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Part Number: MAX5077
Description: The MAX5077 is a +4.5V to +15V push-pull, current-fed topology driver subsystem with an integrated oscillator used i...
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MAX5077
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DataSheet
General Description
MAX5077 General Description
The MAX5077 is a +4.5V to +15V push-pull, current-fed topology driver subsystem with an integrated oscillator used 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. The MAX5077 features a programmable accurate integrated oscillator with a synchronizing clock output to synchronize an external PWM regulator. A single external resistor programs the internal oscillator frequency from 50kHz to 1.5MHz.
The MAX5077 incorporates dual MOSFET drivers with ±3A peak drive currents and 50% duty cycle. The MOSFET drivers generate complementary signals to drive external ground-referenced n-channel MOSFETs.
The MAX5077 clock output frequency is programmable by logic inputs to set the clock output to 1x, 2x, or 4x the MOSFET's driver frequency.
The MAX5077 is available in a 14-pin exposed pad TSSOP package and is specified over the -40°C to +125°C operating temperature range.
MAX5077 Maximum Ratings
VCC to AGND, DGND, PGND.................................-0.3V to +18V
PGND, DGND to AGND........................................-0.3V to +0.3V
SEL1, SEL2 to DGND...........................................-0.3V to +18V
CLK, RT to AGND...................................................-0.3V to +6V
NDRV1, NDRV2 to PGND...........................-0.3V to (VCC+ 0.3V)
CLK Current..................................................................±20mA
NDRV1, NDRV2 Peak Current (200ns).................................±5A
NDRV1, NDRV2 Reverse Current (Latchup Current).....±500mA
Continuous Power Dissipation (TA= +70°C)
14-Pin TSSOP (derate 20.8mW/°C above +70°C).....1667mW
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
PGND, DGND to AGND........................................-0.3V to +0.3V
SEL1, SEL2 to DGND...........................................-0.3V to +18V
CLK, RT to AGND...................................................-0.3V to +6V
NDRV1, NDRV2 to PGND...........................-0.3V to (VCC+ 0.3V)
CLK Current..................................................................±20mA
NDRV1, NDRV2 Peak Current (200ns).................................±5A
NDRV1, NDRV2 Reverse Current (Latchup Current).....±500mA
Continuous Power Dissipation (TA= +70°C)
14-Pin TSSOP (derate 20.8mW/°C above +70°C).....1667mW
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
MAX5077 Features
Dedicated Current-Fed, Push-Pull Driver Subsystem
Oscillator Frequency Programmable from 50kHz to 1.5MHz
Single +4.5V to +15V Supply Voltage Range
±3A Peak Gate-Drive Current
1mA Operating Current at 250kHz with No Capacitive Load
Selectable Synchronizing Clock Frequency for a Preceding PWM Stage
Thermally Enhanced 14-Pin TSSOP
-40°C to +125°C Operating Temperature Range
Oscillator Frequency Programmable from 50kHz to 1.5MHz
Single +4.5V to +15V Supply Voltage Range
±3A Peak Gate-Drive Current
1mA Operating Current at 250kHz with No Capacitive Load
Selectable Synchronizing Clock Frequency for a Preceding PWM Stage
Thermally Enhanced 14-Pin TSSOP
-40°C to +125°C Operating Temperature Range
MAX5077 Typical Application
-Current-Fed Power Supplies
-Power-Supply Building Subsystems
-Push-Pull Driver Subsystems
-Power-Supply Building Subsystems
-Push-Pull Driver Subsystems
MAX5077 Connection Diagram
MAX5077
PDF/DataSheet Download
- Datasheet: MAX5077
- File Size: 237568 KB
- Manufacturer: MAXIM
- Click here to Download
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