ISL9444IRZ-T7A Intersil, ISL9444IRZ-T7A Datasheet
ISL9444IRZ-T7A
Specifications of ISL9444IRZ-T7A
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ISL9444IRZ-T7A Summary of contents
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... FIGURE 1. TYPICAL APPLICATION CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 Intersil (and design trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. DS(ON) Q2 VOUT2 L2 2.2µ ...
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... Ordering Information PART NUMBER (Notes ISL9444IRZ ISL9444 IRZ NOTES: 1. Add “-T*” for tape and reel. Please refer to TB347 for details on reel specifications. 2. 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) ...
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Pin Descriptions (Continued) PIN NAME 6 EN/SS1 This pin provides an enable/disable function and soft-starting for PWM1 output. The output is disabled when the pin is pulled to GND. During start-up, a regulated 1.55µA soft-start current charges an external capacitor ...
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Pin Descriptions (Continued) PIN NAME 24 ISEN3 Current signal input for PWM3. This pin is used to monitor the voltage drop across the lower MOSFET for current loop feedback and overcurrent protection. 25 PHASE3 Phase node connection for PWM3. This ...
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Block Diagram BOOT1 VCC_5V UGATE1 PHASE1 ADAPTIVE DEAD-TIME V/I SAMPLE TIMING VCC_5V LGATE1 PGND PGND PFI + _ PF REF PFO FB1 15pF 180kΩ 1000kΩ 16kΩ + 0.7V REF ERROR AMP 1 1.55µA EN/SS1 + EN/SS1 1.3V ISEN1 ...
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Typical Application - ISL9444 C3 10µF C5 0.1µF VOUT1 +1.05V 1.0µH CO1 100µ IRF7907 C7 15.8k 470pF V R2 31.6k PGOOD1 PGOOD1 R7 100k R8 100k R9 100k VOUT2 R14 V 25.5k R15 49.9k 6 ISL9444 ...
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Typical Application - ISL9444 CIN5 CIN4 10µF 10µF C3 0.22µF RJK0332DPB VOUT1 +5.0V, 18A L1 2.2µ 330µF 330µF Q2 RJK0329DPB CFF1 4700pF R6 R16 10.7k 200 R7 1.74k +16V PGOOD2 V R14 64.9k R15 10k PFO ...
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Table of Contents Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . .-55°C to +150°C Maximum Operating Temperature . . . . . . . . . . . . . . . . . . . . -40°C to +85°C Maximum Storage Temperature .-65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 26V = 5.0V to 26V, or VCC_5V = 5V ±10%, C_VCC_5V = 4.7µF, T ...
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Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to Block Diagram on page 5 and Typical Application Schematics on pages 6 and +25°C, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C ...
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Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to Block Diagram on page 5 and Typical Application Schematics on pages 6 and +25°C, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C ...
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Typical Performance Curves of ISL9444 Evaluation Board 12V, VOUT1 = 1.05V, VOUT2 = 3.3V, VOUT3 = 1.8V unless otherwise noted. IN 33.0 32.5 32.0 31.5 31.0 30.5 30.0 -40 - TEMPERATURE (°C) FIGURE 2. SHUTDOWN ...
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Typical Performance Curves of ISL9444 Evaluation Board 12V, VOUT1 = 1.05V, VOUT2 = 3.3V, VOUT3 = 1.8V unless otherwise noted. IN 650 630 610 590 570 550 -40 - TEMPERATURE (°C) FIGURE 8. SWITCHING FREQUENCY ...
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Typical Performance Curves of ISL9444 Evaluation Board 12V, VOUT1 = 1.05V, VOUT2 = 3.3V, VOUT3 = 1.8V unless otherwise noted. IN 100 90 80 EFFICIENCY DEM (%) EFFICIENCY CCM (%) ...
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Typical Performance Curves of ISL9444 Evaluation Board 12V, VOUT1 = 1.05V, VOUT2 = 3.3V, VOUT3 = 1.8V unless otherwise noted. IN TIME @ 5ms/DIV INDUCTOR CURRENT @ 2A/DIV FIGURE 20. PWM3 START-UP. MODE = CCM, LOAD = 0A ...
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Functional Description General Description The ISL9444 integrates control circuits for three synchronous buck converters. The three synchronous bucks operate out- of-phase to substantially reduce the input ripple and thus reduce the input filter requirements. Each part has 3 independent enable/disable ...
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A resistive divider from the output to ground sets the output voltage of any PWM channel. The center point of the divider shall be connected to the FBx pin. The output voltage value is determined by Equation ...
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EMI. The typical operating curves show the synchronized 180° out-of-phase operation. Power Failure Monitor The ISL9444 has a Power-Failure Monitor that helps to monitor an additional critical voltage ...
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Schottky diode may be added from VCC_5V to the positive of the boot capacitor. RBOOT may still be necessary to lower EMI due to fast turn-on of the upper MOSFET. Power-Good Indicators The three ...
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A higher sampling current will help to stabilize the loop. Due to the current loop feedback, the modulator has a single pole response with -20dB slope at a frequency determined by the load. 1 ...
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Route all high speed switching nodes away from the control circuitry. 11. Create a separate small analog ground plane near the ...
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V is output voltage, and DV O OUT voltage allowed during the load transient. High frequency capacitors initially supply the transient current and slow the load rate-of-change seen by the bulk capacitors. The bulk filter capacitor values are generally ...
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... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. ...
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Package Outline Drawing L40.5x5B 40 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 0, 5/10 5.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( 4. 80 TYP ) ( 3.50 ) TYPICAL RECOMMENDED LAND PATTERN 24 ISL9444 A B ...