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7440650022 データシート(PDF) 1 Page - Texas Instruments

部品番号 7440650022
部品情報  3.5 V to 36 V Wide-VIN Synchronous 2.1 MHz Step-Down Converters
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

7440650022 データシート(HTML) 1 Page - Texas Instruments

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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.
LM53602, LM53603
SNVSAR0 – NOVEMBER 2016
LM53603 (3 A), LM53602 (2 A) 3.5 V to 36 V Wide-VIN Synchronous 2.1 MHz Step-Down
Converters
1
1 Features
1
3-A or 2-A Maximum Load Current
Input Voltage Range From 3.5 V to 36 V:
Transients to 42 V
Adjustable Output Voltage From 3.3 V to 10 V
2.1-MHz Fixed Switching Frequency
±2% Output Voltage Tolerance
–40°C to 150°C Junction Temperature Range
1.7-µA Shutdown Current (Typical)
24-µA Input Supply Current at No Load (Typical)
Reset Output With Filter and Delay
Automatic Light Load Mode for Improved
Efficiency
User-Selectable Forced PWM Mode (FPWM)
Built-In Loop Compensation, Soft-Start, Current
Limit, Thermal Shutdown, UVLO, and External
Frequency Synchronization
Thermally Enhanced 16-Lead Package:
5 mm × 4.4 mm × 1 mm
2 Applications
Industrial Power Supplies in Building and Factory
Automation
Battery Operated Devices
Low-noise and Low-EMI Applications
Optical Communication Systems
3 Description
The LM53603 and LM53602 buck regulators are
specifically
designed
for
12-V
industrial
and
automotive
applications,
providing
an
adjustable
output voltage from 3.3 V to 10 V at 3 A or 2 A, from
an input voltage of up to 36 V. Advanced high-speed
circuitry allows the device to regulate from an input of
up to 20 V, while providing an output of 5 V at a
switching frequency of 2.1 MHz. The innovative
architecture allows the device to regulate a 3.3-V
output from an input voltage of only 3.5 V. All aspects
of this product are optimized for the industrial and
automotive customer. An input voltage range up to 36
V, with transient tolerance up to 42 V, eases input
surge protection design. An open-drain reset output,
with filtering and delay, provides a true indication of
system status. This feature negates the requirement
for an additional supervisory component, saving cost
and board space. Seamless transition between PWM
and PFM modes, along with a no-load operating
current of only 24 µA, ensures high efficiency and
superior transient response at all loads.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM53603
LM53602
HTSSOP (16)
5.00 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Industrial Power Supply With 5-V, 3-A Output


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