HV450 Datasheet, PDF (1/4 Pages) Supertex, Inc – High-Voltage Ring Generator

HV450
High-Voltage Ring Generator
Ordering Information
Operating Voltage
V_NN1
-220V
Package Options
SOW-16
HV450WG
Features
❏ Integrated high voltage transistors
❏ 67V_RMS ring signal
❏ Output over current protection
❏ Can drive external MOSFETs for larger loads
Applications
❏ High voltage ring generator
❏ Set-top/Street box ring generator
❏ Pair gain ring generator
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 P_IN and N_IN. For application
where a single control pin (N_IN) 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 N_IN 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 V_DD. The high voltage outputs have pulse by pulse
over current protection.
Pin Configuration
Absolute Maximum Ratings*
V_NN1, power supply voltage
V_PP, P-channel gate voltage supply
V_NN2, N-channel gate voltage supply
V_DD, logic supply
Storage temperature
Power dissipation
-240V
-20V
V_NN1+20V
+7.5V
-65°C to +150°C
600mW
* All voltages referenced to ground
N/C ¹
P_GND 2
GND 3
Mode 4
P_IN
5
N_IN
6
EN 7
V_DD 8
top view
SOW-16
16
V_PP
15 P_GATE
14 V_PSEN
13 HV_OUT
12 V_NSEN
11 N_GATE
10 V_NN2
9
V_NN1
12/13/01
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and s₁pecifications are subject to change without notice. For the latest product specifications, refer to the
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.