ISL6521CBZ Intersil, ISL6521CBZ Datasheet
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ISL6521CBZ
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ISL6521CBZ Summary of contents
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... MOSFET’ The linear regulator outputs are DS(ON) monitored via the FB pins for undervoltage events. Ordering Information PART NUMBER TEMP. RANGE (°C) ISL6521CBZ SOIC (Note) (Pb-free) ISL6521CBZ SOIC (Note) (Pb-free) ISL6521IBZ - SOIC (Note) (Pb-free) ISL6521IBZ-T - SOIC ...
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Block Diagram VCC EA3 - DRIVE3 + EA4 x 0.70 + DRIVE4 - + 0.8V - FB4 INHIBIT/SOFT-START + DRIVE2 - EA2 FB2 GND OSCILLATOR FB3 - + UV3 + - UV4 SOFT-START AND FAULT LOGIC + - UV2 + ...
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Typical Applications High Output Current PWM Converter With Simple Triple Linears Regulators +5V V OUT2 2.5V 120mA + C OUT2 Rs2 V OUT3 1.8V 120mA + C OUT3 Rs3 V OUT4 3.3V 120mA + C OUT4 Rs4 High Output Current ...
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... Operating Conditions Supply Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±10% Ambient Temperature Range ISL6521CBZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C ISL6521IBZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to 85°C Junction Temperature Range -40°C to 125°C CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied ...
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Functional Pin Descriptions VCC (Pin 11) Provide a well decoupled 5V bias supply for the IC to this pin. This pin also provides the gate bias charge for the lower MOSFET controlled by the PWM section of the IC, as ...
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As the internal soft-start voltage increases, the pulse-width on the PHASE pin increases to reach its steady-state duty cycle at time T2. Also at time T2, the error amplifier references of the linear controllers, ...
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The OC trip point varies with MOSFET’s r temperature variations. To avoid overcurrent tripping in the normal operating load range, determine the R resistor from the equation above with: 1. The maximum r at the highest junction temperature. DS(ON) 2. ...
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V DRIVER1 OSC PWM COMP SYNC - DRIVER + ∆ V OSC E/A 0.8V ERROR AMP DETAILED COMPENSATION COMPONENTS COMP ISL6521 0.8V FIGURE 5. VOLTAGE-MODE BUCK CONVERTER ...
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The diode should be placed as close to the FB pin as possible to minimize stray capacitance to this pin. Upon turn-off of the pull-up device, the respective output undergoes a soft-start cycle, bringing the output ...
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Component Selection Guidelines Output Capacitor Selection The output capacitors for each output have unique requirements. In general, the output capacitors should be selected to meet the dynamic load regulation requirements. Additionally, the PWM converters require an output capacitor to filter ...
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Transistors Selection/Considerations The ISL6521 can employ external transistors. Two N-channel MOSFETs are used in the synchronous-rectified buck topology of PWM converter. The linear controllers can each drive an NPN bipolar transistor as a pass element. All these ...
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... Sumida CDEP134 15A 1.6µH Sumida CDEP134 20A 0.5µH Pulse PG0006.601 12 ISL6521 Intersil’s portfolio of multiple output controllers continues to expand with new selections to better fit our customer’s ), the needs. Refer to our website for updated information: I/O ) www.intersil.com MEMORY + C1 ...
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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 ...