MAX845EVKIT-MM [MAXIM]
Isolated Power Supply;
| 型号： | MAX845EVKIT-MM |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Isolated Power Supply |
| 文件： | 总4页 (文件大小：45K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-0372; Rev 4; 10/97
MAX8 4 5 Eva lu a t io n Kit
Evluates:MAX845
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
♦ Isolated Power Supply
The MAX845 evaluation kit (EV kit) is an assembled and
tested isolated 5V power supply that meets PCMCIA
height requirements. Two demonstration circuits are
provided: a 100mA circuit that uses an industry-stan-
dard 78L05 regulator, and a 40mA circuit that uses a
low-cost zener shunt regulator. Both circuits consist of
a MAX845 IC (in the µMAX package), a low-profile
transformer, a half-wave rectified voltage doubler, and
a regulator.
♦ Low Profile (for PCMCIA cards)
______________Ord e rin g In fo rm a t io n
PART
TEMP. RANGE
BOARD TYPE
MAX845EVKIT-MM
0°C to +70°C
Surface Mount
____________________Co m p o n e n t Lis t
DESIGNATION QTY
DESCRIPTION
C11-C14,
8
_________________________Qu ic k S t a rt
0.1µF ceramic 1206 capacitors
C21-C24
The MAX845 EV kit is fully a s s e mb le d a nd te s te d .
Follow the steps below to verify board operation. Do
not turn on the power supply until all connections
are completed. The circuit on the top half of the board
can provide up to 100mA. The circuit on the lower half
of the board can provide up to 40mA.
D11, D12
2
1
Motorola MBR0520L Schottky diodes
Series-connected dual Schottky diodes
Central Semiconductor CMPSH-3S
D21
R22
U11, U21
U12
1
2
1
51Ω 1206 resistor
Maxim MAX845EUA
1) Connect a 4.5V to 5.5V supply to the pad marked
+5V IN. The power-supply ground return connects
to the GND pad.
78L05 in surface-mount 8-pin SOIC
1:1:1 low-profile transformer
Halo TGM-010P3
T11, T21
Z21
2
1
2) Connect a voltmeter and load (if any) to the +5OUT
pad. The load ground return connects to the ISO
GND pad.
5.1V, 5% zener in SOT-23
Central Semiconductor CMPZ5231B
3) Turn on the power and verify that the output is 5V
±5%.
4) To evaluate shutdown, cut the trace connecting SD
to GND and connect SD to V
.
CC
______________Co m p o n e n t S u p p lie rs
SUPPLIER
Central
PHONE
FAX
(516) 435-1110
(516) 435-1824
Semiconductor
Halo Electronics
(415) 969-7313
(602) 244-5303
(415) 367-7158
(602) 244-4015
Motorola
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
MAX8 4 5 Eva lu a t io n Kit
ISOLATED 5V @ 100mA:
D11
MBR0520L
T11
HALO TGM-010P3
OFF
ON
ISO
+5V
IN
8
1
IN
OUT
+5V
U11
U12
1
6
8
4
3
5
2
7
SD
FS
D1
78L05
MAX845
C12
C11
0.1µF
0.1µF
N.C.
G1
V
CC
ISO
GND
GND
2
3 6 7
G2
D2
C13
0.1µF
C14
0.1µF
Evluates:MAX845
D12
MBR0520L
LOW PROFILE, ISOLATED 5V @ 40mA:
R22
ISO
+5V
T21
51Ω
HALO TGM-010P3
OFF
ON
+5V
IN
D21A
U21
1
6
8
4
3
5
2
7
C22
0.1µF
SD
FS
D1
MAX845
ISO
GND
Z21
5.1V
C21
0.1µF
CMPSH-3S
SOT-23
D21B
N.C.
G1
V
CC
C24
0.1µF
GND
G2
D2
C23
0.1µF
NOTE: THE TWO CIRCUITS DO NOT SHARE THE SAME GROUNDS.
Figure 1. MAX845 EV Kit Schematic
2
_______________________________________________________________________________________
MAX8 4 5 Eva lu a t io n Kit
Evluates:MAX845
Figure 2. MAX845 EV Kit Component Placement Guide—
Component Side
Figure 3. MAX845 EV Kit PC Board Layout—Component Side
Figure 4. MAX845 EV Kit PC Board Layout—Solder Side
_______________________________________________________________________________________
3
MAX8 4 5 Eva lu a t io n Kit
NOTES
Evluates:MAX845
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
4 _____________________Ma x im In t e g ra t e d P ro d u c t s , 1 2 0 S a n Ga b rie l Drive , S u n n yva le , CA 9 4 0 8 6 4 0 8 -7 3 7 -7 6 0 0
© 1997 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
相关型号：
MAX846AEEE-T
Power Supply Support Circuit, Fixed, 1 Channel, CMOS, PDSO16, 0.150 INCH, 0.025 INCH PITCH, QSOP-16
MAXIM
MAX846AEVKIT
Flash Programmable 12-Bit Integrated Data-Acquisition Systems[MAX7651/MAX7652/MAX7651CCB/MAX7651CCB-T/MAX7651ECB/MAX7651ECB-T/MAX7651EVKIT/MAX7652CCB/MAX7652CCB-T/MAX7652ECB/MAX7652ECB-T ]
MAXIM
MAX847EEI-T
Power Supply Management Circuit, Adjustable, 1 Channel, PDSO28, 0.150 INCH, 0.025 INCH PITCH, QSOP-28
MAXIM
©2020 ICPDF网 联系我们和版权申明