520kHz/1.6MHz space efficient boost and SEPIC DC-DC regulator
Product details
Parameters
Package | Pins | Size
Features
- Input Voltage Range: 2.7 V to 5.5 V
- Output Voltage Range: 3 V to 24 V
- 2.1-A Switch Current Over Full Temperature Range
- Current-Mode Control
- Logic High Enable Pin
- Ultra-Low Standby Current of 80 nA in Shutdown
- 170-mΩ NMOS Switch
- ±2% Feedback Voltage Accuracy
- Ease-of-Use, Small Total Solution Size
- Internal Soft Start
- Internal Compensation
- Two Switching Frequencies
- 520 kHz (LM2735-Y)
- 1.6 MHz (LM2735-X)
- Uses Small Surface Mount Inductors and Chip Capacitors
- Tiny SOT-23, WSON, and MSOP-PowerPAD™ Packages
- Create a Custom Design Using the LM2735 With WEBENCH® Power Designer
All trademarks are the property of their respective owners.
Description
The LM2735 device is an easy-to-use, space-efficient 2.1-A low-side switch regulator, ideal for Boost and SEPIC DC/DC regulation. The device provides all the active functions to provide local DC-DC conversion with fast-transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to either 520 kHz or 1.6 MHz, allowing the use of extremely small surface mount inductor and chip capacitors, while providing efficiencies of up to 90%. Current-mode control and internal compensation provide ease-of-use, minimal component count, and high-performance regulation over a wide range of operating conditions. External shutdown features an ultra-low standby current of 80 nA, ideal for portable applications. Tiny SOT-23, WSON, and MSOP-PowerPAD packages provide space savings. Additional features include internal soft start, circuitry to reduce inrush current, pulse-by-pulse current limit, and thermal shutdown.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LM2735 520-kHz and 1.6-MHz Space-Efficient Boost and SEPIC DC/DC Regulator datasheet (Rev. I) | Sep. 05, 2018 |
Selection guide | Power Management Guide 2018 (Rev. R) | Jun. 25, 2018 | |
Application note | Design of UVLO for LM27313 (Rev. B) | Apr. 08, 2014 | |
User guide | AN-1668 LM2735Y 8-Pin eMSOP Demo Board (Rev. B) | Apr. 25, 2013 | |
User guide | AN-1660 LM2735Y 6-Pin LLP Demo Board (Rev. A) | Apr. 24, 2013 | |
User guide | AN-1664 LM2735X 5-Pin SOT23 Demo Board (Rev. B) | Apr. 24, 2013 | |
User guide | AN-1665 LM2735Y 5-Pin SOT23 Demo Board (Rev. B) | Apr. 24, 2013 | |
User guide | AN-1666 LM2735X 6-Pin LLP Demo Board (Rev. A) | Apr. 24, 2013 | |
User guide | AN-1667 LM2735X 8-Pin eMSOP Demo Board (Rev. A) | Apr. 24, 2013 | |
Application note | AN-1658 LM2735 BOOST and SEPIC DC-DC Regulator (Rev. A) | Apr. 23, 2013 | |
User guide | High Efficiency Portable Media Player (PMP) Dock Station User Guide | Jan. 27, 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The J6Entry/RSP EVM is an evaluation platform designed to speed up development efforts and reduce time to market for applications such as Infotainment, reconfigurable Digital Cluster or Integrated Digital Cockpit.
The main CPU board integrates these key peripherals such as Ethernet or HDMI, while the (...)
Features
- 10.1" Display with capacitive Touch
- JAMR3 Radio Tuner Application Board
- 2GB DDR3L
- LP8733/LP8732 Power Solution
- On-board eMMC, NAND, NOR
- USB3, USB2, PCIe, Ethernet, COM8Q, CAN, MLB, MicroSD and HDMI connectors
Description
Features
- 10.1" AUO Display (1280X800) with capacitive Multi-Touch
- 24 bit Parallel interface to the CPU board EVM
Description
The demo board included in this shipment converts 3V to 5.5V input to 3.3V output for up to 500mA load current using the LM2735X 1.6MHz DC-DC switching converter. This is a 2- layer board using the bottom layer as a ground plane.
Features
- Input voltage range 2.7V to 5.5V
- Output voltage range 3V to 24V
- 2.1A switch current over full temperature range
- Current-Mode control
- Logic high enable pin
- Ultra low standby current of 80 nA in shutdown
- 170Ωm NMOS switch
- 2% feedback voltage accuracy
- Ease-of-use, small total solution size
⢠Internal soft-start
(...)
Description
The demo board included in this shipment uses the LM2735X 1.6MHz DC-DC switching regulator that converts 3V to 5.5V input to 12V output for up to 500mA load current depending on Vin. This is a 2-layer board using the bottom layer as a Ground plane.
Features
- Input voltage range 2.7V to 5.5V
- Output voltage range 3V to 24V
- 2.1A switch current over full temperature range
- Current-Mode control
- Logic high enable pin
- Ultra low standby current of 80 nA in shutdown
- 170Ωm NMOS switch
- 2% feedback voltage accuracy
- Ease-of-use, small total solution size
⢠Internal soft-start
(...)
Description
The demo board included in this shipment converts 3V to 5.5V input to 12V output for up to 500mA load current using the LM2735Y 520kHz DC-DC switching converter in the 8-Pin eMSOP package. This is a 2-layer board using the bottom layer as a Ground plane.
Features
- Input voltage range 2.7V to 5.5V
- Output voltage range 3V to 24V
- 2.1A switch current over full temperature range
- Current-Mode control
- Logic high enable pin
- Ultra low standby current of 80 nA in shutdown
- 170Ωm NMOS switch
- 2% feedback voltage accuracy
- Ease-of-use, small total solution size
⢠Internal soft-start
(...)
Description
The demo board included in this shipment converts 3V to 5.5V input to 12V output for up to 500mA load current using the LM2735X 1.6MHz DC-DC switching converter. This is a 2-layer board using the bottom layer as a ground plane.
Features
- Input voltage range 2.7V to 5.5V
- Output voltage range 3V to 24V
- 2.1A switch current over full temperature range
- Current-Mode control
- Logic high enable pin
- Ultra low standby current of 80 nA in shutdown
- 170Ωm NMOS switch
- 2% feedback voltage accuracy
- Ease-of-use, small total solution size
⢠Internal soft-start
(...)
Description
The demo board included in this shipment converts 3V to 5.5V input to 12V output for up to 500mA load current using the LM2735Y 520kHz DC-DC switching converter. This is a 2-layer board using the bottom layer as a ground plane.
Features
- Input voltage range 2.7V to 5.5V
- Output voltage range 3V to 24V
- 2.1A switch current over full temperature range
- Current-Mode control
- Logic high enable pin
- Ultra low standby current of 80 nA in shutdown
- 170Ωm NMOS switch
- 2% feedback voltage accuracy
- Ease-of-use, small total solution size
⢠Internal soft-start
(...)
Description
The demo board included in this shipment converts 3V to 5.5V input to 12V output for up to 500mA load current using the LM2735X 1.6MHz DC-DC switching converter in the 8-Pin eMSOP package. This is a 2-layer board using the bottom layer as a ground plane.
Features
- Input voltage range 2.7V to 5.5V
- Output voltage range 3V to 24V
- 2.1A switch current over full temperature range
- Current-Mode control
- Logic high enable pin
- Ultra low standby current of 80 nA in shutdown
- 170Ωm NMOS switch
- 2% feedback voltage accuracy
- Ease-of-use, small total solution size
⢠Internal soft-start
(...)
Description
The demo board included in this shipment converts 3V to 5.5V input to 12V output for up to 500mA load current using the LM2735Y 520kHz DC-DC switching converter. This is a 2-layer board using the bottom layer as a Ground plane.
Features
- Input voltage range 2.7V to 5.5V
- Output voltage range 3V to 24V
- 2.1A switch current over full temperature range
- Current-Mode control
- Logic high enable pin
- Ultra low standby current of 80 nA in shutdown
- 170Ωm NMOS switch
- 2% feedback voltage accuracy
- Ease-of-use, small total solution size
⢠Internal soft-start
(...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Features
- Features isolated topologies like Fly-Buck™, Fly-Buck-Boost, DCM and CCM Flyback
- Capability to design up to 6 isolated outputs
- Recommends ICs for desired application design
- Incorporates loop compensation in designs
- Compares efficiency, external component count and transformer currents for every topology (...)
Reference designs
Design files
-
download TIDA-010055 BOM Files.zip (310KB) -
download TIDA-010055 Assembly Files.zip (827KB) -
download TIDA-010055 Layer Plots.zip (2674KB) -
download TIDA-010055 CAD Files.zip (9038KB) -
download TIDA-010055 Gerber.zip (1157KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
HVSSOP (DGN) | 8 | View options |
SOT-23 (DBV) | 5 | View options |
WSON (NGG) | 6 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.