802.11a/b/g Wireless LAN



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Maxim > Solutions > 802.11a/b/g Wireless LAN

802.3af Compliant Power Supplies

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Title / Parts

Key Advantages

QV PDF

µPMIC for Microprocessors or DSPs in Portable Equipment
MAX8620Y

Step-Down DC-DC Integrates 2 LDOs and Reset in Tiny TDFN to Power Microprocessor in Portables

QV PDF

IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices
MAX5941A, MAX5941B

Industry's First Fully Integrated IEEE 802.3af-Compliant Power-over-Ethernet Power-Supply ICs

QV PDF

Current-Mode PWM Controllers with Programmable Switching Frequency
MAX15000, MAX15001

Isolated/Nonisolated Current-Mode PWM Controllers in Tiny 10-Pin µMAX Packages with Adjustable Frequency from 12.5kHz to 625kHz

QV PDF

Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies
MAX5052, MAX5052A, MAX5052B, MAX5053, MAX5053A, MAX5053B

Isolated/Nonisolated Current-Mode PWM Controllers Work with Universal Offline, Telecom, or 12V Input Voltage

QV PDF

Current-Mode PWM Controllers with Integrated Startup Circuit for Isolated Power Supplies
MAX5014, MAX5015

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

Package

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

Operating Temp. Range (°C)

MAX15000

•	Networking (48V)

•	Power Over Ethernet (32-58V)

•	Universal Off-line (90-240VAC)

Flyback
Single-Ended Forward

•	Adjustable Frequency

•	High Voltage Start-Up Circuit

•	Internal Error Amplifier

•	Thermal Shutdown

•

UVLO

Current Mode

Primary Side

625

50
75

0.09

1,000

uMAX/10

-40 to +85

MAX15001

•	Base Station (24V)

•	Industrial (24V)

9.5

Flyback
Single-Ended Forward

•	Adjustable Frequency

•	High Voltage Start-Up Circuit

•	Internal Error Amplifier

•	Thermal Shutdown

•

UVLO

Current Mode

Primary Side

625

50
75

0.09

1,000

uMAX/10

-40 to +85

MAX5052

•	Networking (48V)

•	Power Over Ethernet (32-58V)

•	Telecom (36-72V)

•	Universal Off-line (90-240VAC)

21.6

375

Flyback
Single-Ended Forward

•	High Voltage Start-Up Circuit

•	Internal Error Amplifier

•	Thermal Shutdown

•

UVLO

Current Mode

Linear
Opto

262

50
75

0.045

1.4

291

Yes

uMAX/8

-40 to +85

MAX5053

•	Base Station (24V)

•	Industrial (24V)

10.8

Flyback
Single-Ended Forward

•	High Voltage Start-Up Circuit

•	Internal Error Amplifier

•	Thermal Shutdown

•

UVLO

Current Mode

Linear
Opto

262

50
75

0.045

1.4

291

uMAX/8

-40 to +85

MAX5014

•	Base Station (24V)

•	Industrial (24V)

•	Networking (48V)

•	Power Over Ethernet (32-58V)

•	Telecom (36-72V)

110

Flyback

•	High Voltage Start-Up Circuit

•	Thermal Shutdown

•

UVLO

Current Mode

Opto

275

1.4

465

Yes

SOIC/8

-40 to +85
0 to +70

MAX5015

•	Base Station (24V)

•	Industrial (24V)

•	Networking (48V)

•	Power Over Ethernet (32-58V)

•	Telecom (36-72V)

110

Single-Ended Forward

•	High Voltage Start-Up Circuit

•	Thermal Shutdown

•

UVLO

Current Mode

Opto

275

1.4

465

Yes

SOIC/8

-40 to +85
0 to +70

See All Isolated Power Supplies (29)

Key Specifications: Powered Devices

Part Number

IEEE Compliance

PD MOSFET R_DS(ON) (Ω)

Includes PWM

Switching Frequency (kHz)

Protection Features

Programmable UVLO

Package

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

Operating Temp. Range (°C)

MAX5941

802.3af

0.6

Yes

275

Programmable Inrush Current

Yes

SOIC/16

-40 to +85

See All Powered Devices (4)

Key Specifications: Switch-Mode DC-DC Power Supplies

Part Number

Topology

V_IN (min) (V)

V_IN (max) (V)

Number of DC-DC Outputs

Preset V_OUT (V)

Digital/VID Programmed Output

Min. Adjustable V_OUT (V)

Max. Adjustable V_OUT (V)

I_OUT (A)

Operating Current, I_CC (max) (mA)

Fixed Freq/PWM Operation

Operating Freq. (kHz)

Internal Power Switch(es)

Synchronous Rectifier

Package

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

MAX8620Y

Step-Down

2.7

5.5

1.8
2.5
2.6
2.85
3.0
3.3

0.6

3.3

0.5

0.11

Yes

4000

Yes

THIN QFN (Dual)/14

See All Switch-Mode DC-DC Power Supplies (421)