ISL78205AVEZ INTERSIL [Intersil Corporation], ISL78205AVEZ Datasheet
ISL78205AVEZ
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ISL78205AVEZ Summary of contents
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Buck Controller with Integrated High-Side MOSFET ISL78205 The ISL78205 is a synchronous buck controller with a 90mΩ high side MOSFET and low side driver integrated. The ISL78205 supports a wide input voltage range from 3V to 40V. Regarding the ...
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Pin Configuration Functional Pin Description PIN NAME PIN # PGND 1 This pin is used as the ground connection of the power flow, including the driver. BOOT 2 This pin provides bias voltage to the high-side MOSFET driver. A bootstrap ...
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... Ordering Information PART NUMBER (Notes ISL78205AVEZ 78205 AVEZ NOTES: 1. Add “-T*” suffix for tape and reel. Please refer to 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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Block Diagram VCC VIN BIAS LDO POWER-ON SGND RESET EN SYNC FS OSCILLATOR SOFT-START VCC LOGIC 5 µ PGOOD CONTROL LOGIC OCP, OVP, OTP VOLTAGE MONITOR SLOPE COMPENSATION + + 0.8V REFERENCE COMPARATOR EA FB COMP VIN (x2) ...
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Typical Application Schematic I - Synchronous Buck PGOOD EN SYNC VCC ILIMIT SS FS DGND SGND Typical Application Schematic II - Non-Synchronous Buck PGOOD EN SYNC VCC ISL78205 ILIMIT SS FS DGND SGND 5 ISL78205 VIN BOOT ISL78205 PHASE LGATE ...
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Absolute Maximum Ratings VIN, PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Electrical Specifications Refer to “Block Diagram” on page 4 and Typical Application Schematics on page 5. Operating Conditions Unless Otherwise Noted 12V operating temperature range, -40°C to +105°C. (Continued) PARAMETER OSCILLATOR PWM Frequency MIN ON ...
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Electrical Specifications Refer to “Block Diagram” on page 4 and Typical Application Schematics on page 5. Operating Conditions Unless Otherwise Noted 12V operating temperature range, -40°C to +105°C. (Continued) PARAMETER OV Non-Latching-off Trip Point OV ...
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Typical Performance Curves 100 12V 0.0 0.5 1.0 LOAD CURRENT (A) FIGURE 3. EFFICIENCY, SYNCHRONOUS BUCK, 500kHz +25°C A 4.970 4.968 4.966 ...
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Typical Performance Curves V OUT PHASE 20V/DIV 2ms/DIV FIGURE 9. V 36V, PRE-BIASED START- 20mV/DIV (5V OFFSET) OUT PHASE 20V/DIV 5µs/div FIGURE 11. SYNCHRONOUS BUCK 100mV/DIV (5V OFFSET) OUT I 1A/DIV OUT PHASE 20V/DIV 1ms/div FIGURE ...
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Typical Performance Curves FIGURE 15. NON-SYNCHRONOUS BUCK, FORCE PWM MODE ISL78205 (Continued) V 10mV/DIV (5V OFFSET) OUT PHASE 10V/DIV 5µs/div 12V FN7926.0 September 22, 2011 ...
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Functional Description Initialization Initially, the ISL78205 continually monitors the voltage at the EN pin. When the voltage on the EN pin exceeds its rising threshold, the internal LDO will start-up to build up VCC. After Power-On Reset (POR) circuits detect ...
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Oscillator and Synchronization The oscillator has a default frequency of 500kHz with the FS pin connected to VCC, or ground, or floating. The frequency can be programmed to any frequency between 200kHz and 2.2MHz with a resistor from the FS ...
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Input Capacitors Depending upon the system input power rail conditions, the aluminum electrolytic type capacitor is normally needed to provide the stable input voltage and restrict the switching frequency pulse current in small areas over the input traces for better ...
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Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you have the latest revision. DATE REVISION September 22, 2011 FN7926.0 Initial Release ...
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HTSSOP (Heat-Sink TSSOP) Family 0. (N/2)+ TOP VIEW B D1 EXPOSED THERMAL PAD BOTTOM VIEW e C SEATING PLANE 0. LEADS SIDE VIEW SEE DETAIL “X” END ...