ISL6520B Single Synchronous Buck Pulse-Width Modulation (PWM) controller

ISL6520B Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

VIN (min) (V)	2.5
VIN (max) (V)	5
VOUT (min) (V)	0.8
VOUT (max) (V)	5
IOUT (max) (A)	20
VBIAS (V)	5

The ISL6520B makes simple work out of implementing a complete control scheme for a DC/DC stepdown converter. Designed to drive N-channel MOSFETs in a synchronous buck topology, the ISL6520B integrates the control, output adjustment and monitoring functions into a single 8 Lead package.

The ISL6520B provides simple, single feedback loop, voltage-mode control with fast transient response. The output voltage can be precisely regulated to as low as 0.8V, with a maximum tolerance of ±1.5% over-temperature and line voltage variations. A fixed frequency oscillator reduces design complexity, while balancing typical application cost and efficiency.

The error amplifier features a 15MHz gain-bandwidth product and 8V/μs slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty cycles range from 0% to 100%

ISL6520B 特点

Operates from +5V Input
0.8V to VIN Output Range
- 0.8V Internal Reference
- ±1.5% Over Line Voltage and Temperature
Drives N-Channel MOSFETs
Simple Single-Loop Control Design
- Voltage-Mode PWM Control
Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Cycle
Small Converter Size
- 300kHz Fixed Frequency Oscillator
- Internal Soft Start
- 8 Ld SOIC or 16Ld 4mmx4mm QFN
QFN Package:
- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves PCB efficiency and has a thinner profile
Pb-free Plus Anneal Available (RoHS compliant)

ISL6520B 应用

Power Supplies for Microprocessors
- PCs
- Embedded Controllers
Subsystem Power Supplies
- PCI/AGP/GTL+ Buses
- ACPI Power Control
- SSTL-2 and DDR SDRAM Bus Termination Supply
Cable Modems, Set-Top Boxes, and DSL Modems
DSP and Core Communications Processor Supplies
Memory Supplies
Personal Computer Peripherals
Industrial Power Supplies
5V-Input DC/DC Regulators
Low-Voltage Distributed Power Supplies

ISL6520B 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ISL6520BCBZ	量产	民用级	8 Ld SOIC	1
ISL6520BCBZ-T	量产	民用级	8 Ld SOIC T+R	1
ISL6520BCRZ	Coming Soon	民用级	16 Ld QFN	3
ISL6520BCRZ-T	Coming Soon	民用级	16 Ld QFN T+R	3
ISL6520BIRZ	Coming Soon	工业级	16 Ld QFN	3
ISL6520BIRZ-T	Coming Soon	工业级	16 Ld QFN T+R	3
ISL6520BCB	停产	民用级	8 Ld SOIC	1	N/A
ISL6520BCB-T	停产	民用级	8 Ld SOIC T+R	1	N/A
ISL6520BCR	停产	民用级	16 Ld QFN	1	N/A
ISL6520BCR-T	停产	民用级	16 Ld QFN T+R	1	N/A
ISL6520BIR	停产	工业级	16 Ld QFN	1	N/A
ISL6520BIR-T	停产	工业级	16 Ld QFN T+R	1	N/A