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MAX831 Evaluation Kit
___________________Quick Reference
Table 1. Jumper J1 Functions
The MAX831 EV kit is a fully assembled and tested sur-
face-mount board. Follow the steps below to verify
board operation. Do not turn on the power supply
until all connections are completed.
1) Connect an 8V to 30V supply to the pad marked
VIN. The ground connects to the GND pad.
SHUNT
LOCATION
OFF
ON
– — — —
S H D N PIN
Floating
Connected
to GND
MAX831 OUTPUT
MAX831 Enabled,
V OUT = 5.0V
Shutdown Mode,
V OUT = 0V
2) Connect a voltmeter and load (if any) to the VOUT
pad.
3) Remove the shunt on J1 for normal operation.
4) Turn on the power and verify that the output
voltage is 5.0V.
Instructions for modifying the board for different output
voltages appear in the sections Evaluating the MAX832
and MAX833 and Other Output Voltages.
_______________Detailed Description
Jumper Selection
The two-pin header J1 selects the shutdown mode.
Table 1 lists the jumper selectable options.
Notes about Inductor Selection
The 100μH Coilcraft D03316-104 inductor that comes
mounted with the EV kit has low resistance and a medi-
um current rating (1.3A). It provides excellent perfor-
mance over the line and load ranges of the
MAX830/MAX831/MAX832/MAX833.
For additional information on inductor selection, refer to
the MAX830–MAX833 data sheet.
Evaluating the MAX832 and MAX833
The MAX831 can be replaced by a MAX833 to gener-
ate a 3.0V output voltage with output current up to 1A,
or by a MAX832 to generate a 3.3V output voltage with
output current up to 1A. The only modification required
is to replace the IC.
L1
V IN
C1
C2
1
V IN
V SW
16
100μH
V OUT
+5V
+8V to +30V
33μF
35V
33μF
35V
2
3
V IN
V IN
U1
V SW
V SW
15
14
D1
1N5822
C3
220μF
10V
C4
220μF
10V
4
V IN
MAX831
V SW
13
R3
5
GND
GND
12
R4
OPEN
R2
OPEN
6
7
8
I LIM
GND
SENSE
V C
GND
SHUT
11
10
9
10k
C5
0.047μF
R1
0 ?
Figure 1. MAX831 EV Kit Schematic Diagram
J1
SHDN
GND
_______________________________________________________________________________________
2
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相关代理商/技术参数
MAX832CWE 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
MAX832CWE+ 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
MAX832CWE+T 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
MAX832CWE-T 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
MAX833CWE 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
MAX833CWE+ 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
MAX833CWE+T 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
MAX833CWE-T 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