HV450

HV450 High-Voltage Ring Generator Ordering Information Operating Voltage VNN1 -220V Package Options SOW-16 HV450WG Features ❏ Integrated high voltage transistors ❏ 67VRMS ring signal ❏ Output over current protection ❏ Can drive external MOSFETs for larger loads General Description The Supertex HV450 is a PWM high voltage ring generator. The high voltage output P- and N-channel transistors are controlled independently by the logic inputs PIN and NIN. For application where a single control pin (NIN) is desired, the mode pin should be connected to Gnd. This adds a 200ns deadband on the control logic to avoid cross conduction on the high voltage output. A logic high on NIN will turn the high voltage P-Channel on and the N-Channel off. The outputs can drive up to 5 RENs. The HV450 can drive external MOSFETs for applications requiring larger loads. The IC can be powered down by connecting the enable pin to VDD. The high voltage outputs have pulse by pulse over current protection. Applications ❏ ❏ ❏ High voltage ring generator Set-top/Street box ring generator Pair gain ring generator Pin Configuration N/C PGND GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VPP PGATE VPSEN HVOUT VNSEN NGATE VNN2 VNN1 Absolute Maximum Ratings* VNN1, power supply voltage VPP, P-channel gate voltage supply VNN2, N-channel gate voltage supply VDD, logic supply Storage temperature Power dissipation * All voltages referenced to ground Mode PIN -240V -20V VNN1+20V +7.5V -65°C to +150°C 600mW NIN E...