Manufacturers > Texas Instruments > Application Notes > DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty

DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty

Texas Instruments

Published Date: 09/05/1999

Description

This design note details programming frequency and maximum duty cycle using the UC3842 and UC3842-A PWM oscillator ICs. Simplified equations are used to develop obtainable ranges for parameters over IC tolerances.

Parts

Part Number Name Companion Part
5962-8670401PA 5962-8670401PA Buy Datasheet
5962-8670401XA 5962-8670401XA Buy Datasheet
5962-8670405XA 5962-8670405XA Buy Datasheet
5962-8670406PA 5962-8670406PA Buy Datasheet
5962-8670406XA 5962-8670406XA Buy Datasheet
5962-8670407PA 5962-8670407PA Buy Datasheet
TL3842D TL3842D Buy Datasheet
TL3842PE4 TL3842PE4 Buy Datasheet
UC1842AJ UC1842AJ Buy Datasheet
UC1842AJ883B UC1842AJ883B Buy Datasheet
UC1842AL883B UC1842AL883B Buy Datasheet
UC1842J UC1842J Buy Datasheet
UC1842J883B UC1842J883B Buy Datasheet
UC1842L883B UC1842L883B Buy Datasheet
UC1842W UC1842W Buy Datasheet
UC1843AJ UC1843AJ Buy Datasheet
UC1843AJ883B UC1843AJ883B Buy Datasheet
UC1843AL883B UC1843AL883B Buy Datasheet
UC1843J UC1843J Buy Datasheet
UC1843J883B UC1843J883B Buy Datasheet
UC1843L883B UC1843L883B Buy Datasheet
UC1844AJ UC1844AJ Buy Datasheet
UC1844AJ883B UC1844AJ883B Buy Datasheet
UC1844AL883B UC1844AL883B Buy Datasheet
UC1844J UC1844J Buy Datasheet
UC1844J883B UC1844J883B Buy Datasheet
UC1844L883B UC1844L883B Buy Datasheet
UC1845AJ UC1845AJ Buy Datasheet
UC1845AJ883B UC1845AJ883B Buy Datasheet
UC1845AL883B UC1845AL883B Buy Datasheet
UC1845J UC1845J Buy Datasheet
UC1845J883B UC1845J883B Buy Datasheet
UC1845L UC1845L Buy Datasheet
UC1845L883B UC1845L883B Buy Datasheet
UC1845W UC1845W Buy Datasheet
UC1845W883B UC1845W883B Buy Datasheet
UC2842AD UC2842AD Buy Datasheet
UC2842AD UC2842AD Buy Datasheet
UC2842AD8 UC2842AD8 Buy Datasheet
UC2842AD8G4 UC2842AD8G4 Buy Datasheet
UC2842AD8TR UC2842AD8TR Buy Datasheet
UC2842AD8TRG4 UC2842AD8TRG4 Buy Datasheet
UC2842ADG4 UC2842ADG4 Buy Datasheet
UC2842ADTR UC2842ADTR Buy Datasheet
UC2842ADW UC2842ADW Buy Datasheet
UC2842ADWTR UC2842ADWTR Buy Datasheet
UC2842ADWTRG4 UC2842ADWTRG4 Buy Datasheet
UC2842AJ UC2842AJ Buy Datasheet
UC2842AN UC2842AN Buy Datasheet
UC2842ANG4 UC2842ANG4 Buy Datasheet
UC2842D UC2842D Buy Datasheet
UC2842D8 UC2842D8 Buy Datasheet
UC2842D8G4 UC2842D8G4 Buy Datasheet
UC2842D8TRG4 UC2842D8TRG4 Buy Datasheet
UC2842DTR UC2842DTR Buy Datasheet
UC2842N UC2842N Buy Datasheet
UC2842NG4 UC2842NG4 Buy Datasheet
UC2843AD UC2843AD Buy Datasheet
UC2843AD UC2843AD Buy Datasheet
UC2843AD8 UC2843AD8 Buy Datasheet
UC2843AD8G4 UC2843AD8G4 Buy Datasheet
UC2843AD8TR UC2843AD8TR Buy Datasheet
UC2843AD8TRG4 UC2843AD8TRG4 Buy Datasheet
UC2843ADG4 UC2843ADG4 Buy Datasheet
UC2843ADTR UC2843ADTR Buy Datasheet
UC2843AJ UC2843AJ Datasheet
UC2843AN UC2843AN Buy Datasheet
UC2843ANG4 UC2843ANG4 Buy Datasheet
UC2843AQ UC2843AQ Buy Datasheet
UC2843D UC2843D Buy Datasheet
UC2843D8 UC2843D8 Buy Datasheet
UC2843D8G4 UC2843D8G4 Buy Datasheet
UC2843D8TR UC2843D8TR Buy Datasheet
UC2843D8TRG4 UC2843D8TRG4 Buy Datasheet
UC2843DG4 UC2843DG4 Buy Datasheet
UC2843DTR UC2843DTR Buy Datasheet
UC2843DTRG4 UC2843DTRG4 Buy Datasheet
UC2843J UC2843J Buy Datasheet
UC2843N UC2843N Buy Datasheet
UC2843NG4 UC2843NG4 Buy Datasheet
UC2844AD UC2844AD Buy Datasheet
UC2844AD UC2844AD Buy Datasheet
UC2844AD8 UC2844AD8 Buy Datasheet
UC2844AD8G4 UC2844AD8G4 Buy Datasheet
UC2844AD8TR UC2844AD8TR Buy Datasheet
UC2844AD8TRG4 UC2844AD8TRG4 Buy Datasheet
UC2844ADG4 UC2844ADG4 Buy Datasheet
UC2844ADTR UC2844ADTR Buy Datasheet
UC2844ADTRG4 UC2844ADTRG4 Buy Datasheet
UC2844AN UC2844AN Buy Datasheet
UC2844ANG4 UC2844ANG4 Buy Datasheet
UC2844AQD8 UC2844AQD8 Buy Datasheet
UC2844AQD8R UC2844AQD8R Buy Datasheet
UC2844AQDR UC2844AQDR Buy Datasheet
UC2844D UC2844D Buy Datasheet
UC2844D8 UC2844D8 Buy Datasheet
UC2844D8G4 UC2844D8G4 Buy Datasheet
UC2844D8TR UC2844D8TR Buy Datasheet
UC2844DG4 UC2844DG4 Buy Datasheet
UC2844DTR UC2844DTR Buy Datasheet
UC2844NG4 UC2844NG4 Buy Datasheet
UC2845AD UC2845AD Buy Datasheet
UC2845AD UC2845AD Buy Datasheet
UC2845AD8 UC2845AD8 Buy Datasheet
UC2845AD8G4 UC2845AD8G4 Buy Datasheet
UC2845AD8TR UC2845AD8TR Buy Datasheet
UC2845AD8TRG4 UC2845AD8TRG4 Buy Datasheet
UC2845ADG4 UC2845ADG4 Buy Datasheet
UC2845ADTR UC2845ADTR Buy Datasheet
UC2845ADTRG4 UC2845ADTRG4 Buy Datasheet
UC2845ADW UC2845ADW Buy Datasheet
UC2845AN UC2845AN Buy Datasheet
UC2845ANG4 UC2845ANG4 Buy Datasheet
UC2845D UC2845D Buy Datasheet
UC2845D8 UC2845D8 Buy Datasheet
UC2845D8G4 UC2845D8G4 Buy Datasheet
UC2845D8TR UC2845D8TR Buy Datasheet
UC2845D8TRG4 UC2845D8TRG4 Buy Datasheet
UC2845DG4 UC2845DG4 Buy Datasheet
UC2845DTR UC2845DTR Buy Datasheet
UC2845J UC2845J Buy Datasheet
UC2845N UC2845N Buy Datasheet
UC2845NG4 UC2845NG4 Buy Datasheet
UC3842AD UC3842AD Buy Datasheet
UC3842AD UC3842AD Buy Datasheet
UC3842AD8 UC3842AD8 Buy Datasheet
UC3842AD8G4 UC3842AD8G4 Buy Datasheet
UC3842AD8TR UC3842AD8TR Buy Datasheet
UC3842AD8TRG4 UC3842AD8TRG4 Buy Datasheet
UC3842ADG4 UC3842ADG4 Buy Datasheet
UC3842ADTR UC3842ADTR Buy Datasheet
UC3842ADW UC3842ADW Buy Datasheet
UC3842ADWG4 UC3842ADWG4 Buy Datasheet
UC3842AN UC3842AN Buy Datasheet
UC3842ANG4 UC3842ANG4 Buy Datasheet
UC3842D UC3842D Buy Datasheet
UC3842D8G4 UC3842D8G4 Buy Datasheet
UC3842D8TR UC3842D8TR Buy Datasheet
UC3842DG4 UC3842DG4 Buy Datasheet
UC3842DTR UC3842DTR Buy Datasheet
UC3842J UC3842J Buy Datasheet
UC3842N UC3842N Buy Datasheet
UC3842NG4 UC3842NG4 Buy Datasheet
UC3843A-W UC3843A-W Datasheet
UC3843AD UC3843AD Buy Datasheet
UC3843AD UC3843AD Buy Datasheet
UC3843AD8 UC3843AD8 Buy Datasheet
UC3843AD8G4 UC3843AD8G4 Buy Datasheet
UC3843AD8TR UC3843AD8TR Buy Datasheet
UC3843AD8TRG4 UC3843AD8TRG4 Buy Datasheet
UC3843ADG4 UC3843ADG4 Buy Datasheet
UC3843ADTR UC3843ADTR Buy Datasheet
UC3843ADTRG4 UC3843ADTRG4 Buy Datasheet
UC3843AN UC3843AN Buy Datasheet
UC3843ANG4 UC3843ANG4 Buy Datasheet
UC3843D UC3843D Buy Datasheet
UC3843D8G4 UC3843D8G4 Buy Datasheet
UC3843D8TR UC3843D8TR Buy Datasheet
UC3843D8TRG4 UC3843D8TRG4 Buy Datasheet
UC3843DG4 UC3843DG4 Buy Datasheet
UC3843DTR UC3843DTR Buy Datasheet
UC3843NG4 UC3843NG4 Buy Datasheet
UC3843QTR UC3843QTR Datasheet
UC3844AD UC3844AD Buy Datasheet
UC3844AD UC3844AD Buy Datasheet
UC3844AD8 UC3844AD8 Buy Datasheet
UC3844AD8G4 UC3844AD8G4 Buy Datasheet
UC3844AD8TR UC3844AD8TR Buy Datasheet
UC3844AD8TRG4 UC3844AD8TRG4 Buy Datasheet
UC3844ADG4 UC3844ADG4 Buy Datasheet
UC3844ADTR UC3844ADTR Buy Datasheet
UC3844ADTRG4 UC3844ADTRG4 Buy Datasheet
UC3844AN UC3844AN Buy Datasheet
UC3844ANG4 UC3844ANG4 Buy Datasheet
UC3844D UC3844D Buy Datasheet
UC3844D8 UC3844D8 Buy Datasheet
UC3844D8G4 UC3844D8G4 Buy Datasheet
UC3844D8TR UC3844D8TR Buy Datasheet
UC3844D8TRG4 UC3844D8TRG4 Buy Datasheet
UC3844DG4 UC3844DG4 Buy Datasheet
UC3844DTR UC3844DTR Buy Datasheet
UC3844DTRG4 UC3844DTRG4 Buy Datasheet
UC3844NG4 UC3844NG4 Buy Datasheet
UC3845AD UC3845AD Buy Datasheet
UC3845AD UC3845AD Buy Datasheet
UC3845AD8 UC3845AD8 Buy Datasheet
UC3845AD8G4 UC3845AD8G4 Buy Datasheet
UC3845AD8TR UC3845AD8TR Buy Datasheet
UC3845AD8TRG4 UC3845AD8TRG4 Buy Datasheet
UC3845ADG4 UC3845ADG4 Buy Datasheet
UC3845ADTR UC3845ADTR Buy Datasheet
UC3845ADTRG4 UC3845ADTRG4 Buy Datasheet
UC3845AJ UC3845AJ Buy Datasheet
UC3845AN UC3845AN Buy Datasheet
UC3845ANG4 UC3845ANG4 Buy Datasheet
UC3845D UC3845D Buy Datasheet
UC3845D8 UC3845D8 Buy Datasheet
UC3845D8G4 UC3845D8G4 Buy Datasheet
UC3845D8TR UC3845D8TR Buy Datasheet
UC3845D8TRG4 UC3845D8TRG4 Buy Datasheet
UC3845DG4 UC3845DG4 Buy Datasheet
UC3845DTR UC3845DTR Buy Datasheet
UC3845DTRG4 UC3845DTRG4 Buy Datasheet
UC3845N UC3845N Buy Datasheet
UC3845NG4 UC3845NG4 Buy Datasheet

Application Note

Download application note for DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty by Texas Instruments