GM9910B UNIVERAL HIGH BRIGHTNESS LED DRIVER Description Features The GM9910B is a PWM high efficiency control LED driver IC. It allows efficient operation of High Brightness (HB) LEDs from voltage sources ranging from 10VDC up to 500VDC, this feature allows GM9910B can work from a wide range of input voltages without the need for an external low voltage supply. By using a single resistor, the switching frequency to control the external MOSFET can be fixed up to 300KHz. GM9910B is constant current LED driver, which enhance the reliability. The output current can be programmed between a few milliamps and up to more than 1.0A. > 90% efficiency Wide input range – 10V to 500V Constant current LED driver Applications from a few mA to more than 1A LED string from one to hundreds of diodes PWM low frequency dimming via enable pin Input voltage surge rating up to 500V GM9910B uses a rugged high voltage junction isolated process that can withstand an input voltage surge of up to 500V. Output current to an 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 GM9910B. The GM9910B 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. Applications AC/DC or DC/DC LED Driver Applications Back Lighting of Flat Panel Displays RGB Backlighting LED Driver General Purpose Constant Current Source Typical Application Circuit CIN CO D1 GM9910B V2.07 L1 VIN PWMD GATE GM9910B VDD LD RT CDD CS GND RCS RT www.gammamicro.com.tw 1 GM9910B UNIVERAL HIGH BRIGHTNESS LED DRIVER Marking Information and Pin Configurations (Top View) DIP 8 SO 8 8. RT 2. CS 7. LD 1. VIN 4. GATE GM9910BG AYWW 3. GND 2. CS 3. GND 6. VDD 4. GATE 5. PWMD SO16 and DIP16 16. NC 2. NC 15. NC 3. NC 14. RT 4. CS 5. GND 6. NC 7. NC 8. GATE GM9910BG AYWW 1. VIN 13. LD 12. VDD 11. NC 10. NC 9. PWMD GM9910B V2.07 G: Green Product A: Assembly / Test site code Y: Year WW: Week 2 GM9910BG AYWW 1. VIN 8. RT 7. LD 6. VDD 5. PWMD GM9910B UNIVERAL HIGH BRIGHTNESS LED DRIVER Block Diagram Regulator VIN VDD POR LD CS Blanking R Q GATE S 250 mV Oscillator GND RT PWMD Pin Descriptions Pin # 16 pin 1 Function Description VIN This pin is the input of an 10.0 - 500V linear regulator. 2 4 CS This pin is the current sense pin used to sense the FET current by an external sense resistor. When this pin exceeds the lower of either the internal 250mV or the voltage at the LD pin, the GATE output goes low. 3 5 GND This pin must be electrically connected to the ground of the power train. 4 8 GATE This pin is the output GATE driver for THE external N-channel power MOSFET. 5 9 PWMD This is the PWM dimming input of the IC. When this pin is pulled to GND, the GATE driver is turned off. When the pin is pulled high, the GATE driver operates normally. 6 12 VDD Power supply pin for all internal circuits, It must be bypassed with a low ESR capacitor to GND ( ≥ 0.1μF). 7 13 LD This pin is the linear dimming input and sets the current sense threshold as long as the voltage at the pin is less than 250mV (typ). 14 RT This pin sets the oscillator frequency. When a resistor is connected between RT and GND, the HV9910B operates in constant frequency mode. When the resistor is connected between RT and GATE, the IC operates in constant off-time mode. 2, 3, 6, 7, 10, 11, 15, 16 NC No connection 8 GM9910B V2.07 8 pin 1 3 GM9910B UNIVERAL HIGH BRIGHTNESS LED DRIVER Ordering Information Ordering Number Package Shipping GM9910BD8TG DIP-8 60 Units / Tube GM9910BS8TG SOP-8 100 Units / Tube GM9910BS8RG SOP-8 2,500 Units / Reel GM9910BS16TG SO16 50 Units / Tube GM9910BS16RG SO16 2500 Units / Reel GM9910BD16TG DIP16 25 Units / Tube Absolute Maximum Ratings PARAMETER VIN to GND RATINGS -0.5V to + 500V CS -0.3V to VDD + 0.3V LD, PWMD to GND -0.3V to VDD - 0.3V GATE to GND -0.3V to VDD + 0.3V Operating Temperature Range Junction Temperature - 40°C to + 85°C +125°C Continuous Power Dissipation (TA = 25°C) DIP 8 900mW SO 8 630mW SO 16 1300mW Storage Temperature - 65°C to + 150°C GM9910B V2.07 Stresses 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. 4 GM9910B UNIVERAL HIGH BRIGHTNESS LED DRIVER Electrical Characteristics (TA = 25°C, unless otherwise specified) Symbol Test Conditions Min Typ Max Unit Input DC supply voltage range VINDC DC Input Voltage 10 500 V Shut-Down mode supply current IINSD Pin PWMD to GND, VIN = 8V 0.5 1.0 mA Internally regulated voltage VDD VIN = 10 to 500V, IDD(ext)=0, pin GATE is open 7.0 8.0 V Maximum VDD voltage VDDmax When an external voltage applied to pin VDD 10 V VDD current available for external circuitry IDD(ext) VIN = 10–100V 1.0 mA 6.95 V VDD under voltage lockout threshold UVLO VIN rising VDD under voltage lockout hysteresis ΔUVLO VIN falling 6.45 7.5 6.7 500 mV Pin PWMD input low voltage VEN(lo) VIN = 10–500V Pin PWMD input high voltage VEN(hi) VIN = 10–500V 2.4 Pin PWMD pull-down resistance REN Pin PWMD = 5V 50 100 150 kΩ Current sense pull-in threshold VCS(hi) 243.5 250 257.5 mV TA = -40°C to +85°C 1.0 V V GATE high output voltage VGATE(hi) IOUT = 10mA VDD-0.3 VDD V GATE low output voltage VGATE(lo) IOUT = -10mA 0 0.3 V RT = 1.00MΩ 20 25 30 RT = 226kΩ 80 100 120 Oscillator frequency fOSC Maximum Oscillator PWM Duty Cycle DMAXhf Linear Dimming pin voltage range VLD TA ≤ 85°C, VIN = 12V Current sense blanking interval tBLANK VCS = 0.55VLD, VLD = VDD Delay from CS trip to GATE lo tDELAY VIN = 12V, VLD = 0.15, VCS = 0 to 0.22V after tBLANK GATE output rise time tRISE CGATE = 500pF GATE output fall time tFALL CGATE = 500pF Thermal Shutdown Temperature TTST 150 °C Thermal Shutdown Hysteresis THYS 40 °C fPWMhf = 25kHz, at GATE, CS to GND. kHz 100% 0 150 250 215 mV 280 ns 300 ns 30 50 ns 30 50 ns GM9910B V2.07 Parameter 5 GM9910B UNIVERAL HIGH BRIGHTNESS LED DRIVER Package Outline Dimensions – SO 8 0.189 - 0.197 (4.800 - 5.004) 0.228 - 0.244 (5.791 - 6.198) 0.016 - 0.050 (0.406 - 0.270) D 0.014 - 0.020 (0.356 - 0.508) 0.050 (1.270) TYP 0.150 - 0.157 (3.810 - 3.988) 0.053 - 0.059 (1.346 - 1.753) SEATING PLAN 0.004 - 0.010 (0.012 - 0.254) 8.0 MAX 0.008 - 0.010 (0.203 - 0.254) Package Outline Dimensions – DIP 8 0.250 +/- 0.005 (6.350 +/- 0.127) 0.370 - 0.400 (9.474 - 10.150) 0.300 - 0.320 (7.620 - 8.128) GM9910B V2.07 0.06 (1.524) 6 0.145 - 0.200 (3.683 - 5.080) 0.125 - 0.140 (3.175 - 3.556) 0.045 +/- 0.015 (1.143 +/- 0.183) 0.108 +/- 0.003 (0.457 +/- 0.076) 0.100 +/- 0.010 (2.540 +/- 0.254) J 0.009 - 0.010 (0.299 - 0.381) 95 +/- 5 GM9910B UNIVERAL HIGH BRIGHTNESS LED DRIVER Package Outline Dimensions – SO 16 0.386 - 0.402 (9.800 - 10.200) 0.150 - 0.157 (3.800 - 4.000) 0.016 - 0.050 (0.400 - 1.270) 0.050 (BSC) 1.270 (BSC) 0.228 - 0.244 (5.800 - 6.200) 0.053 - 0.061 (1.350 - 1.550) SEATING PLAN O 0.013 - 0.020 (0.330 - 0.510) 0.004 - 0.010 0.007 - 0.010 (0.100 - 0.250) (0.170 - 0.250) O 0-8 inches (mm) Package Outline Dimensions – DIP 16 9 16 0.244 - 0.260 (0.204 - 0.360) 1 8 0.740 - 0.758 (18.800 - 19.200) 0.060 (BSC) 1.524 (BSC) 0.244 - 0.260 (6.200 - 6.600) 0.146 - 0.170 (3.710 - 4.310) 0.008 - 0.014 (0.204 - 0.360) 0.118 - 0.142 (3.000 - 3.600) 0.015 - 0.022 (0.380 - 0.570) 0.331 - 0.354 (8.400 - 9.000) inches (mm) GM9910B V2.07 0.100 (BSC) 2.540 (BSC) 7 GM9910B UNIVERAL HIGH BRIGHTNESS LED DRIVER Ordering Number GM 9910B APM Gamma Micro Circuit Type S8 R G Package Type Shipping Type D16: DIP 16 S16: SO 16 D8: DIP 8 S8:SO 8 R: Taping & Reel T: Tube Blank: Pb-free G:Green Note: Pb-free products: ♦ RoHS compliant and compatible with the current require-ments of IPC/JEDEC J-STD-020. ♦ Suitable for use in SnPb or Pb-free soldering processes with 100% matte tin (Sn) plating. GM9910B V2.07 Green products: 8 ♦ Lead-free (RoHS compliant) ♦ Halogen free(Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight)