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ISL6520ACR-T

Description
降压 稳压器 正 输出 降压 - DC DC 切换控制器 IC 16-QFN(4x4)
Categorysemiconductor    Multi-channel IC (PMIC)   
File Size670KB,12 Pages
ManufacturerRenesas Electronics Corporation
Websitehttps://www.renesas.com/
Download Datasheet Parametric View All

ISL6520ACR-T Overview

降压 稳压器 正 输出 降压 - DC DC 切换控制器 IC 16-QFN(4x4)

ISL6520ACR-T Parametric

Parameter NameAttribute value
category
MakerRenesas Electronics Corporation
series-
PackageTape and Reel (TR)
Output typetransistor driver
Functionstep down
Output configurationjust
Topologystep down
output stage1
Voltage - Power supply (Vcc/Vdd)4.5V ~ 5.5V
Frequency - Switch300kHz
Duty cycle (maximum)100%
Synchronous rectifieryes
Clock synchronizationnone
serial interface-
Control characteristicsPhase control
Operating temperature0°C ~ 70°C(TA)
Installation typesurface mount type
Package/casing16-VQFN Exposed Pad
Supplier device packaging16-QFN(4x4)
Number of outputs1
Basic product numberISL6520A
DATASHEET
ISL6520A
Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
The ISL6520A makes simple work out of implementing a
complete control and protection scheme for a DC/DC
stepdown converter. Designed to drive N-Channel
MOSFETs in a synchronous buck topology, the ISL6520A
integrates the control, output adjustment, monitoring and
protection functions into a single 8 Lead package.
The ISL6520A 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/ms slew rate which enables high converter
bandwidth for fast transient performance. The resulting
PWM duty cycles range from 0% to 100%.
Protection from overcurrent conditions is provided by
monitoring the r
DS(ON)
of the upper MOSFET to inhibit PWM
operation appropriately. This approach simplifies the
implementation and improves efficiency by eliminating the
need for a current sense resistor.
FN9016
Rev 6.00
Dec 10, 2009
Features
• Operates from +5V Input
• 0.8V to V
IN
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
• Lossless, Programmable Overcurrent Protection
- Uses Upper MOSFET’s r
DS(ON)
• Small Converter Size
- 300kHz Fixed Frequency Oscillator
- Internal Soft-Start
- 8 Ld SOIC or 16 Ld 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 (RoHS Compliant)
Pinouts
ISL6520A
(8 LD SOIC)
TOP VIEW
BOOT 1
UGATE 2
GND 3
LGATE 4
8 PHASE
7 COMP/SD
6 FB
5 VCC
Applications
• 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
ISL6520A
(16 LD QFN)
TOP VIEW
PHASE
14
NC
NC
NC
13
12 NC
11 COMP/OCSET
10 NC
9
5
LGATE
6
NC
7
VCC
8
NC
FB
16
BOOT
UGATE
GND
NC
1
2
3
4
15
• Memory Supplies
• Personal Computer Peripherals
• Industrial Power Supplies
• 5V-Input DC/DC Regulators
• Low-Voltage Distributed Power Supplies
FN9016 Rev 6.00
Dec 10, 2009
Page 1 of 12
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