参数资料
型号: MAX5026EVKIT
厂商: Maxim Integrated Products
文件页数: 11/13页
文件大小: 0K
描述: EVAL KIT FOR MAX5026
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: DC/DC,步升
输出及类型: 1,非隔离
输出电压: 30V
电流 - 输出: 6mA
输入电压: 3 ~ 11V
稳压器拓扑结构: 升压
频率 - 开关: 500kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: MAX5026
500kHz, 36V Output, SOT23,
Step-Up DC-DC Converters
trace lengths to reduce stray capacitance, trace resis-
tance, and radiated noise. The trace between the out-
put voltage-divider (MAX5025/MAX5026) and the FB
pin must be kept short, as well as the trace between
GND and PGND.
Inductor Layout
The shielded drum type inductors have a small air gap
around the top and bottom periphery. The incident fring-
ing magnetic field from this air gap to the copper plane
on the PC board tends to reduce efficiency. This is a
result of the induced eddy currents on the copper plane.
To minimize this effect, avoid laying out any copper
planes under the mounting area of these inductors.
30V Boost Application Circuit
Figures 2 and 3 show the MAX5025/MAX5026 operat-
ing in a 30V boost application. Figure 3 has an RC filter
to reduce noise at the output. These circuits provide
output currents greater than 4mA with an input voltage
of 5V or greater. They are designed by following the
Design Procedure section. Operating characteristics of
these circuits are shown in the Typical Operating
Characteristics section.
47 μ H A915BY-470M
V CC = 4.5V TO 11V
(MAX5025)
V CC = 3V TO 11V
V CC
L1 TOKO 47 μ H INDUCTOR
ZETEX SCHOTTKY DIODE
D1 ZHCS500
LX
V OUT
+30V
(MAX5026)
C1
4.7 μ F
MAX5025
MAX5026
SHDN
FB
R1
147k Ω
C2
1 μ F
R2
Figure 2. Adjustable 30V Output Circuit
PGND GND
6.34k Ω
47 μ H A915BY-470M
V CC = 4.5V TO 11V
(MAX5025)
V CC = 3V TO 11V
V CC
L1 TOKO 47 μ H INDUCTOR
ZETEX SCHOTTKY DIODE
D1 ZHCS500
LX
R3
100 Ω
V OUT
+30V
(MAX5026)
C1
4.7 μ F
MAX5025
MAX5026
SHDN
FB
R1
147k Ω
C2
1 μ F
C3
1 μ F
R2
PGND GND
Figure 3. Adjustable 30V Output Circuit with RC Filter
6.34k Ω
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