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| Compact Power Supply (ISL8014IRZ) |
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The ISL8014 is a 4 A PWM controller with integrated MOSFETs. Thanks to its two low-resistance power switches, efficiency is specified as up to 97 %. The switchable PWM/PFM mode throttles the otherwise typical 1 MHz switching frequency even in standby mode, so the closed-circuit current is just 35 μA. When switched off, the output is discharged and the module needs less than 1 μA. Other integrated functions include a Power-Good output, internal compensation, a current limiter, soft-start and an overheating cutout. The external synchronisability of up to 4 MHz offers advantages for some applications. Typical areas of application are in components such as FPGAs, uCs and DSPs with operating voltages of 0.8 V or higher. |
Key Features - High Efficiency Synchronous Buck Regulator with up to 97 % Efficiency
- Power-Good (PG) Output with a 1 ms Delay
- 2.7 V to 5.5 V Supply Voltage
- 3 % Output Accuracy Over-Temperature/Load/Line
- 4 A Output Current
- Pin Compatible to ISL8013
- Start-up with Pre-Biased Output
- Internal Soft-Start - 1ms
- Soft-Stop Output Discharge During Disabled
- 35 μA Quiescent Supply Current in PFM Mode
- Selectable Forced PWM Mode and PFM Mode
- External Synchronization up to 4 MHz
- Less than 1 μA Logic Controlled Shutdown Current
- 100 % Maximum Duty Cycle
- Internal Current Mode Compensation
- Peak Current Limiting and Hiccup Mode Short Circuit Protection
- Over-Temperature Protection
- Small 16 Ld 4 mm x 4 mm QFN
Applications
- DC/DC POL Modules
- μC/μP, FPGA and DSP Power
- Plug-in DC/DC Modules for Routers and Switchers
- Portable Instruments
- Test and Measurement Systems
- Li-ion Battery Powered Devices
- Small Form Factor (SFP) Modules
- Bar Code Readers
Please note that there is an Evaluation Board available - read more in the Application Note below!
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