LMR36510 SIMPLE SWITCHER® 4.2-V to 65-V, 1-A synchronous step-down converter with 26-uA IQ | TI.com

LMR36510
This product is prototype/experimental and has not been released to the market. Testing and final processes may not be complete. This product may be subject to further changes or possible discontinuation.
SIMPLE SWITCHER® 4.2-V to 65-V, 1-A synchronous step-down converter with 26-uA IQ

 

Sample availability

Alternate preproduction samples are available (PLMR36520ADDAR). This device has the same functionality, pinout and package as the LMR36510 but is not an exact equivalent. Request now

Description

The LMR36510 regulator is an easy-to-use, synchronous, step-down DC/DC SIMPLE SWITCHER converter. With integrated high-side and low-side power MOSFETs, output current up to 1 A is delivered over a wide input voltage range of 4.2 V to 65 V. The transient tolerance that goes up to 70 V reduces the solution size and cost to protect against overvoltages and meets the surge immunity requirements of IEC 61000-4-5.

The LMR36510 uses peak-current mode control to provide optimal efficiency and output voltage accuracy. Precision enable gives flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the requirement for an external supervisor.

Integration and internal compensation eliminates many external components and provides a pinout designed for a simple PCB layout. The feature set of the device is designed to simplify implementation for a wide range of end equipment. The LMR36510 is pin-to-pin compatible with the LMR36520 (65 V, 2 A) and LMR33620 and LMR33630 (36 V, 2 A/3 A), completing the family of SIMPLE SWITCHER converters scalable power supplies. This minimizes design efforts and cost associated with board layout modifications.

The LMR36510 is in an 8-pin HSOIC package.

Features

  • Designed for reliable and rugged applications
    • Input transient protection up to 70 V
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
  • Well-suited for scalable industrial power supplies
    • Pin compatible with:
    • Internal compensation helps reduce solution size, cost and design complexity
    • 400-kHz frequency
  • Wide conversion range
    • Input voltage range: 4.2 V to 65 V
    • Output voltage range: 1 V to 95% of VIN
    • Short minimum on time of 60 ns
  • Low-power dissipation across load spectrum
    • 90% efficiency at 400 kHz (24 VIN, 5 VOUT,
      1 A)
    • Increased light-load efficiency in PFM mode
    • Low operating quiescent current of 26 µA
  • Power-good output with filter and delayed release

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Parametrics

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Part number Order 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) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
LMR36510 Order now 4.2     65     1     62     1     1     340     460     0.026     Enable
Light Load Efficiency
Over Current Protection
Power Good
Soft Start Fixed
UVLO Fixed    
Current Mode     98     -40 to 125     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
LMR36006 Order now 4.2     60     1     57     0.6     1     1000     2100     0.023     Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Wettable Flanks Package    
Current Mode     98     -40 to 150     Catalog     VQFN-HR | 12     Converter     12VQFN-HR: 6 mm2: 3 x 2 (VQFN-HR | 12)    
LMR36015 Order now 4.2     60     1     57     1.5     1     400     1000     0.023     Enable
Forced PWM
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Wettable Flanks Package    
Current Mode     98     -40 to 150     Catalog     VQFN-HR | 12     Converter     12VQFN-HR: 6 mm2: 3 x 2 (VQFN-HR | 12)    
LMR36520 Order now 4.2     65     1     62     2     1     340     460     0.026     Enable
Light Load Efficiency
Over Current Protection
Power Good
Soft Start Fixed
UVLO Fixed    
Current Mode     98     -40 to 125     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)