Details, datasheet, quote on part number: LM73606RNPR
PartLM73606RNPR
CategorySemiconductors => Power Management => Non-isolated DC/DC Switching Regulator => Step-Down (Buck) => Buck Converter (Integrated Switch)
Part familyLM73606 3.5V to 36V, 6A Synchronous Step-Down Voltage Converter
TitleSwitching Voltage Regulators 3.5V to 36V,6A Synch Step-Down Volt
Description3.5V to 36V, 6A Synchronous Step-Down Voltage Converter 30-WQFN -40 to 125
CompanyTexas Instruments Inc.
StatusACTIVE
ROHSY
SampleNo
DatasheetDownload LM73606RNPR datasheet
Specifications 
Package GroupWQFN
Vout(Max)(V)34
Control ModeCurrent Mode
RatingCatalog
Switching Frequency(Min)(kHz)350
FeaturesEnable,Frequency Synchronization,Light Load Efficiency,Over Current Protection,Power Good,Pre-Bias Start-Up,Synchronous Rectification,UVLO Fixed
Operating Temperature Range(C)-40 to 125
Vin(Max)(V)36
TypeConverter
Regulated Outputs(#)1
Iout(Max)(A)6
Iq(Typ)(mA)0.015
Approx. Price (US$)2.55 | 1ku
Vout(Min)(V)1
Duty Cycle(Max)(%)95
Vin(Min)(V)3.5
Switching Frequency(Max)(kHz)2200
  Mecanical Data
Pin nbPackage typeInd stdJEDEC codePackage qtyCarrierDevice markWidth (mm)Length (mm)Thick (mm)Pitch (mm)
30RNPWQFNR-PQFP-N3000LARGE T&RNP 46.75.5
Evaluation Kits
LM73606EVM-5V-400K: LM73606 Synchronous Step-Down Converter Evaluation Module
Spice Model
LM73606 Unencrypted PSpice Transient Model - ZIP (09/19/2017)
LM73606 PSpice Transient Model - ZIP (09/19/2017)

Others parts numbering
LM73605EVM-5V-2MHZ: Power Management IC Development Tools LM73605 EvalMod
LM73605RNPT: Switching Voltage Regulators 3.5V to 36V,5A Synch Step-Down VConverter
LM73605RNPR: Switching Voltage Regulators 3.5V to 36V 5A Synch Step-Down VConverter
LM73606RNPT: Switching Voltage Regulators 3.5V to 36V,6A Synch
LM73606EVM-5V-400K: Power Management IC Development Tools LM73606 EvalMod

 

Features, Applications

Industrial Distributed Power Applications Telecommunications Systems General-Purpose Wide VIN Regulation

Synchronous Rectification Wettable Flanks QFN Package (WQFN) Low Quiescent Current A in Shutdown (typical) A in Active Mode with No Load (typical) Wide Voltage Conversion Range: tON_MIN 60 ns (typical) tOFF_MIN 70 ns (typical) Low MOSFET ON-Resistance: RDS_ON_HS 53 m (typical) RDS_ON_LS 31 m (typical) External Bias Input to Improve Efficiency Pin-Selectable Auto Mode or Forced PWM Operation Adjustable Frequency Range: 350 kHz to 2.2 MHz Synchronizable to External Clock Internal Compensation Power-Good Flag Precision Enable to Program System UVLO Flexible Soft-Start Features: Start-up into Pre-Biased Load Fixed or Adjustable Soft-Start Time Output Voltage Tracking Cycle-by-Cycle Current Limiting Short-Circuit Protection With Hiccup Mode Thermal Shutdown Protection Create a Custom Design With the WEBENCH Power Designer using or LM73606 Simplified Schematic

The LM73605/LM73606 family of devices are easyto-use synchronous step-down DC-DC converters capable of driving (LM73606) of load current from a supply voltage ranging from 36 V. The LM73605/LM73606 provide exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization to an external clock, FPWM option, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load and optional external bias improve efficiency over the entire load range. The family requires few external components and has a pinout designed for simple PCB layout with optimal EMI and thermal performance. Protection features include thermal shutdown, input undervoltage lockout, cycleby-cycle current limiting, and hiccup short-circuit protection. The LM73605 and LM73606 devices are pin-to-pin compatible for easy current scaling. Device Information(1)

PART NUMBER LM73605 LM73606 PACKAGE WQFN (30) Wettable Flanks BODY SIZE (NOM) 4.00 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
Efficiency vs Load Current VOUT 5 V, fSW = 500 kHz, Auto Mode

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.

Features.................................................................. Applications........................................................... Description............................................................. Revision History..................................................... Pin Configuration and Functions......................... Specifications.........................................................

Absolute Maximum Ratings...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information.................................................. Electrical Characteristics........................................... Timing Characteristics............................................... Switching Characteristics.......................................... System Characteristics............................................. Typical Characteristics..............................................

Device Support...................................................... Related Documentation....................................... Related Links........................................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks........................................................... Electrostatic Discharge Caution............................ Glossary................................................................

7.1 Overview................................................................. 11 7.2 Functional Block Diagram....................................... 11 7.3 Feature Description................................................. 12

DATE September 2017 REVISION * NOTES Initial release
Submit Documentation Feedback Product Folder Links: LM73605 LM73606
30 SW CBOOT VCC BIAS RT SS/TRK 15 NC DAP 28 NC PGND PVIN AGND EN SYNC/ MODE PGOOD

PIN NO. NAME SW CBOOT VCC I/O (1) P DESCRIPTION Switching output of the regulator. Internally connected to source of the HS FET and drain of the LS FET. Connect to power inductor and boot-strap capacitor. Boot-strap capacitor connection for HS FET driver. Connect a high-quality 470-nF capacitor from this pin to the SW pin. Output of internal bias supply. Used as supply to internal control circuits and drivers. Connect a high-quality 2.2-F capacitor from this pin to GND. TI does not recommend loading this pin by external circuitry. Optional BIAS LDO supply input. TI recommends tying to VOUT when 3.3 V VOUT V, or tie to an external or 5-V rail if available, to improve efficiency. BIAS pin voltage must not be greater than VIN. Tie to ground when not in use. Switching frequency setting pin. Place a resistor from this pin to ground to set the switching frequency. If floating, the default switching frequency will be 500 kHz. Do not short to ground. Soft-start control pin. Leave this pin floating for a 5-ms internal soft-start ramp. An external capacitor can be connected from this pin to ground to extend the soft start time. A 2-A current sourced from this pin charges the capacitor to provide the ramp. Connect to external ramp for tracking. Do not short to ground. Feedback input for output voltage regulation. Connect a resistor divider to set the output voltage. Never short this pin to ground during operation. No internal connection. Connect to ground net and copper to improve heat sinking and board-level reliability. Open drain power-good flag output. Connect to suitable voltage supply through a current limiting resistor. High = VOUT regulation OK, Low = VOUT regulation fault. PGOOD = LOW when EN = low and VIN 2 V.

A = Analog, O = Output, I = Input, G = Ground, P = Power Submit Documentation Feedback Product Folder Links: LM73606 3


 

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