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TPS54262MPWPREP Datasheet(PDF) 1 Page - Texas Instruments

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Part # TPS54262MPWPREP
Description  2-A 60-V Step-Down DC-DC Converter With Low I(q) and Voltage Supervisor
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54262MPWPREP Datasheet(HTML) 1 Page - Texas Instruments

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background image
VIN
EN
Cdly
GND
OV_TH
COMP
VSENSE
PH
V
Reg
VBATT
SS
SYNC
LPM
VIN
BOOT
Rslew
RT/CLK
VReg
R1
R4
R6
C1
C3
C4
C5
L
D1
D2
C7
R9
C8
R11
R10
RST_TH
TPS54262
RST
RESET
R8
R7
C2
C6
R5
R2
R3
R12
Copyright © 2016, Texas Instruments Incorporated
0
10
20
30
40
50
60
70
80
90
0.05
0.5
1
1.5
2
ILoad - Load Current - A
VIN = 14 V
VIN = 7 V
V
= 5 V
f
= 500 kHz
L = 22 µH
C = 100 µF
Rslew = 30 k
T = 25°C
Reg
sw
A
W
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
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.
TPS54262-EP
SLVSDP3 – DECEMBER 2016
TPS54262-EP 2-A 60-V Step-Down DC-DC Converter
With Low I(q) and Voltage Supervisor
1
1 Features
1
Asynchronous Switch Mode Regulator
Qualified for Automotive Applications
3.6-V to 48-V Operating Range, Withstands
Transients up to 60 V
2-A Maximum Load Current
50-µA Typical Quiescent Current
200-kHz to 2.2-MHz Switching Frequency
0.8 V ± 1.5% Voltage Reference
High-Voltage Tolerant Enable Input
Soft Start on Enable Cycle
Slew Rate Control on Internal Power Switch
Low-Power Mode for Light-Load Conditions
Programmable Delay for Power-On Reset
External Compensation for Error Amplifier
Reset Function Filter Time for Fast Negative
Transients
Programmable Overvoltage, Undervoltage Output
Monitor
Thermal Sensing and Shutdown
Switch Current Limit Protection
Short Circuit and Overcurrent Protection of FET
Junction Temperature Range: –55°C to 150°C
20-Pin HTSSOP PowerPAD™ Package
Supports Defense, Aerospace, and Medical
Applications:
Controlled Baseline
One Assembly/Test Site
One Fabrication Site
Available in Extended (–55°C to 125°C)
Temperature Range
Extended Product Life Cycle
Extended Product-Change Notification
Product Traceability
2 Applications
Automotive Telematics and eCall
Automotive Infotainment and Cluster
Head Unit
Navigation
Display
3 Description
The TPS54262-EP device is a 60-V, 2-A step-down
switch-mode power supply with a low-power mode
and a programmable voltage supervisor with an
integrated NMOS switching FET. Integrated input
voltage line feed forward topology improves line
transient
regulation
of
the
voltage
mode
buck
regulator. The regulator has a cycle-by-cycle current
limit. The device also features low-power mode
operation under light-load conditions which reduces
the supply current to 50 µA (typical). By pulling the
EN pin low, the supply shutdown current is reduced
to 1 µA (typical).
An open-drain reset signal indicates when the
nominal output drops below the reset threshold set by
an external resistor divider network. The output
voltage start-up ramp is controlled by a soft-start
capacitor. There is an internal undervoltage shutown
which is activated when the input supply ramps down
to 2.6 V. The device features a short circuit protection
circuit, which protects the device during overload
condition
and
also
has
a
thermal
shutdown
protection.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS54262-EP
HTSSOP (20)
6.50 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Typical Converter Efficiency


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