CH221KZ  
PART  
TEMP RANGE  
IC PACKAGE  
MAX1951EVKIT  
0°C to +85°C  
8 SO  
Note: To evaluate MAX1952ESA, request an MAX1952ESA-18  
free sample with the MAX1951EVKIT.  
0.1µF 20%, 16V X7R ceramic  
capacitors (0603)  
C3, C4  
2
Taiyo Yuden EMK107BJ104MA or  
TDK C1608X7R1C104K or  
Murata GRM 39X7R104K016AD  
Quick Start  
The MAX1951 EV kit is a fully assembled and tested  
surface-mount board. Follow the steps below to verify  
board operation. Do not turn on the power supply  
until all connections are completed.  
C6  
D1  
0
0
1
Not installed, capacitor (1206)  
Not installed, Schottky diode  
JU1  
2-pin header  
1) Verify that there is no shunt (open) across JU1  
(shutdown disabled).  
2µH, 2A inductor  
Toko A915AY-2R0M or  
1.8µH, 2A inductor  
L1  
1
2) Connect a voltmeter and load (if any) to the VOUT  
pad. Connect the ground to the GND closest to  
VOUT.  
Sumida CDRH4D28-1R8  
NPN bipolar transistor SOT23  
Fairchild MMBT3904 or  
Zetex FMMT413  
3) Connect a 2.6V to 5.5V power supply to the VIN  
pad. Connect the power-supply ground to the  
GND pad closest to VIN.  
Q1  
1
R1  
R2  
1
1
1
1
1
1
1
1
51.1kΩ 1% resistor (0603)  
15kΩ 1% resistor (0603)  
13kΩ 1% resistor (0603)  
10Ω 5% resistor (0603)  
10kΩ 5% resistor (0603)  
MAX1951ESA 8-lead SO  
Shunt  
4) Turn on the power supply and verify that the output  
voltage is 1.5V.  
R3  
To evaluate other output voltages with the MAX1951, see  
the Evaluating Other Output Voltages section. To evaluate  
the MAX1952, see the Evaluating the MAX1952 section.  
R4  
R5  
U1  
None  
None  
MAX1951 PC board  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
123

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MAX1952ESA+ MAXIM

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 		1MHz, All-Ceramic, 2.6V to 5.5V Input, 2A PWM Step-Down DC-to-DC Regulators
MAX1952ESA+T MAXIM

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MAX1952ESA-T MAXIM

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