LMR10530 5.5V, 3A 3MHz Step-Down Regulator in WSON Package | TI.com


5.5V, 3A 3MHz Step-Down Regulator in WSON Package


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The LMR10530 regulator is a monolithic, high frequency, PWM step-down DC/DC converter available in a 10-pin WSON package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LMR10530 is easy to use. The ability to drive 3.0A loads with an internal 56 mΩ PMOS switch using state-of-the-art 0.5µm BiCMOS technology results in the best power density available. The control circuitry allows on-times as low as 30ns, thus supporting exceptionally high frequency conversion over the entire 3V to 5.5V input operating range down to the minimum output voltage of 0.6V. Switching frequency is internally set to 1.5MHz or 3.0MHz, allowing the use of extremely small surface mount inductors and capacitors. 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 300nA. The LMR10530 utilizes peak 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, cycle-by-cycle current limit, frequency foldback, thermal shutdown, and output over-voltage protection.


  • Input Voltage Range of 3.0V to 5.5V
  • Output Voltage Range of 0.6V to 4.5V
  • 1.5 MHz (LMR10530X) and 3 MHz (LMR10530Y) Switching Frequencies
  • WSON-10 (3 x 3 x 0.8 mm) Packaging
  • 3.0A Steady-State Output Current
  • Low Shutdown Iq, 300 nA Typical
  • 56mΩ PMOS Switch
  • Internal Soft-Start
  • Internally Compensated Peak Current-Mode Control
  • Cycle-by-cycle Current Limit and Thermal Shutdown
  • WEBENCH enabled

Performance Benefits

  • Extremely Easy to Use
  • Tiny Overall Solution Reduces System Cost

SIMPLE SWITCHER is a trademark of Texas Instruments. WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

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Parametrics Compare all products in Buck converters (integrated switch)

Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Control mode
Duty cycle (Max) (%)
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
LMR10530 LMR10510 LMR10515 LMR10520
3     3     3     3    
5.5     5.5     5.5     5.5    
0.6     0.6     0.6     0.6    
4.5     4.5     4.5     4.5    
3     1     1.5     2    
1     1     1     1    
1600     1600     1600     1600    
3750     3000     3000     3000    
3.2     3.3     3.3     3.3    
Enable     Enable     Enable     Enable    
Current Mode     Current Mode     Current Mode     Current Mode    
90     94     94     94    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
Catalog     Catalog     Catalog     Catalog    
WSON | 10     SOT-23 | 5
WSON | 6    
SOT-23 | 5
WSON | 6    
WSON | 6    
Converter     Converter     Converter     Converter    
See datasheet (WSON)     5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)
See datasheet (WSON)    
5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)
See datasheet (WSON)    
See datasheet (WSON)    

Design tool

WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LMR10530

  Min   Max Range
Vin  V 3.0 to 5.5V
Vout  V 0.6 to 4.5V
Iout  A ≤ 3A
Ambient Temp  °C -40 to 125°C