IR3623MPBF

Series: -
PWM Type: Voltage Mode
Number of Outputs: 2
Buck: Yes
Inverting: No
Doubler: No
Divider: No
Cuk: No
Isolated: No
Packaging: TubeAlternate Packaging
Boost: No
Flyback: No
Operating Temperature: -40°C ~ 125°C
Duty Cycle: 85%
Package / Case: 32-VFQFN Exposed Pad
Frequency - Max: 1.2MHz
Manufacturer: International Rectifier
Voltage - Supply: 8.5 V ~ 14.5 V


Features:

• Dual Synchronous Controller with 180o Out of Phase Operation
• Configurable to 2-Independent Outputs or Current Share Single Output
• Output Voltage Tracking
• Power up /down Sequencing
• Current Sharing Using Inductor's DCR
• +/-1% Accurate Reference Voltage
• Programmable Switching Frequency up 1200kHz
• Programmable Over Current Protection
• Hiccup Current Limit Using MOSFET RDS(on) sensing
• Latched Overvoltage Protection
• Dual Programmable Soft-Starts
• Enable
• Pre-Bias Start-up
• Dual Power Good Outputs
• On Board Regulator
• External Frequency Synchronization
• Thermal Protection
• 32-Lead MLPQ Package


Application

• Embedded Telecom Systems
• Distributed Point of Load Power Architectures
• Computing Peripheral Voltage Regulator
• Graphics Card
• General DC/DC Converters


Pinout




Specifications

•Vcc Supply Voltage ........................................  ........ -0.5V to 16V
•PWM1, PWM2 .....................  . -0.5V to 16V
•PGood .... ................... .. -0.5V to 16V
•Gnd to SGnd .......................+/- 0.3V
•Storage Temperature Range ................................. -65 To 150
•Operating Junction Temperature Range ................ -40 To 125
•ESD Classification .............   JEDEC, JESD22-A114

Caution: Stresses above those listed in "Absolute Maximum Rating" may cause permanent damage to the device. These are stress ratings only and function of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to "Absolute Maximum Rating" conditions for extended periods may affect device reliability.

Description

The IR3623MPbF integrates a dual synchronous Buck controller, along with IP2003A it is providing a high performance and flexible solution. The IR3623 can be configured as 2-independent outputs or as current share single output. The current share configuration is ideal for high current applications.

IR3623MPbF enables output tracking and sequencing  of multiple rails in either ratiometric or simultaneous fashion. The IR3623 features 180o out of phase operation which reduces the required input/output capacitance and results to few number of capacitor quantity. The switching frequency is programmable from 200kHz to 1200kHz per phase using one external resistor, in addition IR3623MPbF also allows the switching frequency to be synchronized to an external clock signal. Other key features offered by this device include two independent programmable soft starts  two independent power good outputs, precision enable input and under voltage lockout function. The current limit is provided by sensing the lower MOSFET's on-resistance for optimum cost and performance. The output voltages are monitored through dedicated pins protect against open circuit and enhance faster response to an overvoltage event.

Parameters:

Technical/Catalog Information	IR3623MPBF
Vendor	International Rectifier
Category	Integrated Circuits (ICs)
Type	Step-Down (Buck)
Number of Outputs	2
Voltage - Input	8.5 ~ 14.5 V
Voltage - Output	Adjustable
Current - Output	200mA
Power - Output	-
Package / Case	32-MLPQ
Packaging	Tube
Internal Switch(s)	No
Synchronous	Yes
Rds (On)	-
Operating Temperature	-40°C ~ 125°C
Frequency - Switching	200kHz ~ 1.2MHz
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	IR3623MPBF IR3623MPBF