參數(shù)資料
型號(hào)： EL7464CRE-T13
英文描述： Monolithic 4 Amp DC:DC Step-down Regulator
中文描述： 單片4安培直流：DC降壓穩(wěn)壓器
文件頁(yè)數(shù)： 1/18頁(yè)
文件大?。?/td> 1196K
代理商： EL7464CRE-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
64
C
General Description
The EL7564C is an integrated, full-featured synchronous step-down
regulator with output voltage adjustable from 1.0V to 3.8V. It is capa-
ble of delivering 4A continuous current at up to 95% efficiency. The
EL7564C operates at a constant frequency pulse width modulation
(PWM) mode, making external synchronization possible. Patented on-
chip resistorless current sensing enables current mode control, which
provides cycle-by-cycle current limiting, over-current protection, and
excellent step load response. The EL7564C features power tracking,
which makes the start-up sequencing of multiple converters possible.
A junction temperature indicator conveniently monitors the silicon die
temperature, saving the designer time on the tedious thermal charac-
terization. The minimal external components and full functionality
make this EL7564C ideal for desktop and portable applications.
The EL7564C is specified for operation over the -40°C to +85°C tem-
perature range.
Typical Application Diagrams
Manufactured Under U.S. Patent No. 5,7323,974
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
EL7564CM
(20-Pin SO)
20
19
18
17
0.1F
390pF
0.22F
22
2.2nF
330F
VIN
5V
VOUT
3.3V,
4A
2.37k
1k
330F
0.22F
4.7H
VREF
SGND
COSC
VDD
VTJ
PGND
VIN
STP
STN
EN
FB
PG
VDRV
VHI
LX
PGND
2.2nF
C5
C4
R4
C3
C2
C1
C6
D1
L1
C7
R2
C10
R1
Typical Application Diagrams continued on page 3
Features
Integrated synchronous MOSFETs
and current mode controller
4A continuous output current
Up to 95% efficiency
4.5V to 5.5V input voltage
Adjustable output from 1V to 3.8V
Cycle-by-cycle current limit
Precision reference
±0.5% load and line regulation
Adjustable switching frequency to
1MHz
Oscillator synchronization
possible
Internal soft start
Over voltage protection
Junction temperature indicator
Over temperature protection
Under voltage lockout
Multiple supply start-up tracking
Power good indicator
20-pin SO (0.300”) package
28-pin HTSSOP package
Applications
DSP, CPU Core and IO Supplies
Logic/Bus Supplies
Portable Equipment
DC:DC Converter Modules
GTL + Bus Power Supply
Ordering Information
Part No
Package
Tape &
Reel
Outline #
EL7564CM
20-Pin SO
-
MDP0027
EL7564CM-T13
20-Pin SO
13”
MDP0027
EL7564CRE
28-Pin HTSSOP
-
MDP0048
EL7564CRE-T7
28-Pin HTSSOP
7”
MDP0048
EL7464CRE-T13
28-Pin HTSSOP
13”
MDP0048
EL7564C
Monolithic 4 Amp DC:DC Step-down Regulator
O
ct
ob
er
3,
20
01
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