TDA1060N 29/10/2012 comset semiconductors 1 | 3 control circuit for smps general description the TDA1060N is a bipolar integrated circuit intended for the control of a switched-mode power supply. quick reference data symbol ratings value unit v cc supply voltage (voltage source) < 18 v i cc supply current (current source) <30 ma -i 14 output current <40 ma i 15 output current <40 ma t amb operating ambiant temperature range -25 to 85 c functional description the TDA1060N contains the control loop fo r a fixed-frequency pulse-duration regulated smps. the device works as follows. the output voltage vo of the smps is sensed via a feedback network and compared with an internal reference voltage vref. any difference between vo and vref is amplified and fed to a pulse-width modulator (pwm), where it is compared with the instantaneous level of a ramp waveform (sawtooth) from an oscillator. the output from the pwm is a rectangular waveform synchronized with the oscillator waveform ; its duty factor depends on the difference between vo and vref. this signal drives the base of the smps power switching transistor so that its conduction period and hence the amount of energy transferred from the input to the output of the smps is controlled, resulting in a constant output voltage.
TDA1060N 29/10/2012 comset semiconductors 2 | 3 absolute maximum ratings symbol ratings value unit v cc supply voltage (voltage source) -0.5 to 18 v i cc supply current (current source) <30 ma v 14 emitter output voltage range 0 to 5 v v 15 collector output voltage range 0 to v cc v -i 14 output current <40 ma i 15 output current <40 ma t st g storage temperature range -55 to 150 c t amb operating ambiant temperature range -25 to 85 c p tot power dissipation (-25 to 60c) <0.9 w characteristics t amb range symbol ratings test condition(s) min typ max unit i cc supply current -i 7 =300a, u 3 =u 5 =u 6 =u 14 =0 u 8 =1v, r 2/12 =12.6 k ? - - 13 ma -i z output current - - 5 ma v ref internal reference voltage measured at pins 3 and 4 interconnected and grounded t amb =25c 3.42 3.72 4.03 v v 15-14 collector output voltage at v 14 =0v ;i 15 =40ma - - 400 mv
TDA1060N 29/10/2012 comset semiconductors 3 | 3 pinning revised september 2012 ????????? ? information furnished is believed to be accurate and reliable. howe ver, comset semicond uctors assumes no responsibility for the consequences of use of such information nor for any in fringement of patents or other rights of th ird parties which may results from its use. data are subject to change without notice. comset semiconductors makes no warranty, representati on or guarantee regarding the suitability of its pr oducts for any particular purpose, nor does comset semicondu ctors assume any liability arising out of the application or use of any product an d specifically disclaims any and all liability, including without limitation co nsequential or incidental damages. comset semiconductors? produ cts are not authorized for use as critical compone nts in life support devices or systems. ? ? www.comsetsemi.com info@comsetsemi.com pin symbol descritions 1 v cc positive supply connection 2 v z stabilized voltage output 3 fb feedback input 4 ga gain adjustement output 5 mod modulation input 6 dfm maximum duty factor input 7 rx external resistor connection 8 cx external capacitor connection 9 syn synchronization input 10 en enable input 11 cm overcurrent protection input 12 v ee common 13 sat core saturation and overvoltage protection input 14 q e emitter output 15 qc collrctor output 16 fw feed-forward input
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