MAX5052AEUA+ by Analog Devices

Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies

Status: Active
Series: MAX5052A, MAX5052B
RoHS: Unknown
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The MAX5052/MAX5053 current-mode PWM controllers contain all the control circuitry required for the design of wide-input-voltage isolated and nonisolated power supplies. The MAX5052 is well suited for universal input (rectified 85VAC to 265VAC) or telecom (-36VDC to -72VDC) power supplies. The MAX5053 is well suited for low-input-voltage (10.8VDC to 24VDC) power supplies. The MAX5052/MAX5053 contain an internal error amplifier that regulates the tertiary winding output voltage. This implements a primary-side regulated, isolated power supply, eliminating the need for an optocoupler. An input undervoltage lockout (UVLO) is provided for programming the input-supply start voltage and to ensure proper operation during brownout conditions. The input-supply start voltage is externally programmable with a voltage-divider. To shutdown the device, the UVLO pin is pulled low. Internal digital soft-start reduces output voltage overshoot. The internal thermal shutdown circuit protects the device in the event the junction temperature exceeds +130°C. The MAX5052 has an internal bootstrap UVLO with large hysteresis that requires a minimum voltage of 23.6V for startup. The MAX5053 does not have the internal bootstrap UVLO and can be biased directly from a minimum voltage of 10.8V. 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 MAX5052A/MAX5053A are offered with a 50% maximum duty-cycle limit. The MAX5052B/MAX5053B are offered with a 75% maximum duty-cycle limit. These devices are available in 8-pin µMAX packages and operate over the -40°C to +85°C temperature range.

Prices starting from US$0.90


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Features

Available in a Tiny 8-Pin µMAX Package
Current-Mode Control
50W Output Power
Universal Offline Input Voltage Range Rectified 85VAC to 265VAC (MAX5052)
Rectified 85VAC to 265VAC (MAX5052)
VIN Directly Driven from 10.8V to 24V Input (MAX5053)
Digital Soft-Start
Programmable Input Startup Voltage
Internal Bootstrap UVLO with Large Hysteresis (MAX5052)
Internal Error Amplifier with 1% Accurate Reference
Thermal Shutdown
45µA (typ) Startup Supply Current
1.4mA (typ) Operating Supply Current
Fixed Switching Frequency of 262kHz ±12%
50% Maximum Duty-Cycle Limit (MAX5052A/MAX5053A)
75% Maximum Duty-Cycle Limit (MAX5052B/MAX5053B)
60ns Cycle-by-Cycle Current-Limit Response Time

Specifications

VIN (V) (min) 21.6
VIN (V) (max) 1000
Topology FlybackSingle-Ended Forward
Application (VIN) Networking (48V)Power Over Ethernet (32-58V)Telecom (36-72V)Universal Off-line (90-240VAC)
Control Loop Current Mode
Feedback LinearOpto
Switching Frequency (kHz) 262
Duty Cycle (%) (max) 5075
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/8
BudgetaryPrice (See Notes) 0.93


MAX5052AEUA+ Power Management ICs - PMIC by Analog Devices

PWM CTRL CURRENT-MODE 262KHZ UMAX-8

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

Input Voltage -
Output Voltage -
Output Current -
Supply Voltage Min 10.8V
Supply Voltage Max 24V
Controller IC Case Style µMAX
No. of Pins 8Pins
Frequency 262kHz
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

PWM CTRL, CURRENT-MODE, 262KHZ, UMAX-8 | element14
Pwm Ctrl, Current-Mode, 262Khz, Umax-8 | Newark Electronics

Frequently Asked Questions

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Is the MAX5052AEUA+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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