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| 型号： | MAX5033AASA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 3.3V 0.5A 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 3.3V |
| 输入电压： | 7.5 V ~ 76 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 125kHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 8-SOIC |
AVAILAB
LE
MAX5033
500mA, 76V, High-Efficiency, MAXPower
Step-Down DC-DC Converter
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.
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 270 μ A Quiescent Current at No Load, 10 μ A
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
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.
PART
MAX5033AUSA
MAX5033AUPA
MAX5033AASA
MAX5033BUSA
MAX5033BUPA
MAX5033BASA
TEMP RANGE
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
PIN-
PACKAGE
8 SO
8 PDIP
8 SO
8 SO
8 PDIP
8 SO
OUTPUT
VOLTAGE
(V)
3.3
5.0
Automotive
Applications
Functional Diagrams
MAX5033CUSA
MAX5033CUPA
MAX5033CASA
0 ° C to +85 ° C
0 ° C to +85 ° C
-40 ° C to +125 ° C
8 SO
8 PDIP
8 SO
12
Consumer Electronics
MAX5033DUSA
0 ° C to +85 ° C
8 SO
Industrial
Distributed Power
MAX5033DUPA
MAX5033DASA
0 ° C to +85 ° C
-40 ° C to +125 ° C
8 PDIP
8 SO
ADJ
This product is available in both leaded(Pb) and lead(Pb)-free
V IN
7.5V TO 76V
Typical Operating Circuit
packages. To order the lead(Pb)-free package, add a + after
the part number.
Pin Configuration
47 μ F
V IN
BST
0.1 μ F
R1
MAX5033
LX
D1
220 μ H
V OUT
5V, 0.5A
BST
1
8
LX
ON
ON/OFF
FB
50SQ100
33 μ F
VD
SGND
2
3
MAX5033
7
6
V IN
GND
0.1 μ F
R2 VD
OFF SGND GND
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
FB
4
SO/PDIP
5
ON/OFF
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim integrated .com.
19-2979; Rev 4; 4/10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5033AASA+ | 功能描述:直流/直流开关转换器 500mA 76V MAXPower Step-Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX5033AASA+T | 功能描述:直流/直流开关转换器 500mA 76V MAXPower Step-Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX5033AASA-T | 功能描述:直流/直流开关转换器 500mA 76V MAXPower Step-Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX5033AEPA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5033AESA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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