40V, 200mA Micropower Step-Down DC/DC with TJ(MAX) = 150°C
Linear Technology announces the H-grade version of the LT3470. The LT3470 is a 40V micropower step-down DC/DC converter with integrated boost and catch diodes in a 2mm × 3mm DFN package. It operates from input voltages of 4V to 40V, delivering up to 200mA of output current. The LT3470 is optimized for 2-cell Li-Ion, wall adapter or automotive power sources. Burst Mode® operation reduces quiescent current to only 26uA, making it ideal for applications such as always-on automotive systems. The entire solution footprint is only 50mm2, making it ideal for space constrained applications.
The H-grade version operates up to a junction temperature of 150°C, compared to the E- and I-grade maximum junction temperature of 125°C. All electrical specifications are identical for the E-, I- and H-grade versions. The H- grade parts are both tested and guaranteed to the maximum junction temperature of 150°C. They are well suited for automotive and industrial applications, which are subjected to high ambient temperatures.
The LT3470HDDB is available from stock in a 2mm × 3mm DFN-8 package. Pricing starts at $3.07 each for 1,000 piece quantities.
Summary of Features: LT3470H
- Low Quiescent Current: 26uA at 12VIN to 3.3VOUT
- Integrated Boost and Catch Diodes
- Input Range: 4V to 40V
- Low Output Ripple: <10mV
- 200mA Output Current
- Hysteretic Mode Control
- Low Ripple Burst Mode® Operation at Light Loads
- Continuous Operation at Higher Loads
- Solution Size as Small as 50mm2
- 8-pin 2mm × 3mm DFN Package
40V, 200mA Step-Down DC/DC Converter w/ TJMAX = 150°C
Editor's Contact Information
- Doug Dickinson