3V to 5.5V, 1A Step-Down DC/DC Switching Regulator in SOT-23 Package
Product details
Parameters
Package | Pins | Size
Features
- Input Voltage Range of 3 V to 5.5 V
- Output Voltage Range of 0.6 V to 4.5 V
- Output Current up to 1 A
- 1.6-MHz (LMR10510X) and 3-MHz (LMR10510Y) Switching Frequencies
- Low Shutdown IQ, 30 nA Typical
- Internal Soft Start
- Internally Compensated
- Current-Mode PWM Operation
- Thermal Shutdown
- SOT-23 (2.92 × 2.84 × 1 mm) and WSON
(3 × 3 × 0.8 mm) Packaging - Tiny Overall Solution Reduces System Cost
- Create a custom design using the LMR10510 with the WEBENCH® Power Designer
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Description
The LMR10510 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 5-pin SOT-23 and a 6-pin WSON package. It provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. The LMR10510 is internally compensated, so it is simple to use and requires few external components. The ability to drive 1-A loads with an internal 130-mΩ PMOS switch results in the best power density available. The world-class control circuitry allows on-times as low as 30 ns, thus supporting exceptionally high frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.6 V.
The LMR10510 is a constant frequency PWM buck regulator IC that delivers a 1-A load current. The regulator has a preset switching frequency of 1.6 MHz or 3 MHz. This high frequency allows the LMR10510 to operate with small surface mount capacitors and inductors, resulting in a DC/DC converter that requires a minimum amount of board space. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 30 nA. The LMR10510 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LMR10510/LMR10515/LMR10520 is a PWM DC/DC buck (step-down) regulator. With a switching frequency of 3MHz or 1.6MHz the overall solution size is very compact and requires a minimum number of components. The LMR10510/LMR10515/LMR10520 Demo Board is designed to provide the design engineer with a (...)
Features
- 3.0V to 5.5V Input Voltage Range
- 1.8V Output Voltage (Default Setting)
- 1A Output Current
- Switching Frequency of 3 MHz
- Small Solution Size (13 mm x 12 mm)
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
- (...)
Reference designs
Design files
Design files
Design files
-
download TIDA-00288 BOM.pdf (226KB) -
download TIDA-00288 PCB Layout.zip (461KB) -
download TIDA-00288 CAD Files.zip (599KB) -
download TIDA-00288 Gerber.zip (306KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
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
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Support & training
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