4A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator
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概览
简介
The ISL8014 is a high efficiency, monolithic, synchronous step-down DC/DC converter that can deliver up to 4A continuous output current from a 2. 7V to 5. 5V input supply. It uses a current control architecture to deliver very low duty cycle operation at high frequency with fast transient response and excellent loop stability. The ISL8014 integrates a pair of low ON-resistance P-Channel and N-Channel internal MOSFETs to maximize efficiency and minimize external component count. The 100% duty-cycle operation allows less than 400mV dropout voltage at 4A output current. High 1MHz pulse-width modulation (PWM) switching frequency allows the use of small external components and SYNC input enables multiple ICs to synchronize out of phase to reduce ripple and eliminate beat frequencies. The ISL8014 can be configured for discontinuous or forced continuous operation at light load. Forced continuous operation reduces noise and RF interference while discontinuous mode provides high efficiency by reducing switching losses at light loads. Fault protection is provided by internal hiccup mode current limiting during short circuit and overcurrent conditions, an output over voltage comparator and over-temperature monitor circuit. A power good output voltage monitor indicates when the output is in regulation. The ISL8014 is offered in a space saving 4x4 QFN lead free package with exposed pad lead frames for low thermal. The ISL8014 offers a 1ms Power-Good (PG) timer at power-up. When shutdown, ISL8014 discharges the output capacitor. Other features include internal soft-start, internal compensation, overcurrent protection, and thermal shutdown. The ISL8014 is offered in a 16 Ld 4mmx4mm QFN package with 1mm maximum height. The complete converter occupies less than 0. 4in2 area.
特性
- High Efficiency Synchronous Buck Regulator with up to 97% Efficiency
- Power-Good (PG) Output with a 1ms Delay
- 2.7V to 5.5V Supply Voltage
- 3% Output Accuracy Over-Temperature/Load/Line
- 4A Output Current
- Pin Compatible to ISL8013
- Start-up with Pre-Biased Output
- Internal Soft-Start - 1ms
- Soft-Stop Output Discharge During Disabled
- 35µA Quiescent Supply Current in PFM Mode
- Selectable Forced PWM Mode and PFM Mode
- External Synchronization up to 4MHz
- Less than 1µA 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 4mmx4mm QFN
- Pb-Free (RoHS Compliant)
应用
应用
- 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
文档
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| PDF 1.70 MB | 数据手册 | |
| PDF 5.51 MB 日文 | 手册 | |
| PDF 603 KB | End Of Life Notice | |
| PDF 592 KB | 应用文档 | |
| PDF 49 KB | 产品变更通告 | |
| PDF 33 KB | Product Advisory | |
| PDF 509 KB | 应用文档 | |
| PDF 397 KB | 应用文档 | |
| PDF 483 KB | 手册 - 开发工具 | |
| PDF 650 KB | 应用文档 | |
| PDF 387 KB | 应用文档 | |
| PDF 349 KB | 应用文档 | |
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设计和开发
软件与工具
软件与工具
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Software type
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公司
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| iSim:PE Offline Simulation Tool iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
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Simulator | 瑞萨电子 |
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模型
ECAD 模块
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| QFN | Tube | 750 | ||
| QFN | Reel | 6000 |
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