T a r ge t D a t a s h e et , R e v . 1 . 0 , J u l y 2 00 9 S t ep d ow n - L E D c on t r o l le r I C f or e x t e r n a l po w e r stages ILD4001 S m a l l S i g n a l D i s c r et e s Edition 2009-07-06 Published by Infineon Technologies AG, 81726 München, Germany © Infineon Technologies AG 2009. All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as a guarantee of characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. ILD4001 Step down - LED controller IC for external power stages ILD4001, Step down - LED controller IC for external power stages Revision History: 2009-07-06, Rev. 1.0 Page Subjects (major changes since last revision) I Target Datasheet 3 Rev. 1.0, 2009-07-06 ILD4001 Step down - LED controller IC for external power stages Bipolar Buck- converter LED Controller IC 1 Bipolar Buck- converter LED Controller IC Features • Wide Input Voltage Range: 4.5V ... 40 V • Over voltage protection • Temperature shut down mechanism • Integrated push- pull stage for fast on/off- switching • Soft- Start capability • Low shut down current < 200nA in operating voltage range • Multifunctional Enable Pin • Analog and PWM dimming possible • PWM control for LED brightness possible • Typical 3% output current accuracy • Minimum external component required • Small Package: SC-74 4 3 5 2 6 1 Applications • LED Controller for industrial applications • Universal Constant Current Source • Generell Illumination e.g. Halogen Replacement • Residential Architectural and Industrial Commercial Lighting for in- and outdoor • Signal and Marker Lights for Orientation or Navigation (e.g. steps, exit ways, etc.) 2 Description The ILD4001 is a hysteretic buck LED controller IC for industrial applications realized in a bipolar IC technology. The LED Controller is capable to drive external bipolar or MOSFET power transistors by using the internal pushpull output stage. The IC incorporates a wide input voltage range and the output current level can be adjusted with an external sense resistor. According to the multifunctional control pin the IC can be switched on and off by an external signal, which is also suitable to regulate brightness of the LEDs by PWM dimming. Depending on the value of the switching inductor the switching frequency and the voltage ripple could be set. The precise internal bandgap stabilizes the circuit and provides stable current conditions over temperature range. Furthermore, over voltage protection and temperature shut down mechanism enforce the IC to protect attached LEDs. Additional features are included to protect the LED’s from overload, short circuit events as well as from over voltage. The LED’s can be also protected against thermal overload by thermally coupling the LED’s to the ILD4001. Target Datasheet 4 Rev. 1.0, 2009-07-06 ILD4001 Step down - LED controller IC for external power stages Description ILD4001 Buck LED Controller Vs 1 6 Isense Vstab Vstab I/V Over Voltage Protection TSD GND 2 Vref 5 GND 4 Vdrive Vstab EN/ 3 PWM Pflaum ILD4001 _Block diagram .vsd Figure 1 Block diagram Pin Definition Table 1 Pin definition and function Pin number Pin Symbol Function 1 Vs Supply Voltage 2 GND IC ground 3 EN / PWM Multifunctional Pin; Power On control voltage pin (PWM input) 4 Vdrive Push- Pull Switch Output 5 GND IC ground 6 Isense LED current sense pin Target Datasheet 5 Rev. 1.0, 2009-07-06 ILD4001 Step down - LED controller IC for external power stages Description Maximum Ratings Table 2 Maximum ratings Parameter Symbol Limit Value Unit Supply voltage Vs 45 V Average Output current Iout 30 mA Total Power Dissipation; Ts= xx°C Ptot TJ TSTG VESD_HBM VESD_MM tbf mW 150 °C -65... 150 °C 2000 V 400 V Junction temperature Storage temperature range ESD capability Human Body Model1) 2) ESD capability Machine Model 1) For ESD testing, the chip was mounted in a SC74 package on an application board, where GND is electrically connected to the chip GND 2) For ESD testing, the chip was mounted in a SC74 package, where GND is electrically connected to the chip GND Thermal resistance Table 3 Thermal resistance Parameter Symbol Value Unit Junction - solder point RthJS tbf K/W Target Datasheet 6 Rev. 1.0, 2009-07-06 ILD4001 Step down - LED controller IC for external power stages Electrical Characteristics 3 Electrical Characteristics 3.1 DC Characteristics 4.5 V < VS < 40 V; - 40 °C < TJ < 150 °C, all voltages with respect to ground; positive; current flowing into pin; unless otherwise specified All parameters have been measured at 25 °C, unless otherwise specified Table 4 DC Characteristics Parameter Symbol Values Min. Typ. Unit Note / Test Condition Max. Overall current consumption Isshort tbf tbf mA Overall current consumption Isshort Isshort Isopen load Isopen load Isopen load Isstandby Isstandby IEN tbf tbf mA Overall current consumption Overall current consumption open load Overall current consumption open load Overall current consumption open load Overall standby current consumption Overall standby current consumption Input Current of multifunctional control pin Current of Sense input Voltage of Sense input Sense threshold hysteresis Over voltage Protection Lowest sufficient voltage overhead Temperature shut down Target Datasheet Isense Vsense Vsensehys Vs, OV VCE ThTSD tbf µA tbf µA tbf µA Vs = 4.5 V; Iout = 10 mA Vs = 40 V; Iout = 10 mA Vs = 45 V; Iout = 10 mA Vs = 4.5 V; Iout = 0 mA Vs = 40 V; Iout = 0 mA Vs = 45 V; Iout = 0 mA 200 nA EN = 0 V; Vs= 4.5 V 200 nA EN = 0 V; Vs = 40 V 70 µA at any condition 200 nA at any Output current tbf 20 40 µA 100 mV +/- 15 % 42 V 1.2 115 125 7 V 135 °C Iout -> 0 A Iout < 10 mA Iout -> 0 A; refer to TJ Rev. 1.0, 2009-07-06 ILD4001 Step down - LED controller IC for external power stages Electrical Characteristics 3.2 AC Characteristics All parameters have been measured at 25 °C, unless otherwise specified Table 5 AC Characteristics Parameter Symbol Switching frequency Fsw Maximum switching frequency Fswmax Values Min. Target Datasheet Unit Note / Test Condition 200 kHz Vs = 12 V 3 LEDs in series Rsense = 100 mΩ L = 100 µH VEN = 3 V ILED = 350 mA 500 kHz recommended Typ. 8 Max. Rev. 1.0, 2009-07-06 ILD4001 Step down - LED controller IC for external power stages Electrical Characteristics 3.3 Digital Signals All parameters have been measured at 25 °C, unless otherwise specified Table 6 Digital Control Parameter (EN) Parameter Symbol Values Min. Multifunctional control pin voltage UPon range Control voltage for power on Control voltage for power off Control voltage for analog dimming UOn UOff Udim Unit Typ. Max. -0.3 2 2.2 V 40 V -0.3 0.6 V 1 2 V linear dimming 1000 Hz tdutycycle = 1%; fPWM PWM signal frequency 40 Note / Test Condition full LED current signal level reaches 100% in on and off mode PWM Duty cycle tdutyPWM PWM voltage UPWM 3.4 5 % 40 f = 5 KHz; signal level reaches 100% in on and off mode V Transient Parameters 4.5 V < VS < 40 V; - 40 °C < TJ < 150 °C, all voltages with respect to ground; positive; current flowing into pin; unless otherwise specified All parameters have been measured at 25 °C, unless otherwise specified Table 7 Digital Control Parameter (EN) Parameter Symbol Values Min. Response Time Target Datasheet Typ. Unit Note / Test Condition Max. TON 10 µs EN: 0 -> 5 V @ trise < 20ns IOut = 10mA TOFF 10 µs EN: 5 V -> 0 @ tfall < 20 ns IOut = 10mA 9 Rev. 1.0, 2009-07-06 ILD4001 Step down - LED controller IC for external power stages Application Circuit 4 Application Circuit Rsense Vs 1 Vstab Vstab 6 I/V TSD 2 5 Vref Vstab EN / PWM 3 4 ILD4001 Pflaum ILD4001 _Application circuit.vsd Figure 2 ILD4035; Application Circuit Target Datasheet 10 Rev. 1.0, 2009-07-06 ILD4001 Step down - LED controller IC for external power stages Package Information 5 Package Information 2.9 ±0.2 (2.25) 1.1 MAX. B 0.1 MAX. 1 2 3 0.35 +0.1 -0.05 0.2 B 6x M 0.15 +0.1 -0.06 0.95 0.2 1.9 M 1.6 ±0.1 4 10˚ MAX. 5 0.25 ±0.1 10˚ MAX. 6 2.5 ±0.1 (0.35) A A GPX09300 Figure 3 Package Outline; SC74 0.2 2.7 8 4 Pin 1 marking Figure 4 3.15 1.15 CPWG5899 Tape loading Target Datasheet 11 Rev. 1.0, 2009-07-06