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LM2830 データシート(PDF) 1 Page - Texas Instruments

部品番号 LM2830
部品情報  LM2830/-Q1 High-Frequency 1.0-A Load Step-Down DC-DC Regulator
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

LM2830 データシート(HTML) 1 Page - Texas Instruments

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GND
FB
EN
VIN
SW
VIN = 5V
C1
R3
D1
L1
R2
R1
C2
C3
VO = 3.3V @ 1.0A
LM2830
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LM2830, LM2830-Q1
SNVS454E – AUGUST 2006 – REVISED DECEMBER 2014
LM2830/-Q1 High-Frequency 1.0-A Load Step-Down DC-DC Regulator
1 Features
3 Description
The
LM2830
regulator
is
a
monolithic,
high-
1
LM2830Z-Q1 and LM2830X-Q1 in the SOT-23
frequency, PWM step-down DC-DC converter in a 5-
Package are Automotive-Grade Products that are
pin SOT-23 and a 6-Pin WSON package. The device
AEC-Q100 Grade 1 Qualified (–40°C to +125°C
provides all the active functions to provide local DC-
Operating Junction Temperature)
DC conversion with fast transient response and
Space-Saving SOT-23 Package
accurate regulation in the smallest possible PCB
area. With a minimum of external components, the
Input Voltage Range of 3.0 V to 5.5 V
LM2830 regulator is easy to use. The ability to drive
Output Voltage Range of 0.6 V to 4.5 V
1.0-A loads with an internal 130-m
Ω PMOS switch
1.0-A Output Current
using state-of-the-art 0.5-µm BiCMOS technology
High Switching Frequencies
results in the best power density available. The world-
class control circuitry allows on-times as low as 30
1.6 MHz (LM2830X)
ns, thus supporting exceptionally high frequency
3.0 MHz (LM2830Z)
conversion over the entire 3-V to 5.5-V input
130-m
Ω PMOS Switch
operating range down to the minimum output voltage
of 0.6 V. Switching frequency is internally set to 1.6
0.6-V, 2% Internal Voltage Reference
MHz, or 3.0 MHz, allowing the use of extremely small
Internal Soft-Start
surface-mount inductors and chip capacitors. Even
Current Mode, PWM Operation
though the operating frequency is high, efficiencies
up to 93% are easy to achieve. External shutdown is
Thermal Shutdown
included, featuring an ultra-low standby current of 30
Overvoltage Protection
nA. The LM2830 regulator uses current-mode control
and
internal
compensation
to
provide
high-
2 Applications
performance
regulation
over
a
wide
range
of
operating
conditions.
Additional
features
include
Local 5-V to Vcore Step-Down Converters
internal soft-start circuitry to reduce inrush current,
Core Power in HDDs
pulse-by-pulse current limit, thermal shutdown, and
Set-Top Boxes
output overvoltage protection.
USB Powered Devices
Device Information(1)
DSL Modems
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Automotive
SOT (5)
2.90 mm × 1.60 mm
LM2830
WSON (6)
3.00 mm × 3.00 mm
LM2830-Q1
SOT (5)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
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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同様の説明 - LM2830_15

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