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| 型號(hào)： | ISL6434CB |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁(yè)數(shù)： | 1/11頁(yè) |
| 文件大?。?/td> | 295K |
| 代理商： | ISL6434CB |
1
FN9007.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2002. All Rights Reserved
PRELIMINARY
ISL6401
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 over-current 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 55
μ
A in
the shutdown mode.
Features
Positive and Negative Output Regulation
Starting Supply Current . . . . . . . . . . . . . . . . . 100
μ
A (typ.)
Quiescent Current . . . . . . . . . . . . . . . . . . . . . . 55
μ
A (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
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
Ordering Information
PART NUMBER
TEMP. RANGE
(
o
C)
PACKAGE
PKG. NO.
ISL6401CB
0 to 70
14 Ld SOIC
M14.15
ISL6401IB
-40 to 85
14 Ld SOIC
M14.15
ISL6401CR
0 to 70
16 Ld MLFP
L16.4x4
ISL6401IR
-40 to 85
16 Ld MLFP
L16.4x4
Add -T suffix for tape and reel packaging.
Pinouts
ISL6401 (SOIC)
TOP VIEW
ISL6401 (MLFP)
TOP VIEW
SD
SYNC
CT
COMP
FB
NFB OUT
NFB IN
V
CC
PV
CC
GATE
PGND
GND
CS
NC
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1
3
4
15
SYNC
CT
COMP
FB
S
V
P
G
16
14
13
2
12
10
9
11
6
5
7
8
PGND
PGND
GND
CS
N
N
N
N
Data Sheet
September 2002
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