Document
CYStech Electronics Corp.
Universal High Brightness LED Driver
Spec. No. : C194Q8 Issued Date : 2013.05.31 Revised Date : Page No. : 1/7
HV9910Q8
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 SOP-8 (Pb-free lead plating and halogen-free package) Shipping 2500 pcs / tape & reel
HV9910Q8 Preliminar
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CYStek Product Specification
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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
8 7 6 5
1
2
3
4
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.
HV9910Q8 Preliminar
y
CYStek Product Specification
CYStech Electronics Corp.
Electrical Characteristics (TA=25°C, unless otherwise noted)
Parameter Input DC supply voltage range Shut down mode supply current Internally regulated voltage Load regulation of VDD Maximum pin VDD voltage VDD current available for external circuitry VDD under voltage lockout threshold VDD under voltage lockout hysteresis Pin PWM_D input low voltage Pin PWM_D input high voltage Pin PWM_D pull down resistance Current sense pull-in threshold voltage GATE high output voltage GATE low output voltage Test Condition Symbol VINDC * DC input voltage Pin PWM_D to GND, IINSD VIN=8V VIN=10 to 600V, IDD(ext)=0, VDD pin Gate open IDD(ext)=0 to 1mA, 500pF at GATE, ROSC=226k △VDD, load Ω,PWM_D=VDD When an external voltage is VDD, max applied to pin VDD VIN=10 to 100V VIN rising VIN falling VIN=10 to 600V VIN=10 to 600V VEN=5V TA=-40°C ~ +85°C IDD(ext) UVLO △UVLO VEN(lo) VEN(hi) REN VCS(hi) VGATE(hi) VGATE(lo) fOSC DMAXhf VLD TBLANK tDELAY tRISE tFALL Min. 10 0.5 7 0 6.45 2 50 225
Spec. No. : C194Q8 Issued Date : 2013.05.31 Revised Date : Page No. : 3/7
Typ. 7.5 6.7 500 100 250 25 100 215 -
Max. 600 1 8 100 10 0.7 6.95 0.8 150 275 VDD 0.3 30 120 100 250 280 300 50 50
Unit V mA V mV V mA V mV V V kΩ mV V V kHz % mV ns ns ns ns
IOUT=10mA IOUT=-10mA ROSC=1MΩ Oscillator frequency ROSC=226kΩ FPWMhf=25kHz, at GATE, Maximum oscillator PWM duty cycle CS to GND Pin LD(Linear Dimming) voltage TA<85°C, VIN=12V range Current sense blanking interval VCS=0.55VLD, VLD=VDD VIN=12V, VLD=0.15V, VCS=0 to 0.22V after Delay from CS to GATE lo TBLANK GATE output rise time CGATE=500pF, VDD=7.5V GATE output fall time CGATE=500pF, VDD=7.5V
VDD-0.3 0 20 80 0 150 30 30
* Also limited by package power dissipation limit, whichever is lower.
HV9910Q8 Preliminar
y
CYStek Product Specification
CYStech Electronics Corp.
Block Diagram
Spec. No. : C194Q8 Issued Date : 2013.05.31 Revised Date : Page No. : 4/7
HV9910Q8 Preliminar
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CYStek Product .