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Data Sheet

FULL DATA SHEET (PDF, 248kB) Download   E-Mail

Description

The MAX5021/MAX5022 current-mode PWM controllers contain all the control circuitry required for the design of wide input voltage range isolated power supplies. These devices are well suited for use in universal input (85VAC to 265VAC) off-line or telecom (-36VDC to -72VDC) power supplies. An undervoltage lockout (UVLO) circuit with large hysteresis coupled with low startup and operating current reduce power dissipation in the startup resistor and allow use of ceramic bypass capacitors. 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 MAX5021 with 50% maximum duty cycle and MAX5022 with 75% maximum duty cycle are recommended for forward converters and flyback converters, respectively. The MAX5021/MAX5022 are available in 6-pin SOT23, 8-pin µMAX, and 8-pin DIP packages and are rated for operation over the -40‹C to +85‹C temperature range.

An evaluation kit is available:  MAX5022EVKIT  

Key Features		Applications/Uses
Available in a Tiny 6-Pin SOT23 Package 50µA Typical Startup Current 1.2mA Typical Operating Current Large UVLO Hysteresis of 14V Fixed Switching Frequency of 262kHz ±12% 50% Maximum Duty Cycle Limit (MAX5021) 75% Maximum Duty Cycle Limit (MAX5022) 60ns Cycle-by-Cycle Current-Limit Response Time		Isolated Power Supplies Low-Power Telecom Power Supplies Mobile Phone Chargers Standby Power Supplies Universal Offline Power Supplies

Diagram

Typical Operating Circuit

Application Notes

Application Note 967: How to Minimize Power Dissipation in Li+ Linear Chargers - MAX5021 Application Note 1062: Designing Compact Telecom Power Supplies - MAX5021, MAX5022 Application Note 4033: Programmable Fan Controllers - MAX5021

Evaluation Kits

MAX5022EVKIT

Reliability Reports

Show FIT data for: MAX5021 MAX5022 Request Reliability Report for: MAX5021 MAX5022

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-18 of 18

MAX5021	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5021EVKIT			Active	Land Pattern: Not Available		See data sheet
MAX5021EPA			Active	PDIP(N);8 pin;81.9 mm² Outline Drawing: 21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5021EUT+			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6SN+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5021EUT-T			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6SN-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5021EUT+T			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6SN+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5021EUA			Active	µMAX;8 pin;16.2 mm² Outline Drawing: 21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5021EUA-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5021EUA+			Active	µMAX;8 pin;16.2 mm² Outline Drawing: 21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5021EUA+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5022	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5022EPA+			Active	PDIP(N);8 pin;81.9 mm² Outline Drawing: 21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5022EPA			Active	PDIP(N);8 pin;81.9 mm² Outline Drawing: 21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5022EUT+			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6SN+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5022EUT-T			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6SN-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5022EUT+T			Active	SOT;6 pin;9 mm² Outline Drawing: 21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6SN+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5022EUA			Active	µMAX;8 pin;16.2 mm² Outline Drawing: 21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5022EUA-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5022EUA+			Active	µMAX;8 pin;16.2 mm² Outline Drawing: 21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5022EUA+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet

More Information

Topmark Coding: MAX5021 MAX5022 New Product Press Release 2001-09-27

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