Product category:
Power Supply ICs and Controllers
News Release from: Spectrum Group | Subject: CAT3200-5 and CAT3200
Edited by the Electronicstalk Editorial
Team on 23 July 2004
Charge pumps target handheld
applications
Catalyst Semiconductor has released a pair of very low noise, regulated output charge pumps that implement a 2MHz constant switching frequency, enabling the use of small 1uF ceramic capacitors.
Catalyst Semiconductor has released a pair of very low noise, regulated output charge pumps that implement a 2MHz constant switching frequency, enabling the use of small 1uF ceramic capacitors The CAT3200-5 and CAT3200 devices are designed to continuously monitor and control the inrush current during power-up, and are ideal for battery-powered applications
This article was originally published on Electronicstalk on 3 Aug 2004 at 8.00am (UK)
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A shutdown feature disconnects the load from VIN and reduces quiescent current to well under 1 microampere.
The devices can survive a continuous short-circuit from output to ground.
Other features include output current of 100mA, zero current consumption in shutdown mode and undervoltage lockout.
The CAT3200-5 is a fixed 5V regulated output charge pump power convertor in a thin SOT23 package.
It is designed to address cost critical applications, such as wireless and other small handheld devices that require a regulated, or boosted, voltage higher than the supply voltage.
Operating from input voltage down to 2.7V, the CAT3200-5 is well suited for lithium-ion battery powered devices that require a 5V fixed bias for an ASIC as well as USB peripherals.
It also provides a solution to drive LEDs in parallel, using ballast resistors to set the current, in LCD backlighting and in colour indicator applications.
For applications that need an adjustable output general-purpose power convertor Catalyst offers the CAT3200.
This device is well suited to driving LEDs in parallel using an external resistor on the feedback pin to set the LED current, and is shipped in an 8-pin MSOP package.
The CAT3200-5 is available in a thin, 1mm maximum height, 6-lead SOT23 package, priced at $0.85 in 3000-piece quantities.
The CAT3200 is available in a space-saving, 8-lead MSOP, priced at $0.94 in 3000-piece quantities.
Samples of both devices are available now, with production quantities scheduled later in Q3 2004.
As with every Catalyst device, both devices are available in environment friendly halogen and lead free "green" packages.
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