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HT77XX PFM Step-up DC-DC
Converter
Revision # 1.80 Modifications
made on September 24, 2008
- In the Features section, Selection Table section and other related sections, the package SOT25 name changed to SOT23-5.
- In the Typical Performance Characteristics section, HT7718 series diagram, was modified.
- In the Application Circuits, the Inductor type information was added.
- The Package Information section was modified.
- The Product Tape and Reel Specifications section was modified.
Revision # 1.70 Modifications
made on March 13, 2008
- The Features section was modified.
Revision # 1.60 Modifications
made on September 12, 2007
- In the Features, General Description and other related sections, a new HT7718 (1.8V) device was added.
- The Electrical Characteristics section was modified.
- The Test Circuit section was added.
- The Application Circuits section was modified.
Revision # 1.50 Modifications
made on April 23, 2007
- In the application circuits the Part Number of the Schottky diode has been changed to 1N5817.
Revision # 1.40 Modifications
made on April 11, 2007
- The Application Circuits diagram was modified.
Revision # 1.30 Modifications
made on January 16, 2007
- The Vin values on the Load Transient Response graphs for the HT7727, HT7730, HT7733, HT7737 were modified.
Revision # 1.20 Modifications
made on August 29, 2006
- In the Features, Pin Assignment and other related sections, a 3-pin SOT23 package was added.
- In the Absolute Maximum Ratings section, the Operating Temperature range was changed from
0oC~70oC to -40oC~85oC and a new title called, Package Thermal Resistance, was added.
- The Typical Performance Characteristic Graphs have been modified.
- The Application Circuit capacitors were modified.
Revision # 1.11 Modifications
made on July 3, 2006
- At the Features section, the Low start-up voltage was modified.
Revision # 1.10 Modifications
made on March 7, 2006
- In the Application Circuits, under the SOT-25 diagram a
note was added.
Revision
# 1.00 This was posted on March 8, 2005
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