HV9910Q8 Datasheet PDF - CYStech Electronics


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HV9910Q8
CYStech Electronics

Part Number HV9910Q8
Description Universal High Brightness LED Driver
Page 7 Pages

HV9910Q8 datasheet pdf
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CYStech Electronics Corp.
Universal High Brightness LED Driver
HV9910Q8
Spec. No. : C194Q8
Issued Date : 2013.05.31
Revised Date :
Page No. : 1/7
Features
>90% efficiency
10V to 600V input range
Constant current LED driver
Applications from a few mA to more than 1A output
LED string from one to hundreds of diodes
Linear and PWM dimming capability
Input voltage surge ratings up to 600V
Over temperature protection
Applications
DC/DC or AC/DC LED driver applications
RGB backlighting LED driver
Backlighting of flat panel displays
General-purpose constant current source
Signage and decorative LED lighting
Automotive
Chargers
Description
The HV9910Q8 is a PWM high-efficiency LED driver control IC. It allows efficient operation of high-brightness
(HB) LEDs from voltage sources ranging from 10VDC up to 600VDC. The HV9910Q8 controls an external
MOSFET at fixed switching frequencies up to 300kHz. The frequency can be programmed using a single resistor.
The LED string is driven at a constant current rather than a constant voltage, thus providing a constant light output
and an enhanced reliability. The output current can be programmed between a few milliamps and up to more than
1A. The HV9910Q8 uses a rugged high-voltage junction isolated process that can withstand an input voltage
surge up to 600V. The output current to a LED string can be programmed to any value between zero and its
maximum value by applying an external control voltage at the linear dimming control input of the HV9910Q8.
The HV9910Q8 provides a low-frequency PWM dimming input that can accept an external control signal with a
duty ratio of 0-100% and a frequency of up to a few kilohertz.
Ordering Information
Device
HV9910Q8-0-T3-G
Package
Shipping
SOP-8
(Pb-free lead plating and halogen-free package)
2500 pcs / tape & reel
HV9910Q8 Preliminar
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CYStech Electronics Corp.
Typical Application Circuit
Spec. No. : C194Q8
Issued Date : 2013.05.31
Revised Date :
Page No. : 2/7
Pin Description
8765
1 2 34
Pin1: VIN
Pin2: CS
Pin3: Ground
Pin4: Gate
Pin5: PWM_D
Pin6: VDD
Pin7: LD
Pin8: Rosc
Absolute Maximum Ratings
Vin to GN..……………………………………………………………………………………-0.5~+600V
CS, LD, PWM_D, GATE to GND ………………………………………………… -0.3 V ~ VDD+0.3V
Continuous power dissipation (TA=25°C)………………………………………………………..630mW
Operating temperature range …………………………………………………………………- 40~+85°C
Junction temperature ……………………………………………………………………………...+125°C
Storage temperature range ………………………………………………………………….-65 ~ +150°C
*Stress beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the
specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
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CYStech Electronics Corp.
Spec. No. : C194Q8
Issued Date : 2013.05.31
Revised Date :
Page No. : 3/7
Electrical Characteristics (TA=25°C, unless otherwise noted)
Parameter
Test Condition
Symbol Min. Typ. Max. Unit
Input DC supply voltage range
Shut down mode supply current
Internally regulated voltage
Load regulation of VDD
DC input voltage
Pin PWM_D to GND,
VIN=8V
VIN=10 to 600V, IDD(ext)=0,
pin Gate open
IDD(ext)=0 to 1mA, 500pF at
GATE, ROSC=226k
Ω,PWM_D=VDD
VINDC *
IINSD
VDD
VDD, load
10
0.5
7
0
- 600 V
- 1 mA
7.5 8 V
- 100 mV
Maximum pin VDD voltage
When an external voltage is
applied to pin VDD
VDD, max
-
- 10 V
VDD current available for external
circuitry
VIN=10 to 100V
IDD(ext) - - 0.7 mA
VDD under voltage lockout threshold VIN rising
UVLO 6.45 6.7 6.95 V
VDD under voltage lockout hysteresis VIN falling
UVLO - 500 - mV
Pin PWM_D input low voltage
VIN=10 to 600V
VEN(lo) - - 0.8 V
Pin PWM_D input high voltage
VIN=10 to 600V
VEN(hi) 2 - - V
Pin PWM_D pull down resistance VEN=5V
REN 50 100 150 kΩ
Current sense pull-in threshold
voltage
TA=-40°C ~ +85°C
VCS(hi)
225 250 275 mV
GATE high output voltage
IOUT=10mA
VGATE(hi) VDD-0.3 - VDD V
GATE low output voltage
IOUT=-10mA
VGATE(lo)
0
- 0.3 V
Oscillator frequency
ROSC=1MΩ
ROSC=226kΩ
fOSC
20
80
25
100
30
120
kHz
Maximum oscillator PWM duty cycle
Pin LD(Linear Dimming) voltage
range
Current sense blanking interval
Delay from CS to GATE lo
GATE output rise time
GATE output fall time
FPWMhf=25kHz, at GATE,
CS to GND
TA<85°C, VIN=12V
VCS=0.55VLD, VLD=VDD
VIN=12V, VLD=0.15V,
VCS=0 to 0.22V after
TBLANK
CGATE=500pF, VDD=7.5V
CGATE=500pF, VDD=7.5V
DMAXhf
VLD
TBLANK
tDELAY
tRISE
tFALL
- - 100 %
0 - 250 mV
150 215 280 ns
- - 300 ns
30 - 50 ns
30 - 50 ns
* Also limited by package power dissipation limit, whichever is lower.
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Block Diagram
CYStech Electronics Corp.
Spec. No. : C194Q8
Issued Date : 2013.05.31
Revised Date :
Page No. : 4/7
HV9910Q8 Preliminar
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