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6MHz, 750mA Miniature, Adjustable, Step-Down DC-DC Converter with Bypass

NEW - Custom reel may be available
Inventory: 1,168,797  

Quality information

RoHS Yes
Lead finish / Ball material SNAGCU
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (℃)
DSBGA (YFQ) | 9 3,000 | LARGE T&R
Custom reel may be available
-30 to 90
Package | Pins DSBGA (YFQ) | 9
Package qty | Carrier: 3,000 | LARGE T&R
Custom reel may be available
Operating temperature range (℃) -30 to 90
View TI packaging information

Features for the LM3242

  • 2.7-V to 5.5-V Input Voltage Operating From
    Single Li-Ion Cell
  • 6-MHz (typical) PWM Switching Frequency
  • 0.4-V to 3.6-V Adjustable Output Voltage
  • 750-mA Maximum Load Capability
    (up to 1 A in Bypass)
  • High Efficiency (95% typical at 3.9 VIN,
    3.3 VOUT at 500 mA)
  • Automatic ECO/PWM/BP Mode Change
  • Current Overload Protection
  • Thermal Overload Protection
  • Soft-Start Function
  • Small Chip Inductor in 0805 (2012) case size

Description for the LM3242

The LM3242 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single lithium-ion cell; however, it may be used in many other applications. It steps down an input voltage from 2.7 V to 5.5 V to an adjustable output voltage from 0.4 V to 3.6 V. Output voltage is set using a VCON analog input for controlling power levels and efficiency of the RF PA.

The LM3242 offers five modes of operation. In PWM mode the device operates at a fixed frequency of 6 MHz (typical) which minimizes RF interference when driving medium-to-heavy loads. At light load, the device enters into ECO mode automatically and operates with reduced switching frequency. In ECO mode, the quiescent current is reduced and extends the battery life. Shutdown mode turns the device off and reduces battery consumption to 0.1 µA (typical). In low-battery condition Bypass mode reduces the voltage dropout to less than 50 mV (typical). The part also features a Sleep mode.

The LM3242 is available in a 9-bump lead-free DSBGA package. A high switching frequency (6 MHz) allows use of only three tiny surface-mount components: one inductor and two ceramic capacitors.


Qty Price (USD)
1-99 1.161
100-249 0.893
250-999 0.658
1,000+ 0.47

Additional package qty | carrier options

Package qty | Carrier 250 | SMALL T&R
Inventory 30,193
Qty | Price (USD) 1ku | 0.541 1-99 1.336 100-249 1.028 250-999 0.757 1,000+ 0.541