Product Summary

The IR3621M is an 2-phase / dual synchronous pwm controller with oscillator synchronization and pre-bias startup. The IR3621M IC combines a dual synchronous buck controller and drivers, providing a cost-effective, high performance and flexible solution. The IR3621M operates in 2-Phase mode to produce either 2-independent output voltages or current share single output for high current application. Applications are (1)Embedded Networking & Telecom Systems; (2)Distributed Point-of-Load Power Architectures; (3)2-Phase Power Supply; (4)Graphics Card; (5)DDR Memory Applications.

Parametrics

IR3621M absolute maximum ratings: (1)Vcc, VCL Supply Voltage: -0.5V to 16V; (2)VcH1 and VcH2 Supply Voltage : -0.5V to 25V; (3)PGOOD: -0.5V to 16V; (4)Storage Temperature Range : -55°C to 150°C; (5)Junction Temperature Range : -40°C to 150°C; (6)ESD Classification : JEDEC, JESD22-A114.

Features

IR3621M features: (1)Dual Synchronous Controller with 180! Out of Phase Operation; (2)Configurable to 2-Independent Outputs or Current Share Single Output; (3)Voltage Mode Control; (4)Current Sharing Using Inductor DCR; (5)Selectable Hiccup or Latched Current Limit using MOSFETs RDS(on)sensing; (6)Latched Over-Voltage Protection; (7)Pre-Bias Start Up; (8)Programmable Switching Frequency up to 500KHz; (9)Two Independent Soft-Starts/Shutdowns; (10)Precision Reference Voltage 0.8V; (11)Power Good Output; (12)External Frequency Synchronization; (13)Thermal Protection.

Diagrams

IR3621M pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
IR3621M
IR3621M

IC REG CTRLR BUCK PWM VM 32MLPQ
Data Sheet
0-219: $1.42
IR3621MPBF
IR3621MPBF

IC REG CTRLR BUCK PWM VM 32MLPQ
Data Sheet
Negotiable 
IR3621MTRPBF
IR3621MTRPBF
International Rectifier
DC/DC Switching Controllers
Data Sheet
0-1945: $1.34
1945-3000: $1.34
IR3621MTR
IR3621MTR

IC REG CTRLR BUCK PWM VM 32MLPQ
Data Sheet
0-3000: $1.16