The ISL78236ARZ is a dual output synchronous buck regulator designed for point-of-load applications, providing independent outputs of 3A each, with a maximum combined output of 6A in current sharing mode. It operates at a switching frequency of 2.5MHz, achieving efficiencies up to 95%. The input voltage range is from 2.8V to 6V, making it suitable for various power sources including single Li+ cells and regulated 3V/5V buses. The regulator can output voltages as low as 1.2V and features internal MOSFETs to minimize external components. Key protective features include peak current limiting, hiccup mode short circuit protection, reverse overcurrent protection, and over-temperature shutdown. The device is AEC-Q100 qualified, ensuring reliability in automotive applications, and operates within a temperature range of -40¬8C to +105¬8C. The ISL78236ARZ is packaged in a compact 24-lead QFN format, occupying less than 1.5cm¬= of board space, which is advantageous for space-constrained designs.
The ISL78236 is a dual output, 3A/3A, integrated FET buck regulator for point-of-load power applications. The supply voltage range is from 2.8V to 6V, allowing for the use of a single Li+ cell, three NiMH cells, or a regulated 3V/5V bus input. It is optimized for regulating output voltages down to 1.2V. Each channel provides an output current up to 3A, which can be combined to form a single 6A output in current sharing mode. The two channels operate 180° out of phase to reduce input RMS current and EMI.
The ISL78236 integrates a pair of low ON-resistance P-channel and N-channel internal MOSFETs to maximize efficiency and minimize external component count. It can operate up to 100% duty cycle to maximize operating life as battery voltage drops out. When supplying 3A on each channel, the 100% duty cycle operation limits the dropout voltage to less than 250mV. Other features include internal digital soft-start, independent channel enable for power sequencing, overcurrent protection, and thermal shutdown.
The ISL78236 is offered in a 24 Ld 4mmx4mm QFN package with 1mm maximum height. The complete converter occupies less than 1.5cm2 area.
The ISL78236 is AEC - Q100 qualified and is rated for the automotive temperature range (-40°C to +105°C).
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| Renesas Electronics Corporation | DigiKey | Shenzhen Shengyu Electronics Technology Limited | VAST STOCK CO., LIMITED | Lingto Electronic Limited | Quarktwin Technology Ltd. | |
|---|---|---|---|---|---|---|
| Product Category | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators |
| Product Number | ISL78236ARZ | ISL78236ARZ-ND | ISL78236ARZ | ISL78236ARZ | ISL78236ARZ | ISL78236ARZ |
| Product Name | Dual 3A Current Sharing 2.5MHz High Efficiency Synchronous Buck Regulator | Voltage Regulators - DC DC Switching Regulators | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators | Switching Voltage Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators | Voltage Regulators - DC DC Switching Regulators |
| Configuration / Function | Buck | Buck | ||||
| Package Type | Other; QFN | Other; 24-VFQFN Exposed Pad | Other; 24-VFQFN Exposed Pad | |||
| Special Features | Synchronous Rectification | Multiple Outputs; Synchronous Rectification | ||||
| Output Voltage | 1.2 to 6 volts | 1.2 to 6 volts | 1.2 volts | 1.2 to 6 volts | ||
| IOUT | 6 amps | 3 amps | 3 amps | 3 amps | 3 amps |
