HV9930 Datasheet, PDF (3/7 Pages) Supertex, Inc – Hysteretic Boost-Buck (Cuk) LED Driver ICs

HV9930
Gate
I_SOURCE GATE short circuit current, sourcing 0.165
A
V_GATE = 0V; V_DD = 7.5V
I_SINK
GATE sinking current
0.165
A
V_GATE = 10V ; V_DD = 7.5V
T_RISE GATE output rise time
30
50
ns C_GATE = 500pF; V_DD = 7.5V
T_FALL GATE output fall time
30
50
ns C_GATE = 500pF; V_DD = 7.5 V
Input Current Sense Comparator
V_TURNON1 Voltage required to turn GATE on^*
88
100
112
mV
CS2 = 200mV ; CS1 increasing ;
GATE goes LOW to HIGH
V_TURNOFF1 Voltage required to turn GATE off^*
-12
0
12
mV
CS2 = 200mV ; CS1 decreasing ;
GATE goes HIGH to LOW
T_{D1, ON} Delay to Output (turn-on)
CS2=200mV ;
150
250
ns
CS1 = 50mV to 200mV step
T_{D1, OFF} Delay to Output (turn-on)
CS2=200mV ;
150
250
ns
CS1 = 50mV to –100mV step
Output Current Sense Comparator
V_TURNON2 Voltage required to turn GATE on^*
88
100
112
mV
CS1 = 200mV ; CS2 increasing ;
GATE goes LOW to HIGH
V_TURNOFF2 Voltage required to turn GATE off^*
-12
0
12
mV
CS1 = 200mV ; CS2 decreasing ;
GATE goes HIGH to LOW
T_{D2, ON} Delay to Output (turn-on)
CS1=200mV ;
150
250
ns
CS2 = 50mV to 200mV step
T_{D2, OFF} Delay to Output (turn-on)
CS1=200mV ;
150
250
ns
CS2 = 50mV to –100mV step
1 _{Also limited by package power dissipation limit, whichever is lower.}
Pinout
Pin Description
V_IN – This pin is the input of a 8-200V voltage regulator.
V_DD – This is a power supply pin for all internal circuits. It
must be bypassed with a low ESR capacitor to GND.
GATE – This pin is the output gate driver for an external N-
channel power MOSFET.
GND – Ground return for all the internal circuitry. This pin
must be electrically connected to the ground of the power
train.
REF – This pin provides accurate reference voltage. It must
be bypassed with a 0.01-0.1uF capacitor to GND.
PWM – When this pin is pulled to GND, switching of the
HV9930 is disabled. When the PWM pin is released, or
external TTL high level is applied to it, switching will
resume. This feature is provided for applications that require
PWM dimming of the LED lamp.
CS1 and CS2 – These pins are used to sense the input and
output currents of the boost-buck converter. They are the
non-inverting inputs of the internal comparators.
3
A090805