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HV7100NG-GM903 Datasheet(PDF) 7 Page - Supertex, Inc

Part No. HV7100NG-GM903
Description  24/48V Fan Driver/Controller With High-Side Drive
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Maker  SUTEX [Supertex, Inc]
Homepage  http://www.supertex.com
Logo SUTEX - Supertex, Inc

HV7100NG-GM903 Datasheet(HTML) 7 Page - Supertex, Inc

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Supertex inc.
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Doc.# DSFP-HV7100
B072413
HV7100
Pin Description
Pin #
Function
Description
1
VDD
Output of an internal linear voltage regulator, which in turn is powered by V
PP. It provides
power to the internal low-side (ground referenced) circuitry. An external voltage may be
applied to this pin, provided it is higher than 3.6V but less than 5.5V. Bypass this pin with a
100nF ceramic capacitor to ground.
2
LIN
A DC voltage ranging from 0.5 to 2.5V sets the duty cycle of the gate output from 0% to 100%.
This input is immune to moderate noise on the control signal.
3
DIN0
Applying 0000 to 1111 to these logic input pins sets the duty cycle of the gate output from 0 to
100%. A 1-bit increment is equal to 6.67% increment in duty cycle. See Table 1 on page 5.
4
DIN1
5
DIN2
6
DIN3
7
EN
Enable input. A logic high applied to this input enables the output.
8
GND
Ground return for all the internal circuitry. This pin must be electrically connected to the ground
of the power train and logic return.
9
CT
In conjunction with RT, a capacitor from this pin to ground sets PWM frequency. A triangle
wave appears on this pin, with an amplitude of 0.5 - 2.5V and at the PWM frequency.
10
RT
In conjunction with CT, a resistor from this pin to ground sets PWM frequency.
11
VGATE
This is the output pin of the internal linear regulator that biases the gate drive circuit. Bypass
with 100nF ceramic capacitor to VPP.
12
VPP1
Supply voltage pins. Both must be connected to the supply voltage (+24V/+48V). Connect
together as close as possible to the IC. Bypass locally with a ceramic capacitor to ground.
13
VPP2
14
OUT
This pin is the output gate driver for an external P-channel power MOSFET.


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