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參數資料
| 型號： | EL7558DCM-T13 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | B Series/ Female Crimp |
| 中文描述： | 9 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | HSOP-28 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 351K |
| 代理商： | EL7558DCM-T13 |
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
2001 Elantec Semiconductor, Inc.
E
L
75
58
B
C
General Description
The EL7558BC is an adjustable synchronous DC:DC switching regu-
lator optimized for a 5V input and 1.0V-3.8V output. By combining
integrated NMOS power FETS with a HSOP package the EL7558BC
can supply up to 8A continuous output current without the use of
external power devices or externally attached heat sinks, thereby min-
imizing design effort and overall system cost.
On-chip resistorless current sensing is used to achieve stable, highly
efficient, current-mode control. The EL7558BC 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 3.50V 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 moni-
tors 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 EL7558BC is available in the 28-pin HSOP package and is speci-
fied for operation over the -40°C to +85°C temperature range.
Connection Diagram
Manufactured under U.S. Patents No. 5,723,974 and No. 5,793,126
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
20
19
18
17
24
23
22
21
EL7558BC
28
27
26
25
FB1
VSS
VHI
LX
VSSP
VIN
VDD
COSC
CSLOPE
CREF
TEST
VSSP
VCC2DET
OUTEN
OT
VSSP
CP
FB2
C2V
C4
C8
C7
D1
C10
L1
C11
R1
C 6
R5
R6
C3
0.22F
20
2.5H
1mF
220pF
330pF
0.1F
1F
39.2
0.1F
5.1
C9
660F
VOUT
D2
D3
C 5
1F
R4
R3
100
150
Connect to VSSP for
external feedback
PWRGD
VIN
C3, C4, C5, C6, C7 C8 - ceramic
C5, C11 - ceramic or tantalum
C9 - Sprague 293D337X96R3 2X330F
C10 - Sprague 293D337X96R3 3X330F
L1 - Pulse Engineering, PE-53681
D1 - D4: BAT54S fast diode
1F
C12
D4*
(Optional)
D4 Required for EL7558ACM only
C12 = 1F
Features
EL7558C/EL7558AC pin-
compatible
Improved temperature and voltage
ranges
8A 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
Ordering Information
Part No
Package
Tape &
Reel
Outline #
EL7558BCM
28-Pin HSOP
-
MDP0042
EL7558BCM-T13
28-Pin HSOP
13”
MDP0042
EL7558BC
Integrated Adjustable 8 Amp Synchronous Switcher
A
pr
il
27
,2
00
1
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