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step down - led controller ic for external power stages ILD4001 target datasheet, rev. 1.0, july 2009 small signal discretes
edition 2009-07-06 published by infineon technologies ag, 81726 mnchen, 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 target datasheet 3 rev. 1.0, 2009-07-06 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 4 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 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 push- pull 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. 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 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.) 3 2 1 4 5 6
ILD4001 step down - led controller ic for external power stages description target datasheet 5 rev. 1.0, 2009-07-06 figure 1 block diagram pin definition table 1 pin definition and function pin number pin symbol function 1 v s supply voltage 2 gnd ic ground 3 en / pwm multifunctional pin; power on control voltage pin (pwm input) 4 v drive push- pull switch output 5 gnd ic ground 6 i sense led current sense pin ILD4001 _block diagram .vs d 6 5 4 3 2 1 vs g nd en/ pwm isense gnd vdrive ILD4001 buck led controller i / v vref vstab vstab vstab pflaum over voltage protection tsd
target datasheet 6 rev. 1.0, 2009-07-06 ILD4001 step down - led controller ic for external power stages description maximum ratings thermal resistance table 2 maximum ratings parameter symbol limit value unit supply voltage v s 45 v average output current i out 30 ma total power dissipation; t s = xxc p tot tbf mw junction temperature t j 150 c storage temperature range t stg -65... 150 c esd capability human body model 1) 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 v esd_hbm 2000 v esd capability machine model 2) 2) for esd testing, the chip was mounted in a sc74 package, where gnd is electrically connected to the chip gnd v esd_mm 400 v table 3 thermal resistance parameter symbol value unit junction - solder point r thjs tbf k/w
ILD4001 step down - led controller ic for external power stages electrical characteristics target datasheet 7 rev. 1.0, 2009-07-06 3 electrical characteristics 3.1 dc characteristics 4.5 v < v s < 40 v ; - 40 c < t j < 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 unit note / test condition min. typ. max. overall current consumption is short tbf tbf ma v s = 4.5 v; i out = 10 ma overall current consumption is short tbf tbf ma v s = 40 v; i out = 10 ma overall current consumption is short tbf a v s = 45 v; i out = 10 ma overall current consumption open load is open load tbf a v s = 4.5 v; i out = 0 ma overall current consumption open load is open load tbf a v s = 40 v; i out = 0 ma overall current consumption open load is open load tbf a v s = 45 v; i out = 0 ma overall standby current consumption is standby 200 na en = 0 v; v s = 4.5 v overall standby current consumption is standby 200 na en = 0 v; v s = 40 v input current of multifunctional control pin i en 20 40 70 a at any condition current of sense input i sense 200 na at any output current voltage of sense input v sense 100 mv sense threshold hysteresis v sensehys +/- 15 % over voltage protection v s, ov 42 v i out -> 0 a lowest sufficient voltage overhead v ce 1.2 v i out < 10 ma temperature shut down th tsd 115 125 135 c i out -> 0 a; refer to t j
target datasheet 8 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 values unit note / test condition min. typ. max. switching frequency f sw 200 khz v s = 12 v 3 leds in series rsense = 100 m ? l = 100 h v en = 3 v i led = 350 ma maximum switching frequency f swmax 500 khz recommended
ILD4001 step down - led controller ic for external power stages electrical characteristics target datasheet 9 rev. 1.0, 2009-07-06 3.3 digital signals all parameters have been measured at 25 c, unless otherwise specified 3.4 transient parameters 4.5 v < v s < 40 v ; - 40 c < t j < 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 6 digital control parameter (en) parameter symbol values unit note / test condition min. typ. max. multifunctional control pin voltage range u pon -0.3 40 v control voltage for power on u on 2 2.2 40 v full led current control voltage for power off u off -0.3 0.6 v control voltage for analog dimming u dim 1 2 v linear dimming pwm signal frequency f pwm 1000 hz t dutycycle = 1%; signal level reaches 100% in on and off mode pwm duty cycle t dutypwm 5 % f = 5 khz; signal level reaches 100% in on and off mode pwm voltage u pwm 40 v table 7 digital control parameter (en) parameter symbol values unit note / test condition min. typ. max. response time t on 10 s en: 0 -> 5 v @ t rise < 20ns i out = 10ma t off 10 s en: 5 v -> 0 @ t fall < 20 ns i out = 10ma
target datasheet 10 rev. 1.0, 2009-07-06 ILD4001 step down - led controller ic for external power stages application circuit 4 application circuit figure 2 ild4035; application circuit ILD4001 _application circuit.vsd en / pwm vs rsense 6 5 4 3 2 1 i / v vref vstab vstab vstab pflaum tsd ILD4001
ILD4001 step down - led controller ic for external power stages package information target datasheet 11 rev. 1.0, 2009-07-06 5 package information figure 3 package outline; sc74 figure 4 tape loading gpx09300 1.6 ?.1 ?.1 2.5 ?.1 0.25 1.1 max. 0.1 max. (2.25) +0.1 -0.05 0.35 (0.35) 10 ? max. 10 ? max. 2.9 ?.2 b 0.2 m b 6x 0.95 1.9 a 0.2 a m 0.15 +0.1 -0.06 3 2 1 4 5 6 2.7 4 3.15 p in 1 m arking cpwg5899 8 0.2 1.1 5

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