ISL6402 Data Sheet November 8, 2004 FN9123.3 300kHz Dual, 180 Out-of-Phase, Step- Features Down PWM and Single Linear Controller Wide Input Supply Voltage Range . 4.5V to 24V The ISL6402 is a high-performance, triple-output controller Three Independently Programmable Output Voltages optimized for converting wall adapter, battery or network Switching Frequency . 300kHz intermediate bus DC input supplies into the system supply voltages required for a wide variety of applications. Each Out of Phase PWM Controller Operation output is adjustable down to 0.8V. The two PWMs are - Reduces Required Input Capacitance and Power o synchronized 180 out of phase reducing the RMS input Supply Induced Loads current and ripple voltage. No External Current Sense Resistor The ISL6402 incorporates several protection features. An - Uses Lower MOSFETs r DS(ON) adjustable overcurrent protection circuit monitors the output Bidirectional Frequency Synchronization for current by sensing the voltage drop across the lower Synchronizing Multiple ISL6402s MOSFET. Hiccup mode overcurrent operation protects the DC-DC components from damage during output Programmable Soft-Start overload/short circuit conditions. Each PWM has an Extensive circuit protection functions independent logic-level shutdown input (SD1 and SD2). - PGOOD A single PGOOD signal is issued when soft-start is complete -UVLO on both PWM controllers and their outputs are within 10% of - Overcurrent the set point and the linear regulator output is greater than - Overtemperature 75% of its setpoint. Thermal shutdown circuitry turns off the - Independent Shutdown for Both PWMs device if the junction temperature exceeds +150C. Excellent Dynamic Response - Voltage Feed-Forward with Current Mode Control Ordering Information QFN Packages: TEMP. PKG. PART NUMBER RANGE (C) PACKAGE DWG. - QFN - Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Package Outline ISL6402IR -40 to 85 28 Ld 5x5 QFN L28.5x5 - Near Chip Scale Package footprint, which improves ISL6402IR-T 28 Ld 5x5 QFN Tape & Reel L28.5x5 PCB efficiency and has a thinner profile ISL6402IR-TK 28 Ld 5x5 QFN Tape & Reel L28.5x5 Pb-Free Available (RoHS Compliant) ISL6402IRZ (Note) -40 to 85 28 Ld 5x5 QFN L28.5x5 (Pb-free) Applications ISL6402IRZ-T 28 Ld 5x5 QFN Tape & Reel L28.5x5 (Note) (Pb-free) Power Supplies with Multiple Outputs ISL6402IRZ-TK 28 Ld 5x5 QFN Tape & Reel L28.5x5 (Note) (Pb-free) xDSL Modems/Routers ISL6402IV -40 to 85 28 Ld TSSOP M28.173 DSP, ASIC, and FPGA Power Supplies ISL6402IV-T 28 Ld TSSOP Tape & Reel M28.173 Set-Top Boxes ISL6402IV-TK 28 Ld TSSOP Tape & Reel M28.173 Dual Output Supplies for DSP, Memory, Logic, P Core ISL6402IVZ (Note) -40 to 85 28 Ld TSSOP M28.173 and I/O (Pb-free) Telecom Systems ISL6402IVZ-T (Note) 28 Ld TSSOP Tape & Reel M28.173 (Pb-free) ISL6402IVZ-TK (Note) 28 Ld TSSOP Tape & Reel M28.173 (Pb-free) NOTE: Intersil Pb-free products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020C. CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 321-724-7143 Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2004. All Rights Reserved All other trademarks mentioned are the property of their respective owners.ISL6402 Pinouts ISL6402 (TSSOP) ISL6402 (QFN) TOP VIEW TOP VIEW LGATE2 1 28 LGATE1 BOOT2 2 27 BOOT1 UGATE2 3 26 UGATE1 28 27 26 25 24 23 22 PHASE2 4 25 PHASE1 PHASE2 ISEN1 1 21 ISEN2 5 24 ISEN1 ISEN2 2 20 PGND PGOOD 6 23 PGND VCC 5V 7 22 SD1 PGOOD 3 19 SD1 SD2 8 21 SS1 VCC 5V 4 18 SS1 SS2 9 20 SGND 19 OCSET1 5 17 SGND OCSET2 10 SD2 11 18 FB1 FB2 SS2 6 16 OCSET1 SGND 12 17 SGND OCSET2 7 15 FB1 VIN 13 16 GATE3 SYNC 14 15 FB3 8 9 10 11 12 13 14 FN9123.3 2 November 8, 2004 FB2 UGATE2 SGND BOOT2 VIN LGATE2 SYNC LGATE1 FB3 BOOT1 GATE3 UGATE1 SGND PHASE1