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LM2734Z bảng dữ liệu(PDF) 1 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  Thin SOT 1-A Load Step-Down DC-DC Regulator
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LM2734Z bảng dữ liệu(HTML) 1 Page - Texas Instruments

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LM2734
VIN
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EN
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LM2734Z, LM2734Z-Q1
SNVS334F – JANUARY 2005 – REVISED JANUARY 2016
LM2734Z/-Q1 Thin SOT 1-A Load Step-Down DC-DC Regulator
1 Features
3 Description
The
LM2734Z
regulator
is
a
monolithic,
high-
1
Qualified for Automotive Applications
frequency,
PWM
step-down
DC–DC
converter
AEC-Q100 Qualified With the Following Results:
assembled in a thick 6-pin SOT and a WSON non-
Device Temperature Grade 1: –40°C to 125°C
pullback package. The device provides all the active
Ambient Operating Temperature Range
functions to provide local DC–DC conversion with fast
transient response and accurate regulation in the
Device HBM ESD Classification Level 2
smallest possible PCB area.
Device CDM ESD Classification Level C6
With a minimum of external components and online
6-pin SOT Package, or 6-Pin WSON Package
design support through WEBENCH™, the LM2734Z
3.0-V to 20-V Input Voltage Range
is easy to use. The ability to drive 1-A loads with an
0.8-V to 18-V Output Voltage Range
internal 300-m
Ω NMOS switch using state-of-the-art
0.5-µm BiCMOS technology results in the best power
1-A Output Current
density available. The world class control circuitry
3-MHz Switching Frequency
allows for ON-times as low as 13 ns, thus supporting
300-m
Ω NMOS Switch
exceptionally high-frequency conversion over the
entire 3-V to 20-V input operating range down to the
30-nA Shutdown Current
minimum output voltage of 0.8 V. Switching frequency
0.8-V, 2% Internal Voltage Reference
is internally set to 3 MHz, allowing the use of
Internal Soft-Start
extremely small surface mount inductors and chip
Current-Mode, PWM Operation
capacitors. Even though the operating frequency is
very high, efficiencies up to 85% are easy to achieve.
Thermal Shutdown
External shutdown is included, featuring an ultra-low
standby current of 30 nA. The LM2734Z uses current-
2 Applications
mode control and internal compensation to provide
DSL Modems
high-performance regulation over a wide range of
operating
conditions.
Additional
features
include
Local Point of Load Regulation
internal soft-start circuitry to reduce inrush current,
Battery-Powered Devices
pulse-by-pulse current limit, thermal shutdown, and
USB-Powered Devices
output overvoltage protection.
Automotive
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
WSON (6)
3.00 mm × 3.00 mm
LM2734Z
SOT (6)
1.60 mm × 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit
Efficiency vs Load Current
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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