LIA130 Optically Isolated Error Amplifier INTEGRATED CIRCUITS DIVISION PRELIMINARY Features Description Optocoupler, Precision Reference, and Error The LIA130 is an optically isolated amplifier with a Amplifier in a Single Package 431-type precision programmable shunt reference 1.240V 1% Reference ( 25C) combined in the same package. The optocoupler Linear Optical Coupler Technology with an Industry portion of the LIA130 comprises a Gallium Arsenide Standard 431-type (GaAs) light-emitting diode (LED) optically coupled to CTR 300% to 600% Linearity a silicon phototransistor. The current transfer ratio of 3750V Isolation the device is between 300% and 600%. rms The combination of features in the LIA130 is optimal for use in isolated AC-to-DC power supplies and Applications DC-to-DC converters. It replaces several discrete Power System for Workstations components, saves valuable circuit board space, and Telecom Central Office Supply reduces complexity. Telecom Bricks The device is available in DIP and surface-mount packages. Block Diagram Approvals UL Recognized Component: File E76270 CSA Certified Component: Certificate 1305490 NC LED 1 8 Ordering Information C FB 2 7 Part Description LIA130 8 Pin DIP (50/Tube) LIA130S 8-Pin Surface Mount (50/Tube) E 3 6 COMP LIA130STR 8-Pin Surface Mount (1000/Reel) NC GND 4 5 Pb e3 DS-LIA130-R00D 1 PRELIMINARYLIA130 INTEGRATED CIRCUITS DIVISION PRELIMINARY Absolute Maximum Ratings ( 25 C) Parameter Symbol Ratings Units Absolute Maximum Ratings are stress ratings. Stresses in Collector-Emitter Voltage V 20 V excess of these ratings can cause permanent damage to the CEO Emitter-Collector Voltage V 7V device. Functional operation of the device at conditions beyond ECO Input Voltage V 10 V those indicated in the operational sections of this data sheet is LED not implied. Input DC Current I 20 mA LED Collector Current I 50 mA C 1 Input Power Dissipation P 145 mW D 2 Transistor Power Dissipation P 85 mW D 3 Total Power Dissipation P 145 mW D Storage Temperature T -55 to +125 C STG Operating Temperature T -40 to +85 C OPR 1 Derate linearly from 25C at a rate of 2.42 mW/ C. 2 Derate linearly from 25C at a rate of 1.42 mW/ C. 3 Derate linearly from 25C at a rate of 2.42 mW/ C. Electrical Characteristics Parameter Conditions Symbol Min Typ Max Units Input Characteristics 25C LED forward voltage I = 5 mA, VC = V (Fig.1) V 0.9 - 1.4 V LED OMP FB F Reference voltage V = V , I = 10 mA, -40 to +85C (Fig.1) 1.224 1.24 1.259 COMP FB LED V V REF V = V , I = 10 mA, 25C (Fig.1) 1.228 1.24 1.252 COMP FB LED 1 Deviation of V over temperature T = -40 to +85C V - 77 TBD mV REF A REF (DEV) Ratio of V variation to the output of the error amplifier V / REF REF I = 10 mA, V = V to 10 V (Fig.2) - 0.002 TBD mV/V LED COMP REF V COMP Feedback input current I = 10 mA, R1 = 10 k (Fig.3) I - 0.09 TBD A LED REF 1 Deviation of I over temperature T = -40 to +85C I - 0.028 TBD A REF A REF (DEV) Minimum drive current V = V (Fig.1) I -45 80 A COMP FB LED (MIN) Off-state error amplifier current V = 6 V, V = 0 (Fig.4) I - 0.001 0.1 A LED FB (OFF) 2 Error amplifier output impedance V = V , I = 0.1 mA to 15 mA, f<1 kHZ IZ I - 0.22 - COMP FB LED OUT Output Characteristics 25C Collector dark current V = 10V (Fig. 5) I - 0.3 50 nA CE CEO Collector-emitter voltage breakdown I = 1.0mA BV 70 - - V C CEO Emitter-collector voltage breakdown I = 100 A BV 7- - V E ECO 1. The deviation parameters V and I are defined as the differences between the maximum and minimum values obtained over the rated temperature range. The average full- REF(DEV) REF(DEV) range temperature coefficient of the reference input voltage, V , is defined as: REF 6 V (ppm/C) = V /V (T 25C) X 10 / T REF REF (DEV) REF A A where T is the rated operating free-air temperature range of the device. A 2. The dynamic impedance is defined as Z = V /I . When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given by: OUT COMP LED Z = V/ I Z X 1 + R1/R2 OUT, TOT OUT R00D 2 PRELIMINARY