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參數(shù)資料
| 型號： | MAX5025 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 500kHz, 36V Output, SOT23, PWM Step-Up DC-DC Converters |
| 中文描述： | 500kHz、36V輸出、SOT23封裝、PWM升壓型DC-DC轉換器 |
| 文件頁數(shù)： | 11/13頁 |
| 文件大小： | 258K |
| 代理商： | MAX5025 |
M
500kHz, 36V Output, SOT23, PWM Step-Up
DC-DC Converters
______________________________________________________________________________________
11
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.
____________________Chip Information
TRANSISTOR COUNT: 365
PROCESS: BiCMOS
V
CC
V
OUT
+30V
GND
FB
PGND
C1
4.7
μ
F
1
μ
F
LX
L1
47
μ
H
MAX5025
MAX5026
C2
V
CC
= 4.5V TO 11V
(MAX5025)
V
CC
= 3V TO 11V
(MAX5026)
D1
R1
147k
R2
6.34k
TOKO 47
μ
H INDUCTOR
A915BY-470M
ZETEX SCHOTTKY DIODE
ZHCS500
SHDN
Figure 2. Adjustable 30V Output Circuit
V
CC
V
+30V
GND
FB
PGND
C1
4.7
μ
F
C2
1
μ
F
LX
L1
47
μ
H
MAX5025
MAX5026
C3
1
μ
F
V
CC
= 4.5V TO 11V
(MAX5025)
V
CC
= 3V TO 11V
(MAX5026)
D1
R1
147k
R3
100
R2
6.34k
TOKO 47
μ
H INDUCTOR
A915BY-470M
ZETEX SCHOTTKY DIODE
ZHCS500
SHDN
Figure 3. Adjustable 30V Output Circuit with RC Filter
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PDF描述 |
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| MAX5026EUT | RELIABILITY REPORT FOR MAX5026EUT PLASTIC ENCAPSULATED DEVICES |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5025_09 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:500kHz, 36V Output, SOT23, PWM Step-Up DC-DC Converters |
| MAX5025ESA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5025ETT+T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| MAX5025EUT | 制造商:Maxim Integrated Products 功能描述:500KHZ, 36V OUTPUT, SOT23, PWM STEP-UP DC-DC - Cut Tape Product |
| MAX5025EUT+ | 制造商:Maxim Integrated Products 功能描述:CONV DC-DC SGL-OUT STEP UP 6PIN SOT-23 - Rail/Tube |
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