Converters. TPS61235P Datasheet

TPS61235P Datasheet PDF

Part TPS61235P
Description 8-A Valley Current Synchronous Boost Converters
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TPS61235P
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TPS61235P, TPS61236P
SLVSCK4A – SEPTEMBER 2015 – REVISED MAY 2016
TPS6123x 8-A Valley Current Synchronous Boost Converters with Constant Current
Output Feature
1 Features
1 Up to 97% Efficiency Synchronous Boost
• Up to 3.5-A IOUT for 3.3-V to 5-V Conversion
• 10-A 14-mΩ/14-mΩ Internal Power Switches
• Programmable Constant Output Current
• Output Current Monitor
• 10-µA IQ under Light Load Condition
• Boost Status Indication
• True disconnection during shutdown
• Fixed 5.1-V Output Voltage (TPS61235P) or
Adjustable Output Voltage from 2.9-V to-5.5 V
(TPS61236P)
• 1-MHz Switching Frequency
• Softstart, Current Limit, Over Voltage and Over
Thermal Protections
• 2.5 mm x 2.5 mm VQFN Package
2 Applications
• Power Banks, Battery Backup Units
• USB Charging Port
• USB Type-C
• Battery Powered USB Hub
• Tablet PCs
• Battery Powered Products
3 Description
The TPS6123x is a high current, high efficiency
synchronous boost converter with constant output
current feature for single cell Li-Ion and Li-polymer
battery powered products, in a wide range of power
bank, tablet, and other portable devices. The IC
integrates 14-mΩ/14-mΩ power switches and is
capable of delivering up to a 3.5-A output current for
3.3-V to 5-V conversion with up to 97% high
efficiency. The device supports a programmable
constant output current to control power delivery, so
to save power path components and lower total
system thermal dissipation effectively.
The device only consumes a 10-µA quiescent current
under a light load condition, and can report load
status to the system, which make it very suitable for
Always-On applications. With the TPS6123x, a simple
and flexible system design can be achieved,
eliminating external power path components, saving
PCB space, and reducing BOM cost.
In shutdown, the output is completely disconnected
from the input, and current consumption is reduced to
less than 1 µA. Other features like soft start control,
reverse current blocking, over voltage protection, and
thermal shutdown protection are built-in for system
safety.
The devices are available in a 2.5-mm x 2.5-mm
VQFN package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61235P
VQFN (9)
2.50 mm x 2.50 mm
TPS61236P
VQFN (9)
2.50 mm x 2.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
SPACING
Li-Ion
Battery
TPS61235P Typical Application
L1
1 PH
SW
VOUT
5.1 V
VOUT
C1
10 PF
ON
OFF
VIN
FB
TPS61235P
EN
C2
22 PF x 3
CC
INACT
AGND PGND
Typical Application Efficiency (TPS61235P)
100
95
90
85
80
75
70 2.7 V Input
3.3 V Input
65 3.6 V Input
4.2 V Input
60
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Output Current (A)
D001
Copyright © 2016, Texas Instruments Incorporated
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.



TPS61235P
TPS61235P, TPS61236P
SLVSCK4A – SEPTEMBER 2015 – REVISED MAY 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 Typical Characteristics .............................................. 7
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ......................................... 9
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 15
9 Applications and Implementation ...................... 16
9.1 Application Information............................................ 16
9.2 Typical Applications ................................................ 16
10 Power Supply Recommendations ..................... 26
11 Layout................................................................... 27
11.1 Layout Guidelines ................................................. 27
11.2 Layout Example .................................................... 27
11.3 Thermal Considerations ........................................ 28
12 Device and Documentation Support ................. 29
12.1 Device Support...................................................... 29
12.2 Documentation Support ....................................... 29
12.3 Related Links ........................................................ 29
12.4 Receiving Notification of Documentation Updates 29
12.5 Community Resources.......................................... 29
12.6 Trademarks ........................................................... 29
12.7 Electrostatic Discharge Caution ............................ 29
12.8 Glossary ................................................................ 30
13 Mechanical, Packaging, and Orderable
Information ........................................................... 30
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (September 2015) to Revision A
Page
• Changed part numbers to TPS61235P and TPS61236P for Pb-free nomenclature ............................................................. 1
2 Submit Documentation Feedback
Copyright © 2015–2016, Texas Instruments Incorporated
Product Folder Links: TPS61235P TPS61236P




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