Texas Instruments Inc. (TI, Dallas, TX) unveiled the TPS6024x Series of switched-capacitor buck-boost converters. Featuring 170µVrms output voltage ripple (at 20Hz to 10MHz bandwidth), the devices are well suited to applications in cellular phones, wireless personal digital assistants (PDAs) and digital cameras.
The TPS6024x Series suppresses sideband interference and boosts channel locking, which improves overall transmission quality in wireless and RF applications. A wide input voltage range of 1.8V to 5.5V makes the TPS6024x ideal for two- and three-cell nickel- or alkaline-based battery chemistries, or one-cell lithium-based battery applications, as well as fixed input voltage sources. The TPS6024x supports a 2.7V, 3V, 3.3V and 5V output with an output current up to 12mA. Normal operating current is only 250µA and the converter's shutdown mode reduces this further to a mere 100nA (typical).
"Our innovative dual-cap design has allowed TI to deliver an unmatched low-noise switched-cap solution for advanced wireless and RF applications, whether they use CDMA, GSM, Bluetooth, or 802.11 technology," said Bert Wank, strategic marketing engineer for TI's power management products. "Manufacturers of wireless appliances will benefit from the TPS6024x's miniature size, fewer external components and the reduction in overall solution cost."
The TPS60241 is available now. Other versions of the series, TPS60240, TPS60242 and TPS60243, are scheduled for volume production in the fourth quarter of 2001, with samples available now. All versions are packaged in a thin MSOP-8 with a height of only 1.1mm. Suggested resale pricing for the TPS60241 starts at $1.55 in 1,000-piece quantities.
