ISL6520BCBZ-T Intersil, ISL6520BCBZ-T Datasheet

IC CTRLR PWM SYNC BUCK 8-SOIC

ISL6520BCBZ-T

Manufacturer Part Number
ISL6520BCBZ-T
Description
IC CTRLR PWM SYNC BUCK 8-SOIC
Manufacturer
Intersil
Datasheet
1.ISL6520BCBZ.pdf (10 pages)

Specifications of ISL6520BCBZ-T

Pwm Type
Voltage Mode
Number Of Outputs
1
Frequency - Max
340kHz
Duty Cycle
100%
Voltage - Supply
4.5 V ~ 5.5 V
Buck
Yes
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
No
Operating Temperature
0°C ~ 70°C
Package / Case
8-SOIC (3.9mm Width)
Frequency-max
340kHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Single Synchronous Buck Pulse-Width
Modulation (PWM) Controller
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%.
Ordering Information
ISL6520BCB*
ISL6520BCBZ*
(Note)
ISL6520BCR*
ISL6520BCRZ*
(Note)
ISL6520BIR*
ISL6520BIRZ*
(Note)
ISL6520EVAL1 Evaluation Board
*Add “-T” suffix for tape and reel. Please refer to TB347 for details
on reel specifications.
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
NUMBER
PART
6520 BCB
6520 BCBZ 0 to +70 8 Ld SOIC
65 20BCR
65 20BCRZ 0 to +70 16 Ld 4x4 QFN
65 20BIR
65 20BIRZ -40 to +85 16 Ld 4x4 QFN
MARKING
PART
-40 to +85 16 Ld 4x4 QFN L16.4x4
®
RANGE
0 to +70 8 Ld SOIC
0 to +70 16 Ld 4x4 QFN L16.4x4
TEMP.
(°C)
1
Data Sheet
(Pb-free)
(Pb-free)
(Pb-free)
PACKAGE
M8.15
M8.15
L16.4x4
L16.4x4
DWG. #
PKG.
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Operates from +5V Input
• 0.8V to V
• Drives N-Channel MOSFETs
• Simple Single-Loop Control Design
• Fast Transient Response
• Small Converter Size
• QFN Package:
• Pb-free Plus Anneal Available (RoHS compliant)
Applications
• Power Supplies for Microprocessors
• Subsystem Power Supplies
• 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
- 0.8V Internal Reference
- ±1.5% Over Line Voltage and Temperature
- Voltage-Mode PWM Control
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Cycle
- 300kHz Fixed Frequency Oscillator
- Internal Soft Start
- 8 Ld SOIC or 16Ld 4mmx4mm QFN
- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat
- Near Chip Scale Package footprint, which improves
- PCs
- Embedded Controllers
- PCI/AGP/GTL+ Buses
- ACPI Power Control
- SSTL-2 and DDR SDRAM Bus Termination Supply
No Leads - Package Outline
PCB efficiency and has a thinner profile
All other trademarks mentioned are the property of their respective owners.
July 23, 2007
Copyright © Intersil Americas Inc. 2003, 2005, 2007. All Rights Reserved
|
IN
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Output Range
ISL6520B
FN9083.3

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ISL6520BCBZ-T Summary of contents

Page 1

... PWM duty cycles range from 0% to 100%. Ordering Information TEMP. PART PART RANGE NUMBER MARKING (°C) PACKAGE ISL6520BCB* 6520 BCB SOIC ISL6520BCBZ* 6520 BCBZ SOIC (Note) (Pb-free) ISL6520BCR* 65 20BCR 4x4 QFN L16.4x4 ISL6520BCRZ* 65 20BCRZ 4x4 QFN (Note) (Pb-free) ISL6520BIR* 65 20BIR - 4x4 QFN L16 ...

Page 2

Pinouts ISL6520B (8 LD SOIC) TOP VIEW BOOT 1 UGATE 2 GND 3 LGATE 4 Block Diagram + 0. COMP/SD 20μA Typical Application 5V R PULLUP SHUTDOWN R OFFSET 2 ISL6520B 8 PHASE 7 COMP/ ...

Page 3

... Thermal Information Thermal Resistance SOIC Package (Note 7.0V (DC) QFN Package (Notes 2, 3 Maximum Junction Temperature (Plastic Package +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 SYMBOL TEST CONDITIONS I VCC POR f ISL6520BC, VCC = 5V OSC ISL6520BI, VCC = 5V Δ ...

Page 4

Functional Pin Description VCC This pin provides the bias supply for the ISL6520B, as well as the lower MOSFET’s gate. Connect a well-decoupled 5V supply to this pin. FB This pin is the inverting input of the internal error amplifier. ...

Page 5

ISL6520B. If there is nowhere for this current to go, such as to other distributed loads on the V rail, through a voltage limiting protection CC device, or other methods, the capacitance ...

Page 6

The modulator transfer function is the small-signal transfer function This function is dominated OUT E/A Gain and the output filter (L and break frequency at F and a zero at ...

Page 7

Output Inductor Selection The output inductor is selected to meet the output voltage ripple requirements and minimize the converter’s response time to the load transient. The inductor value determines the converter’s ripple current and the ripple voltage is a function ...

Page 8

ISL6520B may be circumvented by these MOSFETs if they have large parasitic impedences and/or capacitances that would inhibit the gate of the MOSFET from being discharged below it’s threshold level before the complementary MOSFET is ...

Page 9

Small Outline Plastic Packages (SOIC) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - -C- α 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined in the ...

Page 10

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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