MAX5003 고전압 PWM 전원 컨트롤러

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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.

주요기능

애플리케이션/용도

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

	+42V 자동차 시스템
	고전압 전원 모듈
	산업용 전원
	ISDN 전원
	텔레콤 전원

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 (%)

Operating Current, I_CC (max) (mA)

Gate Drive Current (A)

Current Sense Threshold (mV)

EV-Kit

RoHS Available

Package

Operating Temp. Range (°C)

Price^**

MAX5003

•	Base Station (24V)

•	Industrial (24V)

•	Networking (48V)

•	Power Over Ethernet (32-58V)

•	Telecom (36-72V)

110

Flyback
Single-Ended Forward

•	Adjustable Frequency

•	High Voltage Start-Up Circuit

•	Internal Error Amplifier

•	Synchronizable Freqeuncy

•	Thermal Shutdown

•

UVLO

Voltage Mode

Linear
Opto

1,200

1.2

100

Yes

QSOP/16
SOIC/16

-40 to +85

$1.18 @ 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.