MAX5094A, MAX5094B, MAX5094C, MAX5094D, MAX5095A, MAX5095B, MAX5095C High-Performance, Single-Ended, Current-Mode PWM Controllers

Description

The MAX5094A/B/C/D/MAX5095A/B/C BiCMOS, high-performance, current-mode PWM controllers have all the features required for wide input-voltage range isolated/nonisolated power supplies. These controllers are used for low- and high-power universal input voltage and telecom power supplies.

The MAX5094/MAX5095 contain a fast comparator with only 60ns typical delay from current sense to the output for overcurrent protection. The MAX5094 has an integrated error amplifier with the output at COMP. Softstart is achieved by controlling the COMP voltage rise using external components.

The oscillator frequency is adjustable from 20kHz to 1MHz with an external resistor and capacitor. The timing capacitor discharge current is trimmed allowing for programmable dead time and maximum duty cycle for a given frequency. The available saw-toothed waveform at R_TC_T can be used for slope compensation when needed.

The MAX5095A/MAX5095B include a bidirectional synchronization circuit allowing for multiple controllers to run at the same frequency to avoid beat frequencies. Synchronization is accomplished by simply connecting the SYNC of all devices together. When synchronizing with other devices, the MAX5095A/MAX5095B with the highest frequency synchronizes the other devices. Alternatively, the MAX5095A/MAX5095B can be synchronized to an external clock with an open-drain output stage running at a higher frequency.

The MAX5095C provides a clock output pulse (ADV_CLK) that leads the driver output (OUT) by 110ns. The advanced clock signal is used to drive the secondary-side synchronous rectifiers.

The MAX5094A/B/C are available in the 8-pin SO and 8-pin µMAX® packages. The MAX5094D and MAX5095A/B/C are available in the 8-pin µMAX package. All devices operate over the automotive temperature range of -40°C to +125°C.

Key Features

Applications/Uses

Pin-for-Pin Replacement for UCC28C43 (MAX5094A) and UCC28C45 (MAX5094B)
2A Drive Source and 1A Sink Capability
Up to 1MHz Switching Frequency Operation
Bidirectional Frequency Synchronization (MAX5095A/MAX5095B)
Advanced Output Drive for Secondary-Side Synchronous Rectification (MAX5095C)
Fast 60ns Cycle-by-Cycle Current Limit
Trimmed Oscillator Capacitor Discharge Current Sets Maximum Duty Cycle Accurately
Accurate ±5% Start Voltage with 0.8V Hysteresis
Low 32µA Startup Current
5V Regulator Output (REF) with 20mA Capability
Versions with 0.3V Current-Sense Threshold
Overtemperature Shutdown

	Computer Systems/Servers
	Industrial Power Conversion
	Isolated Keep-Alive Circuits
	Isolated Power-Supply Modules
	Isolated Telecom Power Supplies
	Networking Systems
	Universal Input AC/DC Power Supplies

Key Specifications: Isolated Power Supplies

Part Number

Application (Nominal Input Voltage)

V_IN (min) (V)

V_IN (max) (V)

Topology

Features

Control Loop

Feedback Type

Frequency (kHz)

Max. Duty Cycle (%)

Start-Up Current (max) (mA)

Operating Current, I_CC (max) (mA)

Gate Drive Current (A)

Current Sense Threshold (mV)

EV-Kit

RoHS Available

Industry Qualified

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX5094

•	Base Station (24V)

•	Industrial (24V)

•	Networking (48V)

•	Power Over Ethernet (32-58V)

•	Telecom (36-72V)

8.4

26.5

Flyback
Single-Ended Forward

•	Adjustable Frequency

•	High Voltage Start-Up Circuit

•	Internal Error Amplifier

•	Thermal Shutdown

•

UVLO

Current Mode

Linear
Opto

1,000

100
50

0.065

300

Yes

Automotive - General

SOIC/8
uMAX/8

-40 to +125

$0.64 @ 1k

MAX5095

•	Adjustable Frequency

•	High Voltage Start-Up Circuit

•	Synchronizable Freqeuncy

•	Thermal Shutdown

•

UVLO

Opto

uMAX/8

$0.64 @ 1k

See All Isolated Power Supplies (29)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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: 1-40 of 40

MAX5094A

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5094AASA+T

-40°C to +125°C

See data sheet

MAX5094AASA+

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8+4*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5094AASA

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8-4*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5094AASA-T

-40°C to +125°C

See data sheet

MAX5094AAUA-T

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5094AAUA+

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5094AAUA+T

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5094AAUA

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5094B

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5094BASA-T

-40°C to +125°C

See data sheet

MAX5094BASA+T

-40°C to +125°C

See data sheet

MAX5094BASA+

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8+4*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5094BASA

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8-4*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5094BAUA

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5094BAUA+

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5094BAUA+T

-40°C to +125°C

See data sheet

MAX5094BAUA-T

-40°C to +125°C

See data sheet

MAX5094C

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5094CASA+

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8+4*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5094CASA-T

-40°C to +125°C

See data sheet

MAX5094CASA

SOIC;8 pin;31 mm²
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S8-4*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5094CASA+T

-40°C to +125°C

See data sheet

MAX5094CAUA-T

-40°C to +125°C

See data sheet

MAX5094CAUA+T

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5094CAUA+

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5094CAUA

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5094D

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5094DAUA-T

-40°C to +125°C

See data sheet

MAX5094DAUA+T

-40°C to +125°C

See data sheet

MAX5094DAUA+

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5094DAUA

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5095A

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5095AAUA

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5095AAUA+T

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5095AAUA+

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5095AAUA-T

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5095B

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5095BAUA+

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5095BAUA-T

-40°C to +125°C

See data sheet

MAX5095BAUA

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5095BAUA+T

-40°C to +125°C

See data sheet

MAX5095C

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5095CAUA+T

-40°C to +125°C

See data sheet

MAX5095CAUA

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8-1*

-40°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX5095CAUA+

uMAX;8 pin;16 mm²
Dwg: 21-0036J (PDF)
Use pkgcode/variation: U8+1*

-40°C to +125°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5095CAUA-T

-40°C to +125°C

See data sheet

Related Products

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MAX5070, MAX5071 High-Performance, Single-Ended, Current-Mode PWM Controllers
MAX5052, MAX5052A, MAX5052B, MAX5053, MAX5053A, MAX5053B Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies