High-Voltage PWM Power-Supply Controller

Overview

Technical Documents

Ordering Info

Status

All versions are Not Recommended for New Designs. See Ordering Information for recommended replacements.

Description

The MAX5003 high-voltage switching power-supply controller has all the features and building blocks needed for a cost-effective flyback and forward voltage-mode control converter. This device can be used to design both isolated and nonisolated power supplies with multiple output voltages that operate from a wide range of voltage sources. It includes a high-voltage internal start-up circuit that operates from a wide 11V to 110V input range. The MAX5003 drives an external N-channel power MOSFET and has a current-sense pin that detects overcurrent conditions and turns off the power switch when the current-limit threshold is exceeded. The choice of external power MOSFET and other external components determines output voltage and power.

The MAX5003 offers some distinctive advantages: soft-start, undervoltage lockout, external frequency synchronization, and fast input voltage feed-forward. The device is designed to operate at up to 300kHz switching frequency. This allows use of miniature magnetic components and low-profile capacitors. Undervoltage lockout, soft-start, switching frequency, maximum duty cycle, and overcurrent protection limit are all adjustable using a minimum number of external components. In systems with multiple controllers, the MAX5003 can be externally synchronized to operate from a common system clock.

Warning: The MAX5003 is designed to operate with high voltages. Exercise caution.

The MAX5003 is available in 16-pin SO and QSOP packages. An evaluation kit (MAX5003EVKIT) is also available.

Data Sheet

Download	Rev 2	(PDF, 232kB)
E-Mail

Key Features

Wide Input Range: 11V to 110V
Internal High-Voltage Startup Circuit
Externally Adjustable Settings
- Output Switch Current Limit
- Oscillator Frequency
- Soft-Start
- Undervoltage Lockout
- Maximum Duty Cycle
Low External Component Count
External Frequency Synchronization
Primary or Secondary Regulation
Input Feed-Forward for Fast Line-Transient Response
Precision ±2.5% Reference over Rated Temperature Range
Thermal Shutdown

Applications/Uses

+42V Automobile Systems
High-Voltage Power Supply Modules
Industrial Power Supplies
ISDN Power Supplies
Telecommunication Power Supplies

Diagram

Pin Configuration

Application Notes

Application Note 819		Isolated Power Supply Is Suitable For Telecom/Datacom Applications
Application Note 3363		New Ethernet Systems Distribute DC Power with Data
Application Note 3539		A 50 Watt Internal Bus Architecture (IBA) Power Supply

Reliability Reports

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Software/Models

MAX5003 Isolated Power-Supply Design Software

Ordering Information

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Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5003CEE			NRND	MAX17499 MAX17500	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX5003CEE+			NRND	MAX17499 MAX17500	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5003CEE+T			NRND	MAX17499 MAX17500	QSOP;16 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX5003CEE-T			NRND	MAX17499 MAX17500	QSOP;16 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX5003CSE			NRND	MAX17499 MAX17500	SOIC(N);16 pin;61.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX5003CSE+			NRND	MAX17499 MAX17500	SOIC(N);16 pin;61.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5003CSE+T			NRND	MAX17499 MAX17500	SOIC(N);16 pin;61.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5003CSE-T			NRND	MAX17499 MAX17500	N.SO;16 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX5003EEE			NRND	MAX17499 MAX17500	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5003EEE+			NRND	MAX17499 MAX17500	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5003EEE+T			NRND	MAX17499 MAX17500	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5003EEE-T			NRND	MAX17499 MAX17500	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5003ESE			NRND	MAX17499 MAX17500	SOIC(N);16 pin;61.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5003ESE+			NRND	MAX17499 MAX17500	SOIC(N);16 pin;61.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5003ESE+T			NRND	MAX17499 MAX17500	SOIC(N);16 pin;61.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5003ESE-T			NRND	MAX17499 MAX17500	N.SO;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet

Notes:

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Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.