L9308

L 9308 DUAL LOW SIDE DRIVER . . . . . . DARLINGTON OUTPUT STAGE INPUT COMPARATOR WITH WIDE RANGE COMMON MODE OPERATION AND GROUND COMPATIBLE INPUTS INPUT COMPARATOR HYSTERESIS SHORT CIRCUIT PROTECTION OF OUTPUT WITH SOA PROTECTION INTERNAL THERMAL PROTECTION WITH HYSTERESIS SINGLESUPPLYVOLTAGEFROM 3.5VUP TO 28V MINIDIP ORDERING NUMBER : L9308 DESCRIPTION The L9308 is a monolithic interface circuit with differentialinput comparator and open collector output able to sink current specifically to drive lamps, relays, d.c. motors, electro valves etc. Particular care has been taken to protect the device against destructive failures - short circuit of outputs to VS, SOA protection, supply overvoltage. BLOCK DIAGRAM A built in thermal shut-down switches off the device when the IC’s internal dissipation becomes too high and the chip temperature exceeds the security threshold. The input comparatorhysteresis increases the interface’s noise immunity allowing the correct use in critical environments as automotive applications. October 1990 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. 1/7 L9308 PIN CONNECTION (Top view) 1) 2) 3) 4) 5) 6) 7) 8) -IN2 +IN2 OUT2 GND OUT1 VST +IN1 -IN1 Inverting input2 Non-inverting input2 Output2 Ground Output1 Supply Non-inverting input1 Inverting input1 ABSOLUTE MAXIMUM RATINGS Symbol IZS VS IO Tj, Tstg Ptot Current Into Supply Clamp Zener Diode Supply Voltage Output Current Junction and Storage Temperature Power Dissipation at Tamb = 85°C Parameter Tamb = 25°C, DC Pulsed (*) Value 30 80 28 Internally Limited – 55 to +150 650 °C mW Unit mA mA V(**) (*) TON ≤ 2.5ms ; repetition time > 30ms. (**) The maximum allowed supply voltage without limiting resistor is limited by the built-in protection zener diode : see VZS spec. values. If VS is higher than VZS a resistor R S is necessary to limit the zener current IZS. THERMAL DATA Symbol Parameter Max Value 100 Unit °C/W R th j-amb Thermal Resistance Junction-ambient 2/7 L9308 ELECTRICAL CHARACTERISTICS (Vs = 14.4V ; – 40°C ≤ Tamb, ≤ 85°C; RS = 100Ω unless otherwise noted) Symbol VIH IB IOS CMR ISC Parameter Hysteresis of the Input Comparater Input Bias Current Input Offset Current Input Common Mode Range Output Short Circuit Current for Each Channel (see fig. 4) Test Conditions VIN = 200mVpp ; f = 1kHz V I = VI = 0 VI = VI = 0 Vs = 6 – 18V Tamb = 25°C VIN – VIN > 70mV VS = 16V Tamb = 25°C to 85°C Tamb = – 40°C to 25°C VOUT 1, 2 = 6V Tamb = – 40°C to 25°C – + VI – VI > 70mV IOUT 1, 2 = 300mA Tamb = 25°C to 85°C VI – VI > 70mV VS = 18V VS = 5V 3.5 VI + – – + – + – Min. 20 Typ. Max. 80 Unit mV µA nA V 0.2 ± 50 0 1.0 ± 400 VST –1.6 0.6 0.7 1.2 1.5 1.0 1.4 A A A V V VCSAT On Status Saturation Voltage IOL Output Leakage Current 10 300 20 18 8 27 µA µA V mA mA V mA VST I ”st.by” Supply voltage (pin 6) Supply Current Supply Current Voltage Clamp Supply Protection Minimum Output Current wiyth the Outputs connected Together Rise Time (see fig. 2) Fall Time Delay Time on Delay Time off VI > 70mV – 5 18 20 400 I”ON” VZS IOmin tr tf tdon tdoff VI– VI+ > 70mV IZS = 10mA VCSAT = 1.5V IOUT = 50mA Tamb = 25°C IOUT = 50mA Tamb = 25°C 2 2 10 10 µs µs 3/7 L9308 Figure 1 : Switching Time Test Circuit. Figure 2 : Switching Time Waveforms for Resistive Loads. Figure 3 : Typical Application and Test Circuit. Notes : a) RS requiredonly to limit ΙZS whenever VS exceeds VZS voltage value. b) C1, C2 cut high frequency gain during current limiting. 4/7 L9308 Figure 4 : Typical SOA Characteristic. 5/7 L9308 MINIDIP PACKAGE MECHANICAL DATA DIM. MIN. A a1 B b b1 D E e e3 e4 F I L Z 3.18 7.95 2.54 7.62 7.62 6.6 5.08 3.81 1.52 0.125 0.51 1.15 0.356 0.204 1.65 0.55 0.304 10.92 9.75 0.313 0.100 0.300 0.300 0.260 0.200 0.150 0.060 mm TYP. 3.32 0.020 0.045 0.014 0.008 0.065 0.022 0.012 0.430 0.384 MAX. MIN. inch TYP. 0.131 MAX. 6/7 L9308 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. © 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 7/7