IRDC3065 Infineon

Data Sheet No. PD94703 revA IRU3065(PbF) POSITIVE TO NEGATIVE DC TO DC CONTROLLER PRODUCT DATASHEET FEATURES DESCRIPTION Generate Negative Output from +5V Input The IRU3065 controller is designed to provide solutions 1A Maximum Output Current for the applications requiring low power on board switch- 1.5MHz maximum Switching Frequency ing regulators. The IRU3065 is specifically designed Few External Components for positive to negative conversion and uses few com- Available in 6-Pin SOT-23 ponents for a simple solution. The IRU3065 operates at high switching frequency (up to 1.5MHz), resulting in APPLICATIONS smaller magnetics. The output voltage can be set by Hard Disk Drives using an external resistor divider. The stability over all Blue Laser for DVD R-W conditions is inherent with this architecture without any MR Head Bias compensation. The device is available in the standard LCD Bias 6-Pin SOT-23. GaAs FET Bias Positive-to-Negative Conversion TYPICAL APPLICATION 5V C4 D1 10uF BAT54 VDD C1 1uF Vcc C3 100pF Q1 VGATE IRLML5203 U1 D2 VOUT (-5V) IRU3065 10BQ015 Gnd L1 C6 1.2uH 10uF ISEN VSEN R1 0.1 R3 R2 R3 VREF = 5V VOUT = -VREF R2 10K 10K Figure 1 - Typical application of IRU3065 for single input voltage. PACKAGE ORDER INFORMATION Basic Part (Non Lead-Free) TA (C) DEVICE PACKAGE OUTPUT VOLTAGE 0 To 70 IRU3065CLTR 6-Pin SOT-23 (L6) Adjustable Lead-Free Part TA (C) DEVICE PACKAGE OUTPUT VOLTAGE 0 To 70 IRU3065CLTRPbF 6-Pin SOT-23 (L6) Adjustable www.irf.com 1IRU3065(PbF) ABSOLUTE MAXIMUM RATINGS Vcc ......................................................................... 7V VDD ......................................................................... 12V Operating Junction Temperature Range ..................... 0C To 125C Operating Ambient Temperature Range ..................... 0C To 70C Storage Temperature Range ...................................... -65C To +150C ESD Capability (Human Body Model) ........................ 2000V PACKAGE INFORMATION 6-PIN PLASTIC SOT-23 (L6) TOP VIEW VGATE 1 6 Vcc Gnd 2 5 VDD 3 4 ISEN VSEN JA=230 C/W ELECTRICAL SPECIFICATIONS Unless otherwise specified, these specifications apply over Vcc=5V, VDD=7V, CGATE=470pF, RSEN=0.125, RFDBK1=RFDBK2=10K (to Vcc), fs=1.2MHz, IFL=0.25A and TJ=0C to 125C. Typical values refer to TJ=25C. PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS Recommended Vcc Supply Vcc Note.1 V 4 5 Recommended VDD Supply VDD V 4 Operating Current Icc mA 3 Initial Output Voltage Accuracy Measured in application -1% 1% TJ=25 C, Vout=-5V Output Accuracy Measured in application -2% +2% over temp. Vout=-5V. Voltage Feedback Sense VVSEN V 0 Voltage Feedback Input Offset VVoff mV -10 10 Voltage Feedback Bias Current IVBIAS A 2 Peak Current Sense Voltage VIs mV 145 Min Current Sense Voltage VIs mV 50 Current Sense Bias Current IIBIAS A 2 Output Drivers Section Switching Frequency fs Note. 1 MHz 1.5 Max Output Duty Cycle Dmax % 100 Min Output Duty Cycle Dmin % 0 10% to 90% Vgate high Rise Time Tr ns 40 Fall Time Tf 90% to 10% Vgate going low ns 40 Vsens=1V. Isens from 0 to Propagation Delay from TD ns 100 250mV. Delay time between Current Sense to Output 90% of Isens to 10% of Vgate Note. 1. guarantted by design www.irf.com 2