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參數資料
| 型號： | MAX5033BUSA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 500mA, 76V, High-Efficiency, MAXPower Step-Down DC-DC Converter |
| 中文描述： | 2.1 A SWITCHING REGULATOR, 135 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數： | 1/17頁 |
| 文件大小： | 292K |
| 代理商： | MAX5033BUSA |
General Description
The MAX5033 easy-to-use, high-efficiency, high-voltage,
step-down DC-DC converter operates from an input volt-
age up to 76V and consumes only 270μA quiescent cur-
rent at no load. This pulse-width modulated (PWM)
converter operates at a fixed 125kHz switching frequen-
cy at heavy loads, and automatically switches to pulse-
skipping mode to provide low quiescent current and
high efficiency at light loads. The MAX5033 includes
internal frequency compensation simplifying circuit
implementation. The device uses an internal low-on-
resistance, high-voltage, DMOS transistor to obtain high
efficiency and reduce overall system cost. This device
includes undervoltage lockout, cycle-by-cycle current
limit, hiccup-mode output short-circuit protection, and
thermal shutdown.
The MAX5033 delivers up to 500mA output current.
The output current may be limited by the maximum
power dissipation capability of the package. External
shutdown is included, featuring 10μA (typ) shutdown
current. The MAX5033A/B/C versions have fixed output
voltages of 3.3V, 5V, and 12V, respectively, while the
MAX5033D features an adjustable output voltage, from
1.25V to 13.2V.
The MAX5033 is available in space-saving 8-pin SO
and 8-pin plastic DIP packages and operates over the
automotive (-40°C to +125°C) temperature range.
Applications
Automotive
Consumer Electronics
Industrial
Distributed Power
Features
o
Wide 7.5V to 76V Input Voltage Range
o
Fixed (3.3V, 5V, 12V) and Adjustable (1.25V to
13.2V) Voltage Versions
o
500mA Output Current
o
Efficiency Up to 94%
o
Internal 0.4
High-Side DMOS FET
o
270μA Quiescent Current at No Load, 10μA
Shutdown Current
o
Internal Frequency Compensation
o
Fixed 125kHz Switching Frequency
o
Thermal Shutdown and Short-Circuit Current Limit
o
8-Pin SO and PDIP Packages
Ordering Information
M
500mA, 76V, High-Efficiency, MAXPower
Step-Down DC-DC Converter
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
19-2979; Rev 2; 5/04
PART
TEMP RANGE
PIN-
PACKAGE
OUTPUT
VOLTAGE
(V)
MAX5033AUSA
MAX5033AUPA
MAX5033AASA
MAX5033BUSA
MAX5033BUPA
MAX5033BASA
MAX5033CUSA
MAX5033CUPA
MAX5033CASA
MAX5033DUSA
MAX5033DUPA
MAX5033DASA
0
°
C to +85
°
C
0
°
C to +85
°
C
-40
°
C to +125
°
C
0
°
C to +85
°
C
0
°
C to +85
°
C
-40
°
C to +125
°
C
0
°
C to +85
°
C
0
°
C to +85
°
C
-40
°
C to +125
°
C
0
°
C to +85
°
C
0
°
C to +85
°
C
-40
°
C to +125
°
C
8 SO
8 PDIP
8 SO
8 SO
8 PDIP
8 SO
8 SO
8 PDIP
8 SO
8 SO
8 PDIP
8 SO
3.3
5.0
12
ADJ
1
2
3
4
BST
VD
SGND
FB
8
7
6
5
LX
V
IN
GND
ON/OFF
MAX5033
SO/PDIP
Pin Configuration
MAX5033
GND
BST
LX
V
IN
SGND
FB
VD
D1
50SQ100
220
μ
H
V
5V, 0.5A
V
IN
7.5V TO 76V
47
μ
F
0.1
μ
F
0.1
μ
F
33
μ
F
ON
OFF
R1
R2
ON/OFF
Typical Operating Circuit
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX5033BUSA+ | 功能描述:直流/直流開關轉換器 500mA 76V MAXPower Step-Down RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX5033BUSA+T | 功能描述:直流/直流開關轉換器 500mA 76V MAXPower Step-Down RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX5033BUSA-T | 功能描述:直流/直流開關轉換器 500mA 76V MAXPower Step-Down RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX5033CAPA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5033CASA | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
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