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ISL8510 Dataheets PDF



Part Number ISL8510
Manufacturers Renesas
Logo Renesas
Description Dual Output Controller
Datasheet ISL8510 DatasheetISL8510 Datasheet (PDF)

DATASHEET ISL8510 Dual Output Controller with 1A Standard Buck PWM and LDO FN6516 Rev 2.00 December 15, 2008 The ISL8510 is a high-performance, dual output controller that provides a single, high frequency power solution for a variety of point of load applications. The ISL8510 integrates a 1A standard buck PWM controller and switching MOSFET with one 500mA LDO. The PWM controller in the ISL8510 drives an internal switching N-Channel power MOSFET and requires an external Schottky diode to gene.

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DATASHEET ISL8510 Dual Output Controller with 1A Standard Buck PWM and LDO FN6516 Rev 2.00 December 15, 2008 The ISL8510 is a high-performance, dual output controller that provides a single, high frequency power solution for a variety of point of load applications. The ISL8510 integrates a 1A standard buck PWM controller and switching MOSFET with one 500mA LDO. The PWM controller in the ISL8510 drives an internal switching N-Channel power MOSFET and requires an external Schottky diode to generate an output voltage from 0.6V to 20V. The integrated power switch is optimized for excellent thermal performance up to 1A of output current. The standard buck input voltage range supports a fixed 5V or variable 5.5V to 25V range. The PWM regulator switches at a fixed frequency of 500kHz and utilizes simple voltage mode control with input voltage feed forward to provide flexibility in component selection and minimize solution size. Protection features include overcurrent, undervoltage, and thermal overload protection integrated into the IC. The ISL8510 power-good signal output indicates loss of regulation on the PWM output. The ISL8510 features one adjustable LDO regulator using internal PMOS transistors as pass devices. The enable pin (EN_LDO) controls the LDO output. A single power-good signal output indicates loss of regulation on the LDO output. Independent overcurrent and thermal fault shutdown monitors are integrated into the “LDO Regulator Capacitor Selection” on page 16. The ISL8510 is available in a small 4mmx4mm Quad Flat No Lead (QFN) package. Features • Standard Buck Controller with Integrated Switching Power MOSFET + 1 LDO • Integrated Boot Diode • Input Voltage Range - Fixed 5V ±10% - Variable 5.5V to 25V • PWM Output Voltage Adjustable from 0.6V to 20V with Continuous Output Current up to 1A • Voltage Mode Control with Voltage Feed Forward • Fixed 500kHz Switching Frequency • Externally Adjustable Soft-Start Time • Output Undervoltage Protection • LDO Adjustable Options - LDO, 0.6V to 4.2V . . . . . . . . . . . . . . . . . . . . . . . 500mA • Individual Enable Inputs • Two PGOOD Outputs (PWM and LDO) • Overcurrent Protection • Thermal Overload Protection • Internal 5V LDO regulator • Pb-Free (RoHS Compliant) Applications • General Purpose • WLAN Cards-PCMCIA, Cardbus32, MiniPCI CardsCompact Flash Cards • Hand-Held Instruments FN6516 Rev 2.00 December 15, 2008 Page 1 of 21 ISL8510 Pinout ISL8510 (24 LD QFN) TOP VIEW CC PG_PWM FB_PWM COMP SS EN 24 23 22 21 20 19 FB_LDO 1 18 VIN VOUT 2 17 VIN VIN_LDO 3 GND 4 25 GND 16 PHASE 15 PHASE GND 5 14 BOOT NC 6 13 PVCC 7 8 9 10 11 12 Ordering Information PART NUMBER (Note) PART TEMP. MARKING RANGE (°C) PACKAGE (Pb-free) PKG. DWG. # ISL8510IRZ* 85 10IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D *Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is 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-020. NC PG_LDO EN_LDO GND GND VCC FN6516 Rev 2.00 December 15, 2008 Page 2 of 21 ISL8510 Typical Application Schematics R5 5.11k LDO R6 5.11k 1.2V C6 22µF VOUT1 C7 10µF C4 0.1µF FB_LDO VOUT VIN_LDO CC1 PG_PWM EN_PWM SS PWM PGOOD PWM ENABLE R2 2.21k C5 0.033µF R3 C1 301 100pF C2 10nF R4 20k C3 10pF R1 10k VOUT FB_PWM COMP ISL8510 VIN C9 10µF PHASE C10 BOOT 0.1µF 5V UNREGULATED ~2.5V L1 10µH VOUT1 C11 +3.3V 100µF PVCC VCC GND PG_LDO EN_LDO C14 1µF VIN LDO PGOOD LDO ENABLE FIGURE 1. VIN RANGE FROM 4.5V TO 5.5V FN6516 Rev 2.00 December 15, 2008 Page 3 of 21 ISL8510 Typical Application Schematics (Continued) PWM PGOOD PWM ENABLE C4 0.1µF R2 2.21k C5 0.033µF R3 C1 301 100pF C2 10nF R4 20k C3 10pF R1 10k VOUT FB_PWM COMP CC1 PG_PWM EN SS R5 5.11k LDO 1.2V R6 5.11k C6 22µF VOUT C7 10µF FB_LDO VOUT VIN_LDO ISL8510 VIN C9 10µF 5V UNREGULATED ~2.5V PHASE C10 BOOT 0.1µF L1 10µH D B340LB VOUT +3.3V C11 100µF PVCC VCC GND EN_LDO1 PG_LDO C14 1µF LDO1 ENABLE LDO PGOOD FIGURE 2. VIN RANGE FROM 5.5V TO 25V FN6516 Rev 2.00 December 15, 2008 Page 4 of 21 ISL8510 Functional Block Diagram FB COMP PVCC BOOT VCC SOFT-START CONTROL 30µA VOLTAGE MONITOR SS EN_PWM EN_LDO FAULT MONITOR VCC VIN PG_PWM LDO POWER-ON RESET MONITOR -+ -+ PWM EA OC MONITOR 0.6V REFERENCE RAMP GENERATOR VIN GATE DRIVE THERMAL MONITOR +150°C OC MONITOR OSCILLATOR POR PVCC VIN_LDO Gm REF POR FAULT LDO CONTROL LOGIC WINDOW COMP. +LDO PG_LDO VIN (x2) PHASE (x2) CC1 VIN_LDO VOUT FB_LDO GND FN6516 Rev 2.00 December 15, 2008 Page 5 of.


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