ISL6455EVAL1Z Intersil, ISL6455EVAL1Z Datasheet
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ISL6455EVAL1Z
Specifications of ISL6455EVAL1Z
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ISL6455EVAL1Z Summary of contents
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... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 All other trademarks mentioned are the property of their respective owners. ISL6455, ISL6455A FN9196.0 (typical) for LDO2 (VCO supply) RMS | Intersil (and design registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved ...
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Pinout Typical Application Schematic 3.3V R1 10k Re FB_PWM Rf PG_PWM 33nF C2 3.3V R3 PG_LDO 10k NOTE: All capacitors are ceramic. 2 ISL6455, ISL6455A ISL6455, ISL6455A (QFN) TOP VIEW SGND FB_LDO2 2 3 ...
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Functional Block Diagram 10nF CT RESET RESET 3.3V 10k POR PG_LDO CONTROL EN_LDO GND_LDO SHUTDOWN VIN VIN RTN SGND SOFT- COMPENSATION START FB_PWM EA COMPENSATION 750kHz OSCILLATOR EN POWER GOOD PWM V OUT UVLO PWM REFERENCE 0.45V SYNC EN 10k ...
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Absolute Maximum Ratings (Note 1) Supply Voltage _LDO GND -0.3V to +6.0V CC Max Continuous Output Current . . . . . . . . . ...
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Electrical Specifications Recommended operating conditions unless otherwise noted. V 5.0V for the ISL6455A, Compensation Capacitors = 33nF for LDO1 and LDO2. T values are at T PARAMETER Efficiency Soft-Start Time OSCILLATOR Oscillator Frequency Frequency Synchronization Range (f SYNC SYNC High ...
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Electrical Specifications Recommended operating conditions unless otherwise noted. V 5.0V for the ISL6455A, Compensation Capacitors = 33nF for LDO1 and LDO2. T values are at T PARAMETER ENABLE (EN and (EN_LDO) EN High Level Input Voltage EN Low Level Input ...
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PG_LDO Timing Diagram UVLO V PG VFB_LDO PG_LDO THRESHOLD VOLTAGE PG_LDO OUTPUT OUTPUT UNDEFINED NOTE the minimum input voltage for a valid PG_LDO ISL6455, ISL6455A V UVLO RISING MAX ...
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Pin Descriptions PVCC - Positive supply for the power (internal FET) stage of the PWM section. SGND - Analog ground for the PWM. All internal control circuits are referenced to this pin The PWM controller is enabled when ...
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The error amplifier sets the threshold for the PWM comparator. The high side switch is turned off when the sensed inductor current reaches this threshold. After a minimum dead time preventing shoot through current, the ...
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Integrator Circuitry Both ISL6455 LDO Regulators use external 33nF compensation capacitors for minimizing load and line regulation errors and for lowering output noise. When the output voltage shifts due to varying load current or input voltage, the integrator capacitor voltage ...
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The DC resistance of the inductor will influence directly the efficiency of the converter. Therefore, an inductor with lowest DC resistance should be selected for highest efficiency. In order to avoid saturation of the inductor, the inductor should ...
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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 ...