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

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

Texas Instruments

Published : 05 Sep 99
Application Notes
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
UC3843ANG4
UC3843ANG4
Datasheet Buy
UC3845AD8
UC3845AD8
Datasheet Buy
UC2843AQ
UC2843AQ
Datasheet Buy
UC2844ANG4
UC2844ANG4
Datasheet Buy
UC1842AJ
UC1842AJ
Datasheet Buy
UC2845AD8TRG4
UC2845AD8TRG4
Datasheet Buy
UC2843N
UC2843N
Datasheet Buy
UC2843DTRG4
UC2843DTRG4
Datasheet Buy
UC3844DG4
UC3844DG4
Datasheet Buy
Datasheet
UC2843AJ
UC2843AJ
Datasheet
UC3845N
UC3845N
Datasheet Buy
5962-8670401XA
5962-8670401XA
Datasheet Buy
UC2845ADG4
UC2845ADG4
Datasheet Buy
UC2845D8TRG4
UC2845D8TRG4
Datasheet Buy
UC3844ADTRG4
UC3844ADTRG4
Datasheet Buy
UC2842ADWTR
UC2842ADWTR
Datasheet Buy
UC3842AD
UC3842AD
Datasheet Buy
UC3845ADTRG4
UC3845ADTRG4
Datasheet Buy
Datasheet
UC2845DG4
UC2845DG4
Datasheet Buy
UC2843AD8
UC2843AD8
Datasheet Buy
UC3843AN
UC3843AN
Datasheet Buy
TL3842D
TL3842D
Datasheet Buy
UC3845ADG4
UC3845ADG4
Datasheet Buy
UC2843D8TR
UC2843D8TR
Datasheet Buy
UC3845DTR
UC3845DTR
Datasheet Buy
UC2844AD8G4
UC2844AD8G4
Datasheet Buy
UC2842ADW
UC2842ADW
Datasheet Buy
Datasheet
UC2842AD8TR
UC2842AD8TR
Datasheet Buy
UC2842AN
UC2842AN
Datasheet Buy
UC3844AN
UC3844AN
Datasheet Buy
UC2845D8
UC2845D8
Datasheet Buy
UC3845D
UC3845D
Datasheet Buy
UC3845NG4
UC3845NG4
Datasheet Buy
UC2843D
UC2843D
Datasheet Buy
UC2843D8
UC2843D8
Datasheet Buy
UC1843AL883B
UC1843AL883B
Datasheet Buy
UC2844AD8
UC2844AD8
Datasheet Buy
UC1842J
UC1842J
Datasheet Buy
UC3843QTR
UC3843QTR
Datasheet
UC2844D8G4
UC2844D8G4
Datasheet Buy
UC3842ADTR
UC3842ADTR
Datasheet Buy
UC3843AD
UC3843AD
Datasheet Buy
UC3843NG4
UC3843NG4
Datasheet Buy
UC2843DG4
UC2843DG4
Datasheet Buy
UC2842AJ
UC2842AJ
Datasheet Buy
UC2842ADG4
UC2842ADG4
Datasheet Buy
UC3843AD8G4
UC3843AD8G4
Datasheet Buy
Datasheet
UC2845N
UC2845N
Datasheet Buy
UC2844AD8TR
UC2844AD8TR
Datasheet Buy
UC1845L
UC1845L
Datasheet Buy
UC3843DTR
UC3843DTR
Datasheet Buy
UC3842N
UC3842N
Datasheet Buy
UC3844D
UC3844D
Datasheet Buy
UC2844AQD8
UC2844AQD8
Datasheet Buy
UC2843AN
UC2843AN
Datasheet Buy
UC2844D8TR
UC2844D8TR
Datasheet Buy
UC1844J
UC1844J
Datasheet Buy
UC1845W883B
UC1845W883B
Datasheet Buy
UC3845AD
UC3845AD
Datasheet Buy
UC2845AD8TR
UC2845AD8TR
Datasheet Buy
UC2842D
UC2842D
Datasheet Buy
UC2845DTR
UC2845DTR
Datasheet Buy
UC3845AN
UC3845AN
Datasheet Buy
Datasheet
UC2843AD8TR
UC2843AD8TR
Datasheet Buy
UC3842ADG4
UC3842ADG4
Datasheet Buy
UC3845ADTR
UC3845ADTR
Datasheet Buy
UC2844AD
UC2844AD
Datasheet Buy
UC3845D8TR
UC3845D8TR
Datasheet Buy
UC2844DTR
UC2844DTR
Datasheet Buy
UC3842ADW
UC3842ADW
Datasheet Buy
UC3844AD8TRG4
UC3844AD8TRG4
Datasheet Buy
UC3844D8TR
UC3844D8TR
Datasheet Buy
UC1845AL883B
UC1845AL883B
Datasheet Buy
UC2842AD8TRG4
UC2842AD8TRG4
Datasheet Buy
UC2844AQD8R
UC2844AQD8R
Datasheet Buy
Datasheet
UC3845AJ
UC3845AJ
Datasheet Buy
UC3843D
UC3843D
Datasheet Buy
UC3844NG4
UC3844NG4
Datasheet Buy
UC2842ADTR
UC2842ADTR
Datasheet Buy
UC3843ADTRG4
UC3843ADTRG4
Datasheet Buy
UC2842D8TRG4
UC2842D8TRG4
Datasheet Buy
UC2845ADW
UC2845ADW
Datasheet Buy
UC3845AD8TRG4
UC3845AD8TRG4
Datasheet Buy
Datasheet
UC3844ANG4
UC3844ANG4
Datasheet Buy
UC3843DG4
UC3843DG4
Datasheet Buy
UC3844DTRG4
UC3844DTRG4
Datasheet Buy
UC1845AJ883B
UC1845AJ883B
Datasheet Buy
UC2842ANG4
UC2842ANG4
Datasheet Buy
UC3842AD8
UC3842AD8
Datasheet Buy
UC3842D8G4
UC3842D8G4
Datasheet Buy
UC1844L883B
UC1844L883B
Datasheet Buy
UC1842AL883B
UC1842AL883B
Datasheet Buy
UC2843ADG4
UC2843ADG4
Datasheet Buy
UC3842J
UC3842J
Datasheet Buy
UC3842D8TR
UC3842D8TR
Datasheet Buy
Datasheet
UC2845D8TR
UC2845D8TR
Datasheet Buy
UC1842J883B
UC1842J883B
Datasheet Buy
UC2843ANG4
UC2843ANG4
Datasheet Buy
UC1845AJ
UC1845AJ
Datasheet Buy
UC2842AD
UC2842AD
Datasheet Buy
Datasheet
Datasheet
UC3844AD8TR
UC3844AD8TR
Datasheet Buy
UC2845D
UC2845D
Datasheet Buy
5962-8670401PA
5962-8670401PA
Datasheet Buy
UC3843ADTR
UC3843ADTR
Datasheet Buy
UC3843ADG4
UC3843ADG4
Datasheet Buy
UC3842ADWG4
UC3842ADWG4
Datasheet Buy
UC3844AD
UC3844AD
Datasheet Buy
UC3845DG4
UC3845DG4
Datasheet Buy
UC3843AD8
UC3843AD8
Datasheet Buy
UC1843J
UC1843J
Datasheet Buy
UC3845AD8TR
UC3845AD8TR
Datasheet Buy
UC3845D8
UC3845D8
Datasheet Buy
5962-8670407PA
5962-8670407PA
Datasheet Buy
UC3842AD8TR
UC3842AD8TR
Datasheet Buy
UC3845D8G4
UC3845D8G4
Datasheet Buy
UC1844J883B
UC1844J883B
Datasheet Buy
Datasheet
UC2842D8
UC2842D8
Datasheet Buy
UC2842AD8G4
UC2842AD8G4
Datasheet Buy
UC3843D8TRG4
UC3843D8TRG4
Datasheet Buy
5962-8670406XA
5962-8670406XA
Datasheet Buy
UC2843AD
UC2843AD
Datasheet Buy
UC3842AN
UC3842AN
Datasheet Buy
5962-8670406PA
5962-8670406PA
Datasheet Buy
UC3842D
UC3842D
Datasheet Buy
UC3844AD8G4
UC3844AD8G4
Datasheet Buy
UC3844D8
UC3844D8
Datasheet Buy
Datasheet
UC2844D
UC2844D
Datasheet Buy
Datasheet
UC3845ANG4
UC3845ANG4
Datasheet Buy
UC2844DG4
UC2844DG4
Datasheet Buy
UC3845AD8G4
UC3845AD8G4
Datasheet Buy
UC2844AN
UC2844AN
Datasheet Buy
UC2845J
UC2845J
Datasheet Buy
5962-8670405XA
5962-8670405XA
Datasheet Buy
UC3845D8TRG4
UC3845D8TRG4
Datasheet Buy
UC2845AD8G4
UC2845AD8G4
Datasheet Buy
UC2842DTR
UC2842DTR
Datasheet Buy
UC3842AD8G4
UC3842AD8G4
Datasheet Buy
UC3844ADTR
UC3844ADTR
Datasheet Buy
UC2842N
UC2842N
Datasheet Buy
Datasheet
UC2845AD
UC2845AD
Datasheet Buy
UC2844NG4
UC2844NG4
Datasheet Buy
UC3843A-W
UC3843A-W
Datasheet
UC2842AD8
UC2842AD8
Datasheet Buy
UC3842AD
UC3842AD
Datasheet Buy
UC3843AD
UC3843AD
Datasheet Buy
UC3844AD
UC3844AD
Datasheet Buy
UC3845AD
UC3845AD
Datasheet Buy
UC2842AD
UC2842AD
Datasheet Buy
UC2843AD
UC2843AD
Datasheet Buy
UC2844AD
UC2844AD
Datasheet Buy
UC2845AD
UC2845AD
Datasheet Buy
UC2845D8G4
UC2845D8G4
Datasheet Buy
UC3844D8G4
UC3844D8G4
Datasheet Buy
UC1845J883B
UC1845J883B
Datasheet Buy
UC3844ADG4
UC3844ADG4
Datasheet Buy
UC1845J
UC1845J
Datasheet Buy
UC2844AD8TRG4
UC2844AD8TRG4
Datasheet Buy
UC1843AJ
UC1843AJ
Datasheet Buy
UC2843ADTR
UC2843ADTR
Datasheet Buy
UC1844AL883B
UC1844AL883B
Datasheet Buy
UC3843D8TR
UC3843D8TR
Datasheet Buy
UC3843D8G4
UC3843D8G4
Datasheet Buy
UC2843DTR
UC2843DTR
Datasheet Buy
UC2845ADTRG4
UC2845ADTRG4
Datasheet Buy
UC2845ANG4
UC2845ANG4
Datasheet Buy
UC2845AD8
UC2845AD8
Datasheet Buy
UC2844ADG4
UC2844ADG4
Datasheet Buy
UC1844AJ
UC1844AJ
Datasheet Buy
UC2843NG4
UC2843NG4
Datasheet Buy
UC3842DG4
UC3842DG4
Datasheet Buy
UC1845W
UC1845W
Datasheet Buy
UC2843AD8G4
UC2843AD8G4
Datasheet Buy
UC1843L883B
UC1843L883B
Datasheet Buy
UC2845AN
UC2845AN
Datasheet Buy
UC3842AD8TRG4
UC3842AD8TRG4
Datasheet Buy
UC1842AJ883B
UC1842AJ883B
Datasheet Buy
UC3844D8TRG4
UC3844D8TRG4
Datasheet Buy
UC3843AD8TRG4
UC3843AD8TRG4
Datasheet Buy
UC1843J883B
UC1843J883B
Datasheet Buy
UC2844ADTRG4
UC2844ADTRG4
Datasheet Buy
UC2842ADWTRG4
UC2842ADWTRG4
Datasheet Buy
UC2844AQDR
UC2844AQDR
Datasheet Buy
UC3843AD8TR
UC3843AD8TR
Datasheet Buy
UC2842NG4
UC2842NG4
Datasheet Buy
UC2843D8TRG4
UC2843D8TRG4
Datasheet Buy
UC2844ADTR
UC2844ADTR
Datasheet Buy
UC2843D8G4
UC2843D8G4
Datasheet Buy
UC1845L883B
UC1845L883B
Datasheet Buy
UC2845ADTR
UC2845ADTR
Datasheet Buy
UC2843AD8TRG4
UC2843AD8TRG4
Datasheet Buy
UC2842D8G4
UC2842D8G4
Datasheet Buy
UC3842NG4
UC3842NG4
Datasheet Buy
UC1844AJ883B
UC1844AJ883B
Datasheet Buy
UC3844AD8
UC3844AD8
Datasheet Buy
UC1842W
UC1842W
Datasheet Buy
UC1842L883B
UC1842L883B
Datasheet Buy
TL3842PE4
TL3842PE4
Datasheet Buy
UC2845NG4
UC2845NG4
Datasheet Buy
UC2844D8
UC2844D8
Datasheet Buy
UC3844DTR
UC3844DTR
Datasheet Buy
UC3842DTR
UC3842DTR
Datasheet Buy
UC3842ANG4
UC3842ANG4
Datasheet Buy
UC1843AJ883B
UC1843AJ883B
Datasheet Buy
UC3845DTRG4
UC3845DTRG4
Datasheet Buy
UC2843J
UC2843J
Datasheet Buy
Application Note
Download application note for DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty by Texas Instruments
Application Note

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