L9351 STMICROELECTRONICS | Alldatasheet

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Technical content

This is advanced information on a new produc t now in development or undergoin g evaluation. Details are subject to change without notice. L9351 October 1992 HIGH SIDE DRIVER ADVANCE DATA .LOW SATURATION VOLTAGE .TTL COMPATIBLE INPUT .WIDE SUPPLY VOLTAGE .VERY LOW QUIESCENT CURRENT (30mA max) .NO EXTERNAL COMPONENTS .INTERNAL RECIRCULATION PATH FOR FAST DECAY OF INDUCTIVE LOAD CUR- RENT .SHORT CIRCUIT PROTECTION .FAILSAFE OPERATION : OUTPUT IS OFF IF THE LOGIC INPUT IS LEFT OPEN

DESCRIPTION

The L9351 is a monolithic integrated circuit desi- gned to drive groundedresistive, inductive or mixed loads from the power supply positive side. Very low standby current (30mA max.) and internally imple- mented protectionsagainst load dump and reverse voltages make the device very useful in automotive applications. No external componentsare required because the output recirculation clamping zener is included in the chip. This zener can withstand a re- circulation peak current of 550mA on a 80mH/25Ω load. The device is self-protected against overtempera- ture, overvoltage and overcurrent conditions. The L9351 operates over the full battery voltage range, from 4.5V (cold cranking) up to 24V (jump starting). The L9351 withstands revers battery conditions(- 13V) and supply voltage transients up to 80V limit- ing the maximum output transistor V EC to70V by an internalzener.ON and OFFdelaytimesof 25µsm a x in anyoutputstatus,includingrecirculating situation, allow PWM use of L9351. Pentawatt ORDERING NUMBER : L9351 BLOCK DIAGRAM

Symbol Parameter Value Unit VS D.C. Supply Voltage D.C. Reverse Supply Voltage Load Dump: 5ms ≤ trise≤ 10ms τf Fall Time Constant = 100ms, Rsource≥ 0.5Ω Low Energy Spikes: Rsource≥ 10Ω ,t rise=1 µs, tf = 2ms, fr Repetition Frequency = 0.2Hz –13 ±85 V V V V V i Input Voltage –0.3 to 7 V IO Output Current Internally Limited Ptot Total Power Dissipation at Tcase =9 0°C 17.1 W Tj,Tstg Junction and Storage Temperature –55 to 150 °C PIN CONNECTION (top view) Note :Pin 3 must be left open or connected to ground. THERMAL DATA Symbol Parameter Value Unit R th j-amb R th j-case Thermal Resistance Junction-ambient Max. Thermal Resistance Junction-case Max. 3.5 °C/W °C/W L9351

ELECTRICAL CHARACTERISTICS

(VS = 14.4V, – 40°C ≤ Tj≤ + 125°C unless otherwise specified). Symbol Parameter Test Conditions Min. Typ. Max. Unit VS Operating Supply Voltage 4.5 24 V VIH Input Voltage High 4.5 < V S < 24 2.0 V VIL Input Voltage Low 1 0.8 V II Input Current 0.8 < V I < 5.5V 40 µA IPL Output Leakage Current V O =0 V V S = 24V VI < 0.8V 140 µA Vsat Output Saturation Voltage I O = 125mAV S = 4.5V 0.5 V IO = 225mAV S = 14.4V 0.5 V IO = 550mAV S = 14.4V 0.7 V ISC Output Short Circuit Current 0.6 1.5 A IQ Quiescent Current V I >2 V 3 0 m A VI < 0.8V Stand-by Condition 100 150 µA VZO Negative Output Zener Voltage RL =2 5Ω L = 80mH on VITransition from ”1” to ”0” –3 6 –3 0 –2 4 V Ton Turn ON Delay Resistive Load R L =2 5Ω , Tj =2 5°C (fig.2) 20 µs Toff Turn OFF Delay 25 µs Figure 1 :Typical Automotive Application Circuit. L9351

Dia. A C D E F G L MM 1 PENTAWATT PACKAGE MECHANICAL DATA DIM. mm inch A 4.8 0.189 C 1.37 0.054 D 2.4 2.8 0.094 0.110 D1 1.2 1.35 0.047 0.053 E 0.35 0.55 0.014 0.022 F 0.8 1.05 0.031 0.041 F1 1 1.4 0.039 0.055 G 3.4 0.126 0.134 0.142 G1 6.8 0.260 0.268 0.276 H2 10.4 0.409 H3 10.05 10.4 0.396 0.409 L 17.85 0.703 L1 15.75 0.620 L2 21.4 0.843 L3 22.5 0.886 L5 2.6 3 0.102 0.118 L6 15.1 15.8 0.594 0.622 L7 6 6.6 0.236 0.260 M 4.5 0.177 M1 4 0.157 Dia 3.65 3.85 0.144 0.152 L9351

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. Specifica- tions mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information pre- viously 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 HEPTAWATT  is a Trademark of SGS-THOMSON Microelectronics 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. L9351