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MAX1747EVKIT

更新时间： 2024-11-13 23:45:51
品牌 Logo 应用领域
美信 - MAXIM /
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5页 138K
描述
Evaluation Kit for the MAX1747

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MAX1747EVKIT 数据手册

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19-1871; Rev 0; 12/00  
MAX1747 Evaluation Kit  
General Description  
Features  
The MAX1747 evaluation kit (EV kit) is a fully assembled  
and tested surface-mount circuit board that contains  
three charge-pump regulators. The first one is a high-  
current step-up DC-DC converter and is configured for  
a +5V output that provides up to 200mA of current. The  
other two charge pumps are low-current charge pumps  
that generate positive and negative voltages. A +3.0VDC  
to +3.6VDC source can be utilized to power the EV kit  
input.  
ꢀ Low-Profile Solution, 1.1mm max Height  
ꢀ Three Charge-Pump Regulators  
+5V Output at 200mA  
+12V Output at 20mA  
-7V Output at 20mA  
ꢀ High-Current Output Regulated to 1ꢀ  
ꢀ Adjustable Outputs  
The low-current negative charge-pump circuit is config-  
ured for a -7V output; the low-current positive charge-  
pump circuit is configured for a +12V output. Both cir-  
cuits provide up to 20mA of current. The high-current  
step-up DC-DC converter or the EV kit’s input source  
can be used to power either or both charge pumps.  
ꢀ Integrated Power MOSFETs  
ꢀ 1µA Shutdown Current  
ꢀ Switching Frequency Up to 1.23MHz  
ꢀ Fast Transient Response  
ꢀ Surface-Mount Components  
ꢀ Fully Assembled and Tested  
The MAX1747 EV kit demonstrates an inductorless and  
low profile (1.1mm max) solution. Operation up to  
1.23MHz allows the use of tiny surface-mount compo-  
nents and provides fast transient response.  
Ordering Information  
PART  
TEMP.RANGE  
IC PACKAGE  
MAX1747EVKIT  
0°C to +70°C  
20 TSSOP  
Component List  
DESIGNATION  
QTY  
DESCRIPTION  
DESIGNATION  
QTY  
DESCRIPTION  
200mA, 25V Schottky diodes  
(SOT23)  
Fairchild BAT54S  
4.7µF, 6.3V X7R ceramic  
capacitors (1210)  
Taiyo Yuden LMK325BJ475MD  
C1, C2, C3,  
C17  
D1–D4  
4
4
R1  
R2, R4, R6  
R3  
1
3
1
1
0
1
1
1
1
2
3
1
1
1
150k  
49.9k  
432k  
280k  
1ꢀ resistor (0805)  
1ꢀ resistors (0805)  
1ꢀ resistor (0805)  
1ꢀ resistor (0805)  
1µF, 16V X5R ceramic  
capacitors (1206)  
Murata GRM42-6X5R105K016  
C5, C7, C20,  
C21, C22  
5
3
6
1
R5  
0.47µF, 25V X7R ceramic  
capacitors (1206)  
Murata GRM42-6X7R474K025  
R7  
Not installed (0805)  
C6, C8, C14  
R8  
107k  
1M  
1ꢀ resistor (0805)  
5ꢀ resistor (0805)  
R10  
0.1µF, 16V X7R ceramic  
capacitors (0603)  
Taiyo Yuden EMK107BJ104KA  
C9, C11, C12,  
C15, C16, C19  
U1  
MAX1747EUP (20 TSSOP)  
2-pin header  
JU1  
JU2, JU3  
None  
None  
None  
None  
3-pin headers  
1500pF, 50V X7R ceramic  
capacitor (0603)  
Taiyo Yuden UMK107BJ152KZ  
Shunts (JU1, JU2, JU3)  
MAX1747 PC board  
MAX1747 data sheet  
MAX1747 EV kit data sheet  
C10  
0.22µF, 10V X7R ceramic  
capacitor (0603)  
Taiyo Yuden LMK107BJ224KA  
C13  
1
0
C4, C18  
Not installed (1210)  
________________________________________________________________ Maxim Integrated Products  
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
12345

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