MAX845EUA+ by Analog Devices

Isolated Transformer Driver for PCMCIA Applications

Status: Active
Series: MAX845
RoHS: Unknown
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The MAX845 provides an isolated power supply small enough to fit in thin PCMCIA cards and space-sensitive applications. It drives a low-profile center-tapped transformer primary from a 5V or 3.3V DC power supply. The secondary can be wound to provide any isolated positive or negative voltage at powers up to 750mW. The MAX845 consists of an oscillator followed by a toggle flip-flop. The flip-flop generates two 50% duty-cycle square waves, which are complementary at half the oscillator frequency (450kHz, min). These two signals drive the ground-referenced N-channel power switches. Internal circuitry ensures break-before-make action between the two switches. A low-power shutdown disables both the switches and the oscillator, reducing power consumption. An evaluation kit (MAX845EVKIT-MM) is available to evaluate low-profile 5V 40mA and 5V 100mA applications.

Prices starting from US$2.28


Distributor Starting From Stock
Logo for CoreStaff CoreStaff US$2.28
100
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Logo for element14 element14 US$3.84
-
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Logo for Farnell Farnell US$6.67
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Features

Transformer Driver for Ultra-Thin 5V-µs Transformers
Isolated DC-to-DC Power Supply for PCMCIA Applications
450kHz Minimum Switching Frequency
Ultra-Low Input Supply Current Ripple
Single +5V or +3.3V Supply
5µW Low-Power Shutdown Mode
8-Pin SO and µMAX Packages
Low Output Ripple Permits Miniature Output Capacitors

Specifications

VIN (V) (min) 2.5
VIN (V) (max) 6
Driver Output Resistance (Ω) (max) 4
Max. IOUT (A) 0.2
Topology Push-Pull
Switching Frequency (kHz) 860
IQ (mA) (max) 1.1
Package/Pins SOIC (N)/8UMAX/8
Oper. Temp. (°C) -40 to +85
BudgetaryPrice (See Notes) 2.48


MAX845EUA+ Power Management ICs - PMIC by Analog Devices

ISOLATED TRANSFORMER DRIVER UMAX-8

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

Specifications

IC Function Transformer Driver
Supply Voltage Min 2.5V
Supply Voltage Max 6V
IC Package Type µMAX
No. of Pins 8Pins
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

Isolated Transformer Driver PCMCIA Apps | RS
ISOLATED TRANSFORMER DRIVER, UMAX-8 | Farnell

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX845EUA+ ?

Additional datasheets, footprints and schematics for MAX845EUA+ are listed on our Part Details page. You can also find images and similar parts to MAX845EUA+ on this page.

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Distributor pricing and stock information is available for MAX845EUA+ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view MAX845EUA+ price breaks, MOQs, lead times, inventory and SKUs from distributors.

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Is the MAX845EUA+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX845EUA+ have stock available?

Authorised distributors including RS, CoreStaff, element14 and Farnell have stock available or on a lead time for MAX845EUA+ .

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