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TPS62231-Q1 Datasheet(PDF) 1 Page - Texas Instruments

No. de pieza TPS62231-Q1
Descripción Electrónicos  3-MHz Ultra-Small Step-Down Converter
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

TPS62231-Q1 Datasheet(HTML) 1 Page - Texas Instruments

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V
IN
GND
V
OUT
C2
L1
Totalarea
islessthan
12mm²
CIN
2.2 µF
VIN
2.05 V to 6 V
COUT
4.7 µF
VOUT
1.8 V
L
1 µH or 2.2 µH
TPS62231-Q1
VIN
EN
MODE
SW
FB
GND
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
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.
TPS62231-Q1, TPS622314-Q1
SLVSB63A – DECEMBER 2011 – REVISED MARCH 2016
TPS62231x-Q1 3-MHz Ultra-Small Step-Down Converter in 1 × 1.5 SON Package
1
1 Features
1
Qualified for Automotive Applications
Up to 3.8-MHz Switch Frequency
Up to 94% Efficiency
Output Peak Current up to 500 mA
Excellent AC and Transient Load Regulation
High PSRR (up to 90 dB)
Small External Output-Filter Components 1
μH
and 4.7
μF
VIN range from 2.05 V to 6 V
Optimized Power Save Mode For Low Output-
Ripple Voltage
Forced PWM Mode Operation
Typical 22-
μA Quiescent Current
100% Duty Cycle for Lowest Dropout
Small 1 × 1.5 × 0.6-mm3 SON Package
12-mm2 Minimum Solution Size
Supports 0.6-mm Maximum Solution Height
Soft Start With 100-
μs (Typical) Start-Up Time
2 Applications
Advanced Driver-Assistance System (ADAS)
Front Camera, Rear View Camera
Surround View
Blind-Spot Monitoring
Automotive Telematics, eCall, and Tolling
Space-Optimized Automotive and Industrial Power
Systems
3 Description
The TPS6223x-Q1 device family is a high-frequency,
synchronous step-down DC-DC converter ideal for
space-optimized
automotive
and
industrial
applications. The device supports up to 500-mA
output current and allows the use of tiny and low-cost
chip inductors and capacitors.
With a wide input-voltage range of 2.05 V to 6 V, the
device can be powered by a preregulated voltage rail
or Li-Ion batteries with extended voltage range. Two
different fixed-output voltage versions are available at
1.5 V and 1.8 V.
The TPS6223x-Q1 series features switch frequency
up to 3.8 MHz. At medium to heavy loads, the
converter operates in PWM mode and automatically
enters Power Save Mode operation at light load
currents to maintain high efficiency over the entire
load current range.
Because
of
its
excellent
PSRR
and
AC
load
regulation performance, the device is also suitable to
replace linear regulators to obtain better power
conversion efficiency.
The Power Save Mode in TPS6223x-Q1 reduces the
quiescent current consumption down to 22
μA during
light load operation. It is optimized to achieve very
low output voltage ripple even with small external
component and features excellent AC load regulation.
For noise-sensitive applications, the device can be
forced to PWM Mode operation over the entire load
range by pulling the MODE pin high. In the shutdown
mode, the current consumption is reduced to less
than 1
μA. The TPS6223x-Q1 is available in a 1-mm
× 1.5-mm2 6-pin SON package.
Device Information(1)
PART NUMBER
OUTPUT
VOLTAGE
FREQUENCY
TPS62231-Q1
1.8 V
3 MHz
TPS622314-Q1
1.5 V
3 MHz
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
Small PCB Layout Size


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