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PDF ISL6401 Data sheet ( Hoja de datos )
| Número de pieza | ISL6401 | |
| Descripción | Synchronizing Current Mode PWM | |
| Fabricantes | Intersil Corporation | |
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Data Sheet
October 21, 2015
ISL6401
FN9007.8
Synchronizing Current Mode PWM for
Subscriber Line Interface Circuits (SLICs)
The ISL6401 adjustable frequency, low power, pulse width
modulating (PWM) current mode controller is designed for a
wide range of DC/DC conversion applications including
boost, flyback, and isolated output configurations. The
device is optimized to provide a high performance, low-cost
solution for Ringing SLIC (RSLIC) ring and talk power
supplies. An integrated inverter allows for easy design of
negative voltage regulation circuits with a minimal amount of
external components. Internal soft-start minimizes start-up
stress without any external components. Peak current mode
control effectively handles Ring trip transients and provides
inherent overcurrent protection.
This advanced BiCMOS design features low operating
current, adjustable operating output frequency (50kHz to
600kHz), internal soft-start and a SYNC input that allows the
oscillator to be locked to an external clock for noise sensitive
applications. DC/DC conversion efficiency is optimized by
use of a low current sense voltage. A logic level shutdown
input is included, which reduces supply current to 55A in
the shutdown mode.
Pinouts
ISL6401 (SOIC)
TOP VIEW
SD 1
SYNC 2
CT 3
COMP 4
FB 5
NFB OUT 6
NFB IN 7
14 VCC
13 PVCC
12 GATE
11 PGND
10 GND
9 CS
8 NC
ISL6401 (QFN)
TOP VIEW
SYNC
CT
COMP
FB
NO
16 15 14
1
LO342NGER5RECO6MMEND7ED
O1R3SUP1P2ORTPEGDND
11 PGND
10 GND
9 CS
8
Features
• Positive and Negative Output Regulation
• Starting Supply Current . . . . . . . . . . . . . . . . . 100A (typ.)
• Quiescent Current . . . . . . . . . . . . . . . . . . . . . . 55A (typ.)
• Output Frequency Range. . . . . . . . . . . . 50kHz to 600kHz
• External Clock Synchronization
• Fast Transient Response with Peak Current Mode Control
• Internal Soft-Start
• Drives N-Channel MOSFET
• Logic Level Shutdown
• Leading Edge Blanking
• 1% Tolerance Voltage Reference Over Line and
Temperature
• Pb-Free Available (RoHS Compliant)
Applications
• VoIP/VoDSL Ringer and Off-Hook Voltage Generators
• Multi-Output Flyback Supplies
• Cable and DSL Modems
• Set-Top Boxes
• Wireless Local Loops
• LMDH and FTTH Supplies
• Boost Regulators
• Routers
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a trademark of Intersil Americas LLC.
Copyright © Intersil Americas LLC. 2001-2005, 2015. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL6401
Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
schematic. VCC = +5.0V ±10%, TA = -40 to 85°C (Note 10), Typical values are at TA = 25°C (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Start to Stop Hysteresis
0.2 0.5 0.8
V
SOFT-START - DIGITAL
COMP Rise Time
Rise from 0.5V to REF -1V
- 2048 clk -
OSCILLATOR
Gate Output Frequency
Ct = 560pF
90 100 108 kHz
Gate Output Frequency Range
50 - 600 kHz
Temperature Stability
- 5 -%
Sync. Frequency Range
1.1 Times the natural switching
frequency.
-
- 1.2 MHz
Sync Input HIGH
3.5 - - V
Sync Input LOW
- - 1.5 V
Minimum Sync. Input Pulse Duty Cycle
- 20 - %
OUTPUT
GATE Low Level
-
0.2 0.5
V
GATE High VSAT
Rise Time
C load = 1500pF
4.4 4.9 5.5
V
- 35 - ns
Fall Time
C load = 1500pF
- 40 - ns
NOTES:
10. Specifications at -40°C are guaranteed by design, not production tested.
11. This is the VCC current consumed when the device is active but not switching. Does not include gate drive current.
Typical Performance Curves
120
100
80
60
40
20
0 -40
-20 25
60
TEMPERATURE (°C)
85
FIGURE 1. FREQUENCY vs TEMPERATURE
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
-40
-20 25
60
TEMPERATURE (°C)
85
FIGURE 2. REFERENCE VOLTAGE vs TEMPERATURE
5 FN9007.8
October 21, 2015
5 Page 
ISL6401
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to the web to make
sure that you have the latest revision.
DATE
REVISION
CHANGE
October 21, 2015
FN9007.8
Updated the Ordering Information table on page 2.
Added Revision History and About Intersil sections.
Updated Package Outline Drawing M14.15 to the latest revision. Changes are as follows:
-Add land pattern and moved dimensions from table onto drawing
About Intersil
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, please see the respective product
information page found at www.intersil.com.
You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask.
Reliability reports are also available from our website at www.intersil.com/support.
11 FN9007.8
October 21, 2015
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ISL6401.PDF ] | |
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