this is information on a product in full production. june 2014 docid025575 rev 3 1/26 LED6001 pwm-dimmable single channel led driver with integrated boost controller datasheet - production data features ? switching controller section ? 5.5 v to 36 v input voltage range ? very low shutdown current: i shdn < 10 a ? internal +5 v ldo for gate driver supply ? internal +3.3 v ldo for device supply ? fixed frequency peak current mode control ? adjustable (100 khz to 1 mhz) switching frequency ? external synchronization for multi-device applications ? high performance external mosfet driver ? cycle-by-cycle external mosfet ocp ? fixed internal soft-start ? programmable output ovp ? boost, buck-boost and sepic topologies supported ? thermal shutdown with autorestart ? output short-circuit detection ? led control section ? up to 60 v output voltage ? constant current control loop ? high-side output current sensing circuitry ? 30 to 300 mv differential sensing voltage ? 4% output current reference accuracy ? output overcurrent protection ? sensing resistor failure protection ? pwm dimming with auxiliary series switch ? analog dimming applications ? indoor and architectural led lighting ? emergency led lighting ? off-grid led street lighting ? white goods ? gaming/gambling machines description the LED6001 device is a led driver that combines a boost controller and a high-side current sensing circuitry optimized for driving one string of high-brightness leds. the device is compatible with multiple topologies such as boost, sepic and fl oating load buck-boost. the brightness of the leds can be controlled through pwm dimming and analog dimming (10:1 ratio) by means of two independent pins. enhanced pwm dimming can be obtained thanks to a mosfet in series with the led string and directly driven by a dedicated pin. the high-side current sensing, in combination with a p-channel mosfet, provides an effective protection in case the positive terminal of the led string is shorted to ground. the high precision current sensing circuitry allows a led current regulation reference within ?? 4% accuracy over the whole temperature range and production spread. a fault output (open-drain) informs the host system about faulty conditions: device overtemperature, output overvoltage (disconnected led string) and led overcurrent. htssop-16 table 1. device summary order code package packaging LED6001 htssop-16 (exposed pad) tube LED6001tr tape and reel www.st.com
contents LED6001 2/26 docid025575 rev 3 contents 1 typical application circui t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 recommended operating c onditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.1 device supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.2 boost controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.2.1 turn on and power-down sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.2.2 boost controller operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.2.3 boost converter stability and slope compensation . . . . . . . . . . . . . . . . . 14 7.2.4 switching frequency osc illator and external synchron ization . . . . . . . . . 16 7.3 led current regulation and brightness control . . . . . . . . . . . . . . . . . . . . . 17 7.4 device protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.4.1 linear regulators undervoltage lockout . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.4.2 power switch overcurrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.4.3 output overvoltage and ovfb pin disconnection . . . . . . . . . . . . . . . . . 20 7.4.4 output rail disconnection detection or output short-circuit to ground . . . 21 7.4.5 thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 9 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
docid025575 rev 3 3/26 LED6001 typical application circuit 26 1 typical application circuit figure 1. basic application ci rcuit schematic (boost topology) / ( ' 9 ' 5 9 , 1 * $ 7 ( & |