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3.5V to 36V, 1A Synchronous Step-Down Voltage Converter

Inventory: 524

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View

Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
HTSSOP (PWP) | 16 90 | TUBE
-40 to 125
Package | Pins HTSSOP (PWP) | 16
Package qty | Carrier 90 | TUBE
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the LM43601

  • 33-µA Quiescent Current in Regulation
  • High Efficiency at Light Load (DCM and PFM)
  • Meets EN55022/CISPR 22 EMI Standards
  • Integrated Synchronous Rectification
  • Adjustable Frequency Range: 200 kHz to 2.2 MHz (500 kHz default)
  • Frequency Synchronization to External Clock
  • Internal Compensation
  • Stable With Almost Any Combination of Ceramic, Polymer, Tantalum, and Aluminum Capacitors
  • Power-Good Flag
  • Soft Start into Pre-Biased Load
  • Internal Soft Start: 4.1 ms
  • Extendable Soft-Start Time by External Capacitor
  • Output Voltage Tracking Capability
  • Precision Enable to Program System UVLO
  • Output Short-Circuit Protection With Hiccup Mode
  • Overtemperature Thermal Shutdown Protection
  • Create a Custom Design Using the LM43601 With the WEBENCH® Power Designer

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Description for the LM43601

The LM43601 regulator is an easy to use synchronous step-down DC-DC converter capable ofdriving up to 1 A of load current from an input voltage ranging from 3.5 V to 36 V (42 Vtransient). The LM43601 provides exceptional efficiency, output accuracy, and dropout voltage in avery small solution size. An extended family is available in 0.5-A, 2-A and 3-A load currentoptions in pin-to-pin compatible packages. Peak-current-mode control is employed to achieve simplecontrol-loop compensation and cycle-by-cycle current limiting. Optional features such asprogrammable switching frequency, synchronization, power-good flag, precision enable, internal softstart, extendable soft start, and tracking provide a flexible and easy-to-use platform for a widerange of applications. Discontinuous conduction and automatic frequency modulation at light loadsimprove light load efficiency. The family requires few external components and pin arrangementallows simple, optimum PCB layout. Protection features include thermal shutdown,VCC undervoltage lockout, cycle-by-cycle current limit, and outputshort-circuit protection. The LM43601 device is available in the 16-leaded HTSSOP (PWP) package(6.6 mm × 5.1 mm × 1.2 mm) with 0.65-mm lead pitch. This device is pin-to-pin compatible withLM46000, LM46001, LM46002, LM43600, LM43602, and LM43603.


Qty Price (USD)
1-99 $3.414
100-249 $2.991
250-999 $2.097
1,000+ $1.690

Additional package qty | carrier options

Package qty | Carrier 2,000 | LARGE T&R
Inventory 22,184
Qty | Price (USD) 1ku | $1.408 1-99 $2.844 100-249 $2.492 250-999 $1.747 1,000+ $1.408
Custom reel may be available

Package qty | Carrier 250 | SMALL T&R
Inventory 3,565
Qty | Price (USD) 1ku | $1.619 1-99 $3.270 100-249 $2.866 250-999 $2.009 1,000+ $1.619