ISL78264ARZ-T

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Renesas Electronics Corporation

AUTOMOTIVE DUAL SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED DRIVERS

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ISL78264ARZ-T

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Renesas Electronics Corporation

AUTOMOTIVE DUAL SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED DRIVERS

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Description Specifications Series Pricing CAD Documents

Description

General part information

ISL78264 Series

The ISL78264 is a dual buck controller that can operate across a wide VINrange of 3.75V to 42V. It is designed to support wide duty-cycle operation for switching frequencies from 200kHz up to 2.2MHz. To mitigate EMI, it supports synchronization to an external clock or programmable spread spectrum clocking. Its current-mode modulator is ideally suited to tolerate severe line transients. Also, the ISL78264 supports dropout operation and low 25ns on-time to operate through automotive cranking and load dump pulses.

The ISL78264 integrates robust MOSFET drivers and readily supports step-down applications requiring high output currents in normal operation. For applications that must also sustain extremely low power, always-on operation, its energy conservation mode can reduce operating current to 6µA. Integrated feedback for VOUT1 is provided for 3.3V or 5V applications to eliminate the current otherwise flowing in external feedback resistors. An automatic switchover to an external supply is also supported to maximize efficiency. A blocking diode is activated after startup to prevent the external supply from back-biasing a low input voltage at VIN.

The ISL78264 is qualified to AEC-Q100 Grade 1, specified to operate across an ambient temperature range of -40 °C to 125 °C, and is available in a 5mm x 5mm, 32 Ld WFQFN (Wettable Flank) package.

Technical Specifications

Parameters and characteristics for this part

Specification	ISL78264ARZ-T

Clock Sync	Yes
Control Features	Power Good, Enable, Current Limit, Soft Start, Frequency Control, Sync
Duty Cycle (Max)	98.75 %
Frequency - Switching (Max)	2.2 MHz
Frequency - Switching (Min)	200 kHz
Function	Step-Down
Grade	Automotive
Mounting Type	Wettable Flank, Surface Mount
Number of Outputs	2
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	32-VFQFN Exposed Pad
Package Length	5 mm
Package Name	32-QFN
Package Width	5 mm
Qualification	AEC-Q100
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Supply (Vcc/Vdd) Maximum	42 V
Voltage - Supply (Vcc/Vdd) Minimum	3.75 V

ISL78264 Series

Automotive Dual Synchronous Buck Controller with Integrated Drivers

Part	Output Type	Package Width	Package Name	Package Length	Topology	Grade	Package / Case	Operating Temperature (Max)	Operating Temperature (Min)	Output Phases	Output Configuration	Function	Frequency - Switching (Max)	Frequency - Switching (Min)	Duty Cycle (Max)	Clock Sync	Qualification	Synchronous Rectifier	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Mounting Type	Number of Outputs	Control Features	Contents	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Non-Isolated Output Count	Total Output Count	Regulator Topology	Utilized IC / Part	Main Purpose	Voltage - Output (Range 1) Maximum	Voltage - Output (Range 2) Minimum	Voltage - Output (Range 1) Minimum	Voltage - Output (Range 2) Maximum	Voltage - Output (Range {idx}) Minimum	Voltage - Output (Range {idx}) Maximum	Voltage - Output (Min)	Voltage - Output (Max)
Renesas Electronics Corporation ISL78264ARZ	Transistor Driver	5 mm	32-QFN	5 mm	Buck	Automotive	32-VFQFN Exposed Pad	125 °C	-40 °C	1	Positive	Step-Down	2.2 MHz	200 kHz	98.75 %	Yes	AEC-Q100	Yes	3.75 V	42 V	Surface Mount Wettable Flank	2	Current Limit Enable Frequency Control Power Good Soft Start Sync
Renesas Electronics Corporation ISL78264ARZ-T	Transistor Driver	5 mm	32-QFN	5 mm	Buck	Automotive	32-VFQFN Exposed Pad	125 °C	-40 °C	1	Positive	Step-Down	2.2 MHz	200 kHz	98.75 %	Yes	AEC-Q100	Yes	3.75 V	42 V	Surface Mount Wettable Flank	2	Current Limit Enable Frequency Control Power Good Soft Start Sync
Renesas Electronics Corporation ISL78264EVAL1Z	Non-Isolated																							Board	3.75 V	42 V	2 count	2	Buck	ISL78264	DC/DC Step Down	5 V	0.8 V	0.8 V	32 V	0.8 V	5 V 32 V	0.8 V	5 V 32 V
Renesas Electronics Corporation ISL78264ARZ-T7A	Transistor Driver	5 mm	32-QFN	5 mm	Buck	Automotive	32-VFQFN Exposed Pad	125 °C	-40 °C	1	Positive	Step-Down	2.2 MHz	200 kHz	98.75 %	Yes	AEC-Q100	Yes	3.75 V	42 V	Surface Mount Wettable Flank	2	Enable Soft Start

Pricing

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CAD

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Documents

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Datasheet

ISL78264ARZ-T | Datasheet

ISL78264 Datasheet