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TPS62050 Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce TPS62050
Description  800-mA Synchronous Step-Down Converter
Download  30 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS62050 Fiches technique(HTML) 1 Page - Texas Instruments

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IO – Output Current – mA
50
30
10
0.01
0.1
1
10
60
70
100
100
1 k
80
20
0
40
90
VI = 7.2 V,
VO = 5 V,
SYNC = L
FB
PG
VIN
8
LBO
GND
SYNC
EN
LBI
PGND
TPS62052
SW
1
6
7
3
2
9
5
4
10
Ci = 10 µF
Co = 22 µF
VO = 1.5 V / 800 mA
L1 = 10 µH
VI = 3.3 V to 10 V
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
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Community
TPS62050, TPS62051, TPS62052, TPS62054, TPS62056
SLVS432F – SEPTEMBER 2002 – REVISED JUNE 2015
TPS6205x 800-mA Synchronous Step-Down Converter
1 Features
3 Description
The TPS6205x devices are a family of high-efficiency
1
High-Efficiency Synchronous Step-Down
synchronous step-down DC-DC converters that are
Converter With up to 95% Efficiency
ideally suited for systems powered from a 1- or 2-cell
12-µA Quiescent Current (Typical)
Li-Ion battery or from a 3- to 5-cell NiCd, NiMH, or
2.7-V to 10-V Operating Input Voltage Range
alkaline battery.
Adjustable Output Voltage Range: 0.7 V to 6 V
The TPS6205x devices are synchronous pulse width
Fixed Output Voltage Options Available With
modulation (PWM) converters with integrated N- and
P-channel power MOSFET switches. Synchronous
1.5 V, 1.8 V, and 3.3 V
rectification increases efficiency and reduces external
Synchronizable to External Clock: Up to 1.2 MHz
component count. To achieve highest efficiency over
High-Efficiency Over a Wide Load Current Range
a wide load current range, the converter enters a
in Power-Save Mode
power-saving pulse frequency modulation (PFM)
mode at light load currents. Operating frequency is
100% Maximum Duty Cycle for Lowest Dropout
typically 850 kHz, allowing the use of small inductor
Low-Noise Operation in Forced Fixed-
and
capacitor
values.
The
device
can
be
Frequency PWM Operation Mode
synchronized to an external clock signal in the range
Internal Softstart
of 600 kHz to 1.2 MHz. For low noise operation, the
converter can be programmed into forced-fixed
Overtemperature and Overcurrent Protected
frequency in PWM mode. In shutdown mode, the
Available in 10-Pin Micro-Small Outline
current consumption is reduced to less than 2 µA.
Package MSOP
The TPS6205x devices are available in the 10-pin
(DGS) micro-small outline package (MSOP) and
2 Applications
operates over a free air temperature range of –40°C
to 85°C.
Cellular Phones
Organizers, PDAs, and Handheld PCs
Device Information(1)
Low-Power DSP Supplies
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Digital Cameras and Hard Disks
TPS62050
TPS62051
TPS62052
VSSOP (10)
3.00 mm × 3.00 mm
TPS62054
TPS62056
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Typical Application Schematic
Efficiency vs Output 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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