TPS5410_15 Datasheet, PDF (1/30 Pages) Texas Instruments – TPS5410 1-A, Wide Input Range, Step-Down Converter

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TPS5410
SLVS675D – AUGUST 2006 – REVISED DECEMBER 2014
TPS5410 1-A, Wide Input Range, Step-Down Converter
1 Features
•1 Wide Input Voltage Range: 5.5 V to 36 V
• Up to 1-A Continuous (1.2-A Peak) Output Current
• High Efficiency Up to 95% Enabled by 110-mΩ
Integrated MOSFET Switch
• Wide Output Voltage Range: Adjustable Down to
1.22 V with 1.5% Initial Accuracy
• Internal Compensation Minimizes External Parts
Count
• Fixed 500-kHz Switching Frequency for Small
Filter Size
• Improved Line Regulation and Transient
Response by Input Voltage Feed-Forward
• System Protected by Overcurrent Limiting,
Overvoltage Protection and Thermal Shutdown
• –40°C to 125°C Operating Junction Temperature
Range
• Available in Small 8-Pin SOIC Package
2 Applications
• Consumer: Set-Top Box, DVD, LCD Displays
• Industrial and Car Audio Power Supplies
• Battery Chargers, High-Power LED Supply
• 12-V/24-V Distributed Power Systems
3 Description
The TPS5410 is a high-output-current PWM
converter that integrates a low-resistance, high-side,
N-channel MOSFET. Included on the substrate with
the listed features is a high performance voltage error
amplifier that provides tight voltage regulation
accuracy under transient conditions; an undervoltage-
lockout circuit to prevent start-up until the input
voltage reaches 5.5 V; an internally set slow-start
circuit to limit inrush currents; and a voltage feed-
forward circuit to improve the transient response.
Using the ENA pin, shutdown supply current is
reduced to 18 μA typically. Other features include an
active high enable, overcurrent limiting, overvoltage
protection and thermal shutdown. To reduce design
complexity and external component count, the
TPS5410 feedback loop is internally compensated.
The TPS5410 device is available in an easy to use 8-
pin SOIC package. TI provides evaluation modules
and software tools to aid in quickly achieving high-
performance power supply designs to meet
aggressive equipment development cycles.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS5410D
SOIC (8)
3.91 mm x 4.90 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
VIN
VIN
PH
TPS5410
NC BOOT
NC
VOUT
Efficiency vs Output Current
100
95
90
ENA VSENSE
GND
85
V_I = 20 V
V_O = 12 V
80
f_s = 500 kHz
T_A = 25^oC
75
0 0.2 0.4 0.6 0.8 1 1.2 1.4
IO - Output Current - A
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.