电子工程世界电子工程世界电子工程世界

关键词

搜索

型号

搜索

MAX5053

产品描述SWITCHING CONTROLLER, 290 kHz SWITCHING FREQ-MAX, PDSO8
产品类别半导体    模拟混合信号IC   
文件大小346KB,共13页
制造商Maxim(美信半导体)
官网地址https://www.maximintegrated.com/en.html
下载文档 详细参数 选型对比 全文预览

MAX5053概述

SWITCHING CONTROLLER, 290 kHz SWITCHING FREQ-MAX, PDSO8

开关控制器, 290 kHz 开关 最大频率, PDSO8

MAX5053规格参数

参数名称属性值
功能数量1
端子数量8
额定输入电压12 V
最大限制输入电压24 V
最小限制输入电压10.8 V
最大工作温度85 Cel
最小工作温度-40 Cel
加工封装描述MICRO MAX, SOP-8
状态ACTIVE
工艺BICMOS
包装形状SQUARE
包装尺寸SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
表面贴装Yes
端子形式GULL WING
端子间距0.6500 mm
端子涂层TIN LEAD
端子位置DUAL
包装材料PLASTIC/EPOXY
温度等级INDUSTRIAL
控制模式PEAK CURRENT
控制技术PULSE WIDTH MODULATION
模拟IC其它类型SWITCHING CONTROLLER
交换机配置SINGLE
最大开关频率290 kHz

文档预览

下载PDF文档
19-2590; Rev 1; 11/03
IT
TION K
VALUA
E
BLE
AVAILA
Current-Mode PWM Controllers with an Error
Amplifier for Isolated/Nonisolated Power Supplies
General Description
The MAX5052/MAX5053 current-mode PWM controllers
contain all the control circuitry required for the design of
wide-input-voltage isolated and nonisolated power
supplies. The MAX5052 is well suited for universal input
(rectified 85VAC to 265VAC) or telecom (-36VDC to
-72VDC) power supplies. The MAX5053 is well suited for
low-input-voltage (10.8VDC to 24VDC) power supplies.
The MAX5052/MAX5053 contain an internal error ampli-
fier that regulates the tertiary winding output voltage.
This implements a primary-side regulated, isolated
power supply, eliminating the need for an optocoupler.
An input undervoltage lockout (UVLO) is provided for
programming the input-supply start voltage and to
ensure proper operation during brownout conditions.
The input-supply start voltage is externally programma-
ble with a voltage-divider. To shutdown the device, the
UVLO pin is pulled low. Internal digital soft-start
reduces output voltage overshoot. The internal thermal
shutdown circuit protects the device in the event the
junction temperature exceeds +130°C.
The MAX5052 has an internal bootstrap UVLO with
large hysteresis that requires a minimum voltage of
23.6V for startup. The MAX5053 does not have the
internal bootstrap UVLO and can be biased directly
from a minimum voltage of 10.8V.
The 262kHz switching frequency is internally trimmed to
±12% accuracy; this allows the optimization of the
magnetic and filter components resulting in compact,
cost-effective power supplies. The MAX5052A/
MAX5053A are offered with a 50% maximum duty-cycle
limit. The MAX5052B/MAX5053B are offered with a 75%
maximum duty-cycle limit. These devices are available
in 8-pin µMAX packages and operate over the -40°C to
+85°C temperature range.
Features
Available in a Tiny 8-Pin µMAX Package
Current-Mode Control
50W Output Power
Universal Offline Input Voltage Range
Rectified 85VAC to 265VAC (MAX5052)
V
IN
Directly Driven from 10.8V to 24V Input
(MAX5053)
Digital Soft-Start
Programmable Input Startup Voltage
Internal Bootstrap UVLO with Large Hysteresis
(MAX5052)
Internal Error Amplifier with 1% Accurate
Reference
Thermal Shutdown
45µA (typ) Startup Supply Current
1.4mA (typ) Operating Supply Current
Fixed Switching Frequency of 262kHz ±12%
50% Maximum Duty-Cycle Limit
(MAX5052A/MAX5053A)
75% Maximum Duty-Cycle Limit
(MAX5052B/MAX5053B)
60ns Cycle-by-Cycle Current-Limit Response Time
MAX5052/MAX5053
Ordering Information
PART
MAX5052AEUA
MAX5052BEUA
MAX5053AEUA
MAX5053BEUA
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 µMAX
8 µMAX
8 µMAX
8 µMAX
Applications
Universal Input AC
Power Supplies
Isolated Telecom Power
Supplies
Networking Systems
Computer Systems/
Servers
Industrial Power
Conversion
Isolated Keep-Alive
Circuits
12V Boost Regulators
12V SEPIC Regulators
Warning:
The MAX5052/MAX5053 are designed to work with
high voltages. Exercise caution.
Pin Configuration
TOP VIEW
UVLO/EN
1
FB
2
COMP
3
8
7
V
IN
V
CC
NDRV
GND
MAX5052
MAX5053
6
5
CS
4
Functional Diagram/Typical Operating Circuit/Selector
Guide appear at end of data sheet.
µMAX
1
________________________________________________________________
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.

MAX5053相似产品对比

MAX5053 MAX5052
描述 SWITCHING CONTROLLER, 290 kHz SWITCHING FREQ-MAX, PDSO8 SWITCHING CONTROLLER, 290 kHz SWITCHING FREQ-MAX, PDSO8
功能数量 1 1
端子数量 8 8
额定输入电压 12 V 12 V
最大限制输入电压 24 V 24 V
最小限制输入电压 10.8 V 10.8 V
最大工作温度 85 Cel 85 Cel
最小工作温度 -40 Cel -40 Cel
加工封装描述 MICRO MAX, SOP-8 MICRO MAX, SOP-8
状态 ACTIVE ACTIVE
工艺 BICMOS BICMOS
包装形状 SQUARE SQUARE
包装尺寸 SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
表面贴装 Yes Yes
端子形式 GULL WING GULL WING
端子间距 0.6500 mm 0.6500 mm
端子涂层 TIN LEAD TIN LEAD
端子位置 DUAL DUAL
包装材料 PLASTIC/EPOXY PLASTIC/EPOXY
温度等级 INDUSTRIAL INDUSTRIAL
控制模式 PEAK CURRENT PEAK CURRENT
控制技术 PULSE WIDTH MODULATION PULSE WIDTH MODULATION
模拟IC其它类型 SWITCHING CONTROLLER SWITCHING CONTROLLER
交换机配置 SINGLE SINGLE
最大开关频率 290 kHz 290 kHz

 
EEWorld订阅号

 
EEWorld服务号

 
汽车开发圈

 
机器人开发圈

About Us 关于我们 客户服务 联系方式 器件索引 网站地图 最新更新 手机版

站点相关: 大学堂 TI培训 Datasheet 电子工程 索引文件: 2922  1081  2656  2830  1438  36  30  19  23  20 

器件索引   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

北京市海淀区中关村大街18号B座15层1530室 电话:(010)82350740 邮编:100190

电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号 Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved