JAJS772E June 1999 – July 2018 LM2574 , LM2574HV
PRODUCTION DATA.
THERMAL METRIC(1)(2) | LM2574, LM2574HV | UNIT | |||
---|---|---|---|---|---|
P (PDIP) | NPA (SOIC) | ||||
8 PINS | 14 PINS | ||||
RθJA | Junction-to-ambient thermal resistance(3) | 60.4 | 77.1 | °C/W | |
RθJC(top) | Junction-to-case (top) thermal resistance(3) | 59.9 | 29.2 | °C/W | |
RθJB | Junction-to-board thermal resistance(3) | 37.9 | 33.3 | °C/W | |
ψJT | Junction-to-top characterization parameter | 17.1 | 2 | °C/W | |
ψJB | Junction-to-board characterization parameter | 37.7 | 32.8 | °C/W | |
RθJC(bot) | Junction-to-case (bottom) thermal resistance(3) | — | — | °C/W |