HV9919 Supertex, Inc., HV9919 Datasheet
HV9919
Manufacturer Part Number
HV9919
Description
Manufacturer
Supertex, Inc.
Datasheet
1.HV9919.pdf
(7 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HV9919BK7-G
Manufacturer:
SAMSUNG
Quantity:
2 672
Part Number:
HV9919BK7-G
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Features
►
►
►
►
►
►
►
►
►
Applications
►
►
►
►
Typical Application Circuit
Hysteretic control with high-side current sensing
Wide input voltage range: 4.5 to 40V
>90% Efficiency
Typical ±5% LED current accuracy
Up to 2.0MHz switching frequency
Adjustable constant LED current
Analog or PWM control signal for PWM dimming
Over-temperature protection
-40ºC to +125ºC operating temperature range
Low voltage industrial and architectural lighting
General purpose constant current source
Signage and decorative LED lighting
Indicator and emergency lighting
Hysteretic, Buck, High Brightness LED Driver
0 - 2.0V
with High-Side Current Sensing
C
IN
CS
RAMP
ADIM
DIM
HV9919
VIN
General Description
The HV9919 is a PWM controller IC designed to drive high
brightness LEDs using a buck topology. It operates from an
input voltage of 4.5 to 40VDC and employs hysteretic control
with a high-side current sense resistor to set the constant
output current.
The operating frequency range can be set by selecting the
proper inductor. Operation at high switching frequency is
possible since the hysteretic control maintains accuracy even
at high frequencies. This permits the use of small inductors
and capacitors minimizing space and cost in the overall
system.
LED brightness control is achieved with PWM dimming from
an analog or PWM input signal. Unique PWM circuitry allows
true constant color with a high dimming range. The dimming
frequency is programmed using a single external capacitor.
The HV9919 comes in a small, 8-lead DFN package and is
ideal for industrial and general lighting applications.
R
GATE
SENSE
GND
VDD
L
HV9919
Related parts for HV9919
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
600mA Iout, 7.5kV Vrrm General Purpose Silicon Rectifier
Manufacturer:
HV Component Associates, Inc.
Part Number:
Description:
HV Low lq LDO, -40C to +125C, 8-SOIC 150mil, TUBE
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
Supertex Driver Evaluation Board for Osram Ostar
Manufacturer:
Supertex, Inc.
Part Number:
Description:
32-channel Serial To Parallel Converter With High Voltage Push-pull Outputs - Supertex, Inc
Manufacturer:
Supertex, Inc.
Datasheet:
Part Number:
Description:
Manufacturer:
Supertex, Inc.
Datasheet: