Step-Up Converter. TPS61240-Q1 Datasheet

TPS61240-Q1 Converter. Datasheet pdf. Equivalent

TPS61240-Q1 Datasheet
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Part TPS61240-Q1
Description 3.5-MHz High Efficiency Step-Up Converter
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TPS61240-Q1
SLVSAO4B – DECEMBER 2010 – REVISED MARCH 2017
TPS61240-Q1 3.5-MHz High Efficiency Step-Up Converter
1 Features
1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade
– TPS61240IDRVRQ1: Grade 3, –40°C to
+85°C Ambient Operating Temperature
– TPS61240TDRVRQ1: Grade 2, –40°C to
+105°C Ambient Operating Temperature
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C6
• Efficiency > 90% at Nominal Operating Conditions
• Total DC Output Voltage Accuracy 5 V ±2%
• Typical 30 μA Quiescent Current
Best in Class Line and Load Transient
• Wide VIN Range From 2.3 V to 5.5 V
• Output current up to 450 mA
• Automatic PFM/PWM Mode transition
• Low Ripple Power Save Mode for Improved
Efficiency at Light Loads
• Internal Softstart, 250 μs typical Start-Up time
• 3.5 MHz Typical Operating Frequency
• Load Disconnect During Shutdown
• Current Overload and Thermal Shutdown
Protection
• Only Three Surface-Mount External Components
Required (One MLCC Inductor, Two Ceramic
Capacitors)
• Total Solution Size < 13 mm2
• Available in a 2 mm × 2 mm WSON Package
2 Applications
• Advanced Driver Assistance Systems (ADAS)
– Front Camera
– Surround View System ECU
– Radar and LIDAR
• Automotive Infotainment and Cluster
– Head Unit
– HMI and Display
• Body Electronics and Lighting
• Factory Automation and Control
3 Description
The TPS61240-Q1 device is a high efficient
synchronous step up DC-DC converter optimized for
products powered by either a three-cell alkaline, NiCd
or NiMH, or one-cell Li-Ion or Li-Polymer battery. The
TPS61240-Q1 supports output currents up to 450
mA. The TPS61240-Q1 has an input valley current
limit of 500 mA.
TPS61240-Q1 device provides fixed output voltage of
5V-typ with an input voltage range of 2.3 V to 5.5 V
and the device supports batteries with extended
voltage range. During shutdown, the load is
completely disconnected from the battery. The
TPS61240-Q1 boost converter is based on a quasi-
constant on-time valley current mode control scheme.
The TPS61240-Q1 presents a high impedance at the
VOUT pin when shut down. This allows for use in
applications that require the regulated output bus to
be driven by another supply while the TPS61240-Q1
is shut down.
During light loads the device will automatically pulse
skip allowing maximum efficiency at lowest quiescent
currents. In the shutdown mode, the current
consumption is reduced to less than 1 μA.
TPS61240-Q1 allows the use of a small inductor and
capacitors to achieve a small solution size. The
TPS61240-Q1 is available in a 2 mm × 2 mm WSON
package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61240-Q1
WSON (6)
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VIN
CIN
2.2 µF
Simplified Schematic
L
1 µH
TPS61240-Q1
L VOUT
VIN FB
COUT
EN GND
VOUT 5 V
4.7 µF
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.



Texas Instruments TPS61240-Q1
TPS61240-Q1
SLVSAO4B – DECEMBER 2010 – REVISED MARCH 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 4
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 6
6.6 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 9
7.1 Overview ................................................................... 9
7.2 Functional Block Diagram ......................................... 9
7.3 Feature Description................................................. 10
7.4 Device Functional Modes........................................ 11
8 Application and Implementation ........................ 12
8.1 Application Information............................................ 12
8.2 Typical Applications ................................................ 12
8.3 System Example .................................................... 17
9 Power Supply Recommendations...................... 17
10 Layout................................................................... 17
10.1 Layout Guidelines ................................................. 17
10.2 Layout Example ................................................... 17
11 Device and Documentation Support ................. 18
11.1 Documentation Support ....................................... 18
11.2 Receiving Notification of Documentation Updates 18
11.3 Community Resources.......................................... 18
11.4 Trademarks ........................................................... 18
11.5 Electrostatic Discharge Caution ............................ 18
11.6 Glossary ................................................................ 18
12 Mechanical, Packaging, and Orderable
Information ........................................................... 18
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (October 2016) to Revision B
Page
• Added the AEC-Q100 qualified information to the Features section...................................................................................... 1
• Added operating ambient temperature for T version of device (TPS61240TDRVRQ1) in the Recommended
Operating Conditions table ..................................................................................................................................................... 5
• Added shutdown current for T version of device (TPS61240TDRVRQ1) in the Electrical Characteristics table................... 6
• Changed the Electrostatic Discharge Caution statement..................................................................................................... 18
Changes from Original (December 2010) to Revision A
Page
• Added Applications section, 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
• Changed TPS6124x to TPS61240-Q1 throughout document ............................................................................................... 1
• Changed Description section ................................................................................................................................................. 1
• Deleted Ordering Information table ........................................................................................................................................ 1
• Changed Pin Functions figure and table ............................................................................................................................... 4
• Deleted Dissipation Ratings table........................................................................................................................................... 5
• Added Inductance and Output capacitance values and table note to Recommended Operating Conditions ...................... 5
• Added Thermal Information table ........................................................................................................................................... 5
• Changed reference to Typical Applications section .............................................................................................................. 6
• Changed VOUT test condition to 2.3 V to VIN VOUT ........................................................................................................... 6
• Added equals before 2.3 V in Output current test condition ................................................................................................. 6
• Removed ISW from all rows except Switch valley current limit .............................................................................................. 6
• Changed Operating quiescent current test condition by adding device not switching .......................................................... 6
• Added equals before 600 mVp-p in Line transient response test condition .......................................................................... 6
• Moved figures 8 through 16 to Application Curves section ................................................................................................... 7
• Updated titles of figures 2 through 7 for better clarity Figure 2 ............................................................................................. 7
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Copyright © 2010–2017, Texas Instruments Incorporated
Product Folder Links: TPS61240-Q1



Texas Instruments TPS61240-Q1
www.ti.com
TPS61240-Q1
SLVSAO4B – DECEMBER 2010 – REVISED MARCH 2017
• Deleted Parameter Measurement Information section .......................................................................................................... 9
• Changed Updated Overview section for more clarity ............................................................................................................ 9
• Changed Figure 8 Inductor/Rectifier Currents in Current Limit Operation waveform........................................................... 10
• Added Under no load conditions to Soft Start section.......................................................................................................... 11
• Deleted HDMI / USB-OTG Application title ......................................................................................................................... 12
• Updated Inductor Selection section...................................................................................................................................... 13
• Deleted List of Inductors table and listed one example inductor in description ................................................................... 13
• Changed 2.7 µF to 2.3 µF in Output Capacitor section ....................................................................................................... 14
Copyright © 2010–2017, Texas Instruments Incorporated
Product Folder Links: TPS61240-Q1
Submit Documentation Feedback
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