IR3622AMPBF

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
Package / Case: 32-VFQFN Exposed Pad
Frequency - Max: 600kHz
Duty Cycle: 84%
Manufacturer: International Rectifier
Voltage - Supply: 4.5 V ~ 14.5 V


Features:

·Dual Synchronous Controller with 180°Out of Phase Operation
·Configurable to 2-Independent Outputs or Current Shared Single Output
·Output Voltage Tracking
·Power up / down Sequencing
·Current Sharing Using Inductor's DC
·+/-1% Accurate Reference Voltage
·Programmable Switching Frequency up 600kHz
·Programmable Over Current Protection
·Hiccup Current Limit Using MOSFET R_ds(on) sensing
·Latched Overvoltage Protection
·Dual Programmable Soft-Starts
·Programmable Enable Input
·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


Specifications

Vcc, VcL Supply Voltage .................................-0.5V to 16V
VcH1,VcH2 .....................................................-0.5V to 30V
PGood1, PGood2 ...........................................-0.5V to 16V
HDrv1, HDrv2 .........................-0.5V to 30V(-2V for 100ns)
LDrv1, LDrv2............................0.5V to 16V(-2V for 100ns)
Gnd to PGnd .........................................................+/-0.3V
Storage Temperature Range .................... -65 To 150
Operating Junction Temperature Range.....-40 To 125
ESD Classification  ..................-JEDEC, JESD22-A114(1KV)
Moisture Sensitivity Level .............JEDEC, Level3 @ 260

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 deviceat 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 IR3622AMPbF integrates a dual synchronous Buck controller, providing a high performance and flexible solution. The IR3622A can be configured as 2-independent outputs or as current shared single output. The current share configuration is ideal for high current applications.

The IR3622AMPbF enables output tracking and sequencing of multiple rails in either ratiometric or simultaneous fashion. The IR3622A features 180°out of phase operation which reduces the required input/output capacitance and results in lower number of capacitors. The switching frequency is programmable from 200kHz to 600kHz per phase using one external resistor. In addition, IR3622A also allows the switching frequency to be synchronized to an external clock signal.

Other key features offered by this IR3622AMPbF 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 to protect against open circuit, and enhance faster response to an overvoltage event.

Parameters:

Technical/Catalog Information	IR3622AMPBF
Vendor	International Rectifier
Category	Integrated Circuits (ICs)
Type	Step-Down (Buck)
Number of Outputs	2
Voltage - Input	4.5 ~ 14.5 V
Voltage - Output	0.8 ~ 12.18 V
Current - Output	110mA
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 ~ 600kHz
Drawing Number	*
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	IR3622AMPBF IR3622AMPBF