Datasheet VIPER222 (STMicroelectronics) - 7

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VIPER222 Electrical characteristics Symbol Parameter Test Condition Min. Typ. Max. Unit
VIPER222XSTR 220 ms Maximum overload delay FOSC = FOSCmin tOVLmax time VIPER222LSTR 440 FOSC = FOSCmin tSS Soft-start time 5 11 ms tCC_FAIL Clamp time before shutdown 325 500 675 µs VIPER222XSTR 27 30 33 FOSC Switching frequency kHz VIPER222LSTR 54 60 66 Minimum switching FOSCmin 13.5 15 16.5 kHz frequency FD Modulation depth (1) ±7 kHz FM Modulationfrequency (1) 260 Hz DMAX Max. duty cycle (1) 70 80 % VREF E/A reference voltage 1.175 1.2 1.225 V IPULL UP EA-IN pin current pull-up -1 µA GM E/A Trans conductance (1) 0.5 mA/V VEA-SAT EA-OUT pin saturation limit 3 V VEA-BM Burstmode threshold 0.8 V VEA-OUT =2.7V RDYN Dynamic resistance 65 kΩ VEA-IN =GND HEA-OUT ΔVEA-OUT / ΔID (1) 3.8 7 V/A IEA-OUT EA-OUT pin source / sink current 100 µA TSD Thermal shutdown temperature (1) 150 160 °C 1. Specification assured by characterization.
DS13192
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Rev 2 page 7/20
Document Outline Cover image Product status link / summary Features Application Description 1 Pin setting 2 Typical power capability 3 Electrical and thermal ratings 4 Electrical characteristics 5 Typical electrical characteristics 6 General description 6.1 Startup 6.2 Feedback loop 6.3 Pulse skipping 6.4 Burst mode at light load 6.5 Short-circuit protection 6.6 VCC clamp protection 7 Basic application schematics 8 Package information 8.1 SSOP10 package information Revision history Contents List of tables List of figures