ZHCSN39A February 2020 – November 2021 LM61480 , LM61495 , LM62460
PRODUCTION DATA
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| OSCILLATOR (RT and SYNC PINS) | ||||||
| fOSC | Internal oscillator frequency | RT = GND | 1.90 | 2.2 | 2.42 | MHz |
| fOSC | Internal oscillator frequency | RT = VCC | 350 | 400 | 440 | kHz |
| fFIXED_2.2MHz | Oscillator frequency measured using maximum value of RT resistor to select 2.2 MHz | RT = 6.81 k? | 1.95 | 2.2 | 2.42 | MHz |
| fFIXED_0.4MHz | Oscillator frequency measured using minimum value of RT resistor to select 0.4 MHz | RT = 40.2 k? | 352 | 400 | 448 | kHz |
| fADJ | Center trim oscillator frequency | RT = 22.6 kΩ | 630 | 700 | 770 | kHz |
| SPREAD SPECTRUM | ||||||
| ΔFc+ | Frequency increase of internal oscillator from spread spectrum | 1% | 4% | 7.5% | ||
| ΔFc- | Frequency decrease of internal oscillator from spread spectrum | –8% | –4% | –1% | ||
| SWITCH NODE | ||||||
| DMAX | Maximum switch duty cycle | While in frequency foldback | 98% | |||
| fSW =1.85 MHz | 87% | |||||