TPS61045 Converter Datasheet

TPS61045 Datasheet, PDF, Equivalent


Part Number

TPS61045

Description

Digitally Adjustable Boost Converter

Manufacture

etcTI

Total Page 27 Pages
Datasheet
Download TPS61045 Datasheet


TPS61045
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS61045
SLVS440C – JANUARY 2003 – REVISED DECEMBER 2014
TPS61045 Digitally Adjustable Boost Converter
1 Features
1 Input Voltage Range from 1.8 to 6 V
• Output Voltage of up to 28 V Possible
• Up to 85% Efficiency
• Digitally Adjustable Output Voltage Control
• Disconnects Output From Input During Shutdown
• Switching Frequency up to 1 MHz
• No Load Quiescent Current 40 μA Typical
• Thermal Shutdown Mode
• Shutdown Current 0.1 μA Typical
• Available in Small 3-mm × 3-mm VSON Package
2 Applications
• LCD Bias Supply for Small to Medium LCD
Displays
• OLED Display Power Supply
– PDA, Pocket PC, Smart Phones
– Handheld Devices
– Cellular Phones
3 Description
The TPS61045 device is a high-frequency boost
converter with digitally-programmable output voltage
and true shutdown. During shutdown, the output is
disconnected from the input by opening the internal
input switch. This allows a controlled power-up and
power-down sequencing of the display. The output
voltage can be increased or decreased in digital
steps by applying a logic signal to the CTRL pin. The
output voltage range, as well as the output voltage
step size, can be programmed with the feedback
divider network. With a high switching frequency of
up to 1 MHz, the TPS61045 device allows the use of
small external components, and together, with the
small 8-pin VSON package, a minimum system
solution size is achieved.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
TPS61045
VSON (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VIN = 1.8 V to 6 V
C1
100 nF
Simplified Schematic
L1
4.7 mH
D1
MBR0530
C2
4.7mF
1 L SW 8
2 VIN
DO 3
5 CTRL
4
FB
6 GND PGND 7
TPS61045
R1
2.2 MW
R3
1 MW
R2
180 kW
VO
16.2 V to 18.9 V/ 10 mA
Cff
22 pF
C3
1 mF
Enable / LCD bias control
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.

TPS61045
TPS61045
SLVS440C – JANUARY 2003 – REVISED DECEMBER 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ..................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Dissipation Rating ..................................................... 4
6.6 Electrical Characteristics........................................... 5
6.7 Typical Characteristics .............................................. 6
7 Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagram ......................................... 8
7.3 Feature Description................................................... 8
7.4 Device Functional Modes........................................ 10
8 Application and Implementation ........................ 11
8.1 Application Information............................................ 11
8.2 Typical Application .................................................. 11
9 Power Supply Recommendations...................... 17
10 Layout................................................................... 17
10.1 Layout Guidelines ................................................. 17
10.2 Layout Example .................................................... 17
10.3 Thermal Considerations ........................................ 17
11 Device and Documentation Support ................. 18
11.1 Device Support...................................................... 18
11.2 Trademarks ........................................................... 18
11.3 Electrostatic Discharge Caution ............................ 18
11.4 Glossary ................................................................ 18
12 Mechanical, Packaging, and Orderable
Information ........................................................... 18
4 Revision History
Changes from Revision B (March 2009) to Revision C
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
• Updated Equation 10 ........................................................................................................................................................... 12
• Updated Equation 11 ........................................................................................................................................................... 13
2 Submit Documentation Feedback
Product Folder Links: TPS61045
Copyright © 2003–2014, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS61045 SLVS440C – JANUAR Y 2003 – REVISED DECEMBER 2014 TPS610 45 Digitally Adjustable Boost Converter 1 Features •1 Input Voltage Range f rom 1.8 to 6 V • Output Voltage of up to 28 V Possible • Up to 85% Efficie ncy • Digitally Adjustable Output Vol tage Control • Disconnects Output Fro m Input During Shutdown • Switching F requency up to 1 MHz • No Load Quiesc ent Current 40 μA Typical • Thermal Shutdown Mode • Shutdown Current 0.1 μA Typical • Available in Small 3-mm × 3-mm VSON Package 2 Applications LCD Bias Supply for Small to Medium L CD Displays • OLED Display Power Supp ly – PDA, Pocket PC, Smart Phones – Handheld Devices – Cellular Phones 3 Description The TPS61045 device is a high-frequency boost converter with dig itally-programmable output voltage and true shutdown. During shutdown, the out put is disconnected from the input by opening the internal input switch. This allows a controlled po.
Keywords TPS61045, datasheet, pdf, etcTI, Digitally, Adjustable, Boost, Converter, PS61045, S61045, 61045, TPS6104, TPS610, TPS61, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)