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ISL6527A の電気的特性と機能

ISL6527AのメーカーはIntersilです、この部品の機能は「Single Synchronous Buck Pulse-Width Modulation (PWM) Controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL6527A
部品説明 Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
メーカ Intersil
ロゴ Intersil ロゴ 




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ISL6527A Datasheet, ISL6527A PDF,ピン配置, 機能
Data Sheet
ISL6527, ISL6527A
September 29, 2015
FN9056.11
Single Synchronous Buck Pulse-Width
Modulation (PWM) Controller
The ISL6527, ISL6527A make simple work out of
implementing a complete control and protection scheme for
a DC/DC step-down converter. Designed to drive N-Channel
MOSFETs in a synchronous buck topology, the ISL6527,
ISL6527A integrate the control, output adjustment,
monitoring and protection functions into a single package.
The ISL6527, ISL6527A provide simple, single feedback loop,
voltage-mode control with fast transient response. The output
voltage can be regulated to as low as the provided external
reference. A fixed frequency oscillator reduces design
complexity, while balancing typical application cost and
efficiency.
The error amplifier features a 15MHz gain-bandwidth
product and 6V/µs 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 rDS(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.
Features
• Operates from 3.3V to 5V Input
• Utilizes an External Reference
• 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 rDS(ON)
• Converter Can Source and Sink Current
• Small Converter Size
- Internal Fixed Frequency Oscillator
- ISL6527: 300kHz
- ISL6527A: 600kHz
• Internal Soft-Start
• 14 Ld SOIC or 16 Ld 5x5 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)
Applications
• Power Supplies for Microprocessors
- PCs
- Embedded Controllers
• Subsystem Power Supplies
- PCI/AGP/GTL+ Busses
- ACPI Power Control
- 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
• 3.3V Input DC/DC Regulators
• Low Voltage Distributed Power Supplies
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2003-2008, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL6527A pdf, ピン配列
ISL6527, ISL6527A
Typical Application - 3.3V Input
3.3V
VIN
VREF
CIN
CPUMP
VCC
CT1 OCSET/SD
ROCSET
CBULK
CT2
CPGND
CPVOUT
ISL6527,
ISL6527A
BOOT
GND
UGATE
PHASE
REF_IN
COMP
LGATE
FB
DBOOT
CBOOT
CDCPL
CHF
Q1 LOUT
Q2 COUT
CI
RF CF
ROFFSET
RFB
VOUT
3 FN9056.11
September 29, 2015


3Pages


ISL6527A 電子部品, 半導体
ISL6527, ISL6527A
Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+7V
Absolute Boot Voltage, VBOOT . . . . . . . . . . . . . . . . . . . . . . . +15.0V
Absolute Error Amplifier Input, VEA+ . . . . . . . . . . . . . . . . . . . . +1.5V
Upper Driver Supply Voltage, VBOOT - VPHASE . . . . . . . . . . . +7.0V
Input, Output or I/O Voltage . . . . . . . . . . . GND -0.3V to VCC +0.3V
Operating Conditions
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . +3.3V ±10%
Ambient Temperature Range . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Junction Temperature Range. . . . . . . . . . . . . . . . . .-40°C to +125°C
Thermal Information
Thermal Resistance
JA (°C/W)
JC (°C/W)
SOIC Package (Note 1) . . . . . . . . . . . .
67
N/A
QFN Package (Notes 2, 3). . . . . . . . . .
35
5
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
1. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
3. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Recommended Operating Conditions, unless otherwise noted VCC = 3.3V ±5% and TA = +25°C
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX
VCC SUPPLY CURRENT
Nominal Supply
POWER-ON RESET
IBIAS
6.1 7.1 7.7
Rising CPVOUT POR Threshold
POR Commercial
4.25 4.30 4.42
Industrial
4.10 4.30 4.50
CPVOUT POR Threshold Hysteresis
0.3 0.6 0.9
OSCILLATOR
Frequency
fOSC
IC = ISL6527C, Commercial
IC = ISL6527I, Industrial
275 300 325
250 300 340
IC = ISL6527AC, Commercial
554 600 645
IC = ISL6527AI, Industrial
524 600 650
Ramp Amplitude
CHARGE PUMP
VOSC
- 1.5 -
Nominal Charge Pump Output
Charge Pump Output Regulation
VCPVOUT VVCC = 3.3V, No Load
- 5.1 -
-2-
ERROR AMPLIFIER
DC Gain
(Note 4)
- 88 -
Gain-Bandwidth Product
GBWP (Note 4)
- 15 -
Slew Rate
SR (Note 4)
-6-
Non-Inverting Input Voltage
SOFT-START
VREF_IN (Note 4)
- - 1.5
Soft-start Slew Rate
GATE DRIVERS
Commercial; VREF_IN = 1.5V
Industrial; VREF_IN = 1.5V
6.2 - 7.3
6.2 - 7.6
Upper Gate Source Current
Upper Gate Sink Current
Lower Gate Source Current
Lower Gate Sink Current
IUGATE-SRC VBOOT - VPHASE = 5V, VUGATE = 4V
IUGATE-SNK
ILGATE-SRC VVCC = 3.3V, VLGATE = 4V
ILGATE-SNK
- -1 -
-1-
- -1 -
-2-
UNITS
mA
V
V
V
kHz
kHz
kHz
kHz
VP-P
V
%
dB
MHz
V/µs
V
ms
ms
A
A
A
A
6 FN9056.11
September 29, 2015

6 Page



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部品番号部品説明メーカ
ISL6527

Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

Intersil
Intersil
ISL6527A

Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

Intersil
Intersil


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