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Part Number: MAX5075A
Description: The MAX5075 is a +4.5V to +15V push-pull, current-fed topology driver subsystem with an integrated oscillator for use i...
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MAX5075A
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General Description
MAX5075A General Description
The MAX5075 is a +4.5V to +15V push-pull, current-fed topology driver subsystem with an integrated oscillator for use in telecom module power supplies. The device drives two MOSFETs connected to a center-tapped transformer primary providing secondary-side, isolated, negative or positive voltages. This device features a pro- grammable, accurate, integrated oscillator with a syn chronizing clock output that synchronizes an external PWM regulator. A single external resistor programs the internal oscillator frequency from 50kHz to 1.5MHz.
The MAX5075 incorporates a dual MOSFET driver with ±3A peak drive currents and 50% duty cycle. The MOSFET driver generates complementary signals to
drive external ground-referenced n-channel MOSFETs.
The MAX5075 is available with a clock output frequency to MOSFET driver frequency ratio of 1x, 2x, and 4x. The MAX5075 is available in a thermally enhanced 8-pin (R) MAX package and is specified over the -40°C to +125°C operating temperature range.
MAX5075A Maximum Ratings
VCC to DGND, PGND.............................................-0.3V to +18V
CLK, RT to DGND.....................................................-0.3V to +6V
NDRV1, NDRV2 to PGND...........................-0.3V to (VCC + 0.3V)
DGND to PGND.....................................................-0.3V to +0.3V
CLK Current......................................................................±20mA
NDRV1, NDRV2 Peak Current (200ns)..................................±5A
NDRV1, NDRV2 Reverse Current (Latchup Current)......±500mA
Continuous Power Dissipation (TA = +70°C)
8-Pin MAX (derate 10.3mW/°C above +70°C)...........825mW
Operating Temperature Range .........................-40°C to +125°C
Maximum Junction Temperature.....................................+150°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX5075A Features
*Current-Fed, Push-Pull Driver Subsystem
* Programmable, Accurate Internal Oscillator
*Single +4.5V to +15V Supply Voltage Range
* Dual ±3A Gate-Drive Outputs
* 1mA Operating Current at 250kHz with No Capacitive Load
*Synchronizing Clock Frequency Generation Options
* Thermally Enhanced 8-Pin MAX Package
*-40°C to +125°C Operating Temperature Range
* Programmable, Accurate Internal Oscillator
*Single +4.5V to +15V Supply Voltage Range
* Dual ±3A Gate-Drive Outputs
* 1mA Operating Current at 250kHz with No Capacitive Load
*Synchronizing Clock Frequency Generation Options
* Thermally Enhanced 8-Pin MAX Package
*-40°C to +125°C Operating Temperature Range
MAX5075A Typical Application
Current-Fed, High-Efficiency Power-Supply Modules
Power-Supply Building Subsystems
Push-Pull Driver Subsystems
MAX is a registered trademark of Maxim Integrated Products, Inc.
Power-Supply Building Subsystems
Push-Pull Driver Subsystems
MAX is a registered trademark of Maxim Integrated Products, Inc.
MAX5075A Connection Diagram
MAX5075A
PDF/DataSheet Download
- Datasheet: MAX5075A
- File Size: 193820 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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