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參數(shù)資料
| 型號： | EL7556B |
| 廠商： | Intersil Corporation |
| 英文描述： | Integrated Adjustable 6 Amp Synchronous Switcher |
| 中文描述： | 綜合可調6安培同步切換 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大小： | 199K |
| 代理商： | EL7556B |
1
FN7292
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. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
EL7556B
Integrated Adjustable 6 Amp
Synchronous Switcher
The EL7556B is an adjustable
synchronous DC:DC switching
regulator optimized for a 5V input and
1.0V-3.8V output. By combining integrated NMOS power
FETs with a fused-lead package, the EL7556B can supply
up to 6A continuous output current without the use of
external power devices or discrete heat sinks, thereby
minimizing design effort and overall system cost.
On-chip resistorless current sensing is used to achieve
stable, highly efficient, current-mode control. The EL7556B
also incorporates the VCC2DET function to directly interface
with the Intel P54 and P55 microprocessors. Depending on
the state of VCC2DET, the output voltage is internally preset
to 3.5V or a user-adjustable voltage using two external
resistors. In both internal and external feedback modes the
active-high PWRGD output indicates when the regulator
output is within ±10% of the programmed voltage. An on-
board sensor monitors die temperature (OT) for over-
temperature conditions and can be connected directly to
OUTEN to provide automatic thermal shutdown. Adjustable
oscillator frequency and slope compensation allow added
flexibility in overall system design.
The EL7556B is available in a 28-pin SO package and is
specified for operation over the full -40°C to +85°C
temperature range.
Pinout
EL7556B
(28-PIN SO)
TOP VIEW
Features
EL7556/EL7556A Pin-compatible
Improved temperature and voltage ranges
6A continuous load current
Precision internal 1% reference
1.0V to 3.8V output voltage
Internal power MOSFETs
>90% efficiency
Synchronous switching
Adjustable slope compensation
Over-temperature indicator
Pulse-by-pulse current limiting
Operates up to 1MHz
1.5% typical output accuracy
Adjustable oscillator with sync
Remote enable/disable
Intel P54- and P55-compatible
VCC2DET interface
Internal soft-start
Applications
PC motherboards
Local high power CPU supplies
5V to 1.0V DC:DC conversion
Portable electronics/instruments
P54 and P55 regulators
GTL + Bus power supply
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
20
19
18
17
24
23
22
21
28
27
26
25
FB1
VSS
VHI
LX
LX
LX
LX
VSSP
VSSP
VSSP
VSSP
VIN
VIN
VDD
COSC
CSLOPE
CREF
TEST
VSSP
VSSP
VCC2DET
OUTEN
OT
VSSP
CP
FB2
C2V
C4
C8
C7
D1
C10
L1
C11
0.22μF
R1
C 6
R5
R6
C3
20
2.5μH
1mF
39pF
220pF
0.1μF
1μF
39.2
0.1μF
5.1
C9
660μF
D2
D3
C 5
1μF
R4
R3
100
150
Connect to VSSP for
external feedback
Manufactured under U.S. Patents No. 5,723,974 and No. 5,793,126
PWRGD
V
IN
V
IN
1μF
C3, C4, C5, C6, C7 C8 - ceramic
C5, C11 - ceramic or tantalum
C9 - Sprague 293D337X96R3 2X330μF
C10 - Sprague 293D337X96R3 3X330μF
L1 - Pulse Engineering, PE-53681
D1-D4: BAT54S fast diode
D4 Required for EL7556ACM Only
D4*
C12
(Optional)
V
1V*(1+R3/R4)
C12 - 1μF
Ordering Information
PART NUMBER
PACKAGE
TAPE &
REEL
PKG. NO.
EL7556BCM
28-Pin SO
-
MDP0027
EL7556BCM-T13
28-Pin SO
13”
MDP0027
Data Sheet
October 5, 2001
FOR UPDATED INFORMATION SEE
EL7556D
相關PDF資料 |
PDF描述 |
|---|---|
| EL7556BCM | Integrated Adjustable 6 Amp Synchronous Switcher |
| EL7556D | Integrated Adjustable 6 Amp Synchronous Switcher(集成MOSFET的6A同步轉換器) |
| EL7556DCM-T13 | B Series/ Female Solder |
| EL7556DCMZ-T13 | HANKING TIE 3.9 NATURAL |
| EL7556DCM | Integrated Adjustable 6 Amp Synchronous Switcher |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| EL7556BC | 制造商:ELANTEC 制造商全稱:ELANTEC 功能描述:Integrated Adjustable 6 Amp Synchronous Switcher |
| EL7556BCM | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Integrated Adjustable 6 Amp Synchronous Switcher |
| EL7556BCM-T13 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Integrated Adjustable 6 Amp Synchronous Switcher |
| EL7556CM | 制造商:Intersil Corporation 功能描述: |
| EL7556D | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Integrated Adjustable 6 Amp Synchronous Switcher |
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