L9651 SMART QUAD SWITCH ■ Modified VDMOS Power Stage (UDSBR > 80V) ■ RDSON < 500 mOhm (Tj = 25°C) ■ CMOS Compatible Inputs Enable Input (Reset) Outputs Capable of up to 2.2 Amperes Outputs Internally Clamped at 70V for Fast Inductive Load Switch Off Wide operating supply voltage from 4.7V up to 30V ■ ■ ■ ■ DIAGNOSTIC FUNCTIONS ■ Open Load Detection (Output off, 100µsfiltering time) ■ Short to Ground Detection (Output off, 100µs filtering time) ■ Short to Battery Detection (Output on) PowerSO-20 ORDERING NUMBER: L9651 ■ Serial Interface Clock Frequency up to 500kHz ■ Over temperature detection (Output on) DESCRIPTION ■ Storage of last fault in 8 Bit - Serial Register ■ Fault Signal Indication at Serial Data Out without need to read out the Serial Interface ■ Daisy Chainable Serial Diagnostic The L9651 consists of four identical low side power switches. A serial diagnostic interface indicates failure mode of each switch (short circuit to V BAT or ground and open load or over temperature). BLOCK DIAGRAM VBAT Turn On Clock Data In Sync. Underv. Shutd. References Serial Data Out Reset ● Serial Diagnostic Fault Detection Logic Four Fold ● Gate Control ● ● ● Output 1..4 Inputs 1..4 ● Short Circuit Protection Ground April 2001 1/9 L9651 PIN CONNECTION (Top view) GND 1 20 GND N.C. 2 19 N.C. IN1 3 18 IN4 IN2 4 17 IN3 OUT1 5 16 OUT4 VBAT 6 15 R OUT2 7 14 OUT3 DO 8 13 DI CL 9 12 SY 10 11 GND GND SO20POW PIN FUNCTION N° Pin 1, 10, 11, 20 GND Ground 2, 19 N.C. Not Connected 3 IN1 Input 1 4 IN2 Input 2 5 OUT1 Output 1 6 VBAT Supply Voltage 7 OUT2 Output 2 8 DO Serial Data Out 9 CL Clock 12 SY Synchronization 13 DI Serial Data In 14 OUT3 15 R 16 OUT4 17 IN3 Input 3 18 IN4 Input 4 2/9 Function Output 3 Reset Output 4 L9651 ABSOLUTE MAXIMUM RATINGS Symbol TSTG TJ Parameter Value Unit Storage Temperature -55 to 150 oC Operating Junction Temperature -40 to 150 oC -2 to 30 V VBAT DC Supply Voltage VBATtr Transient Supply Voltage; t < 400ms 40 V VOUT Output Voltage 65 V VOUTtr Transient Output Voltage; during clamping 78 V Output Clamping energy; repetition rate < 100 Hz 10 mJ Output reverse current 2 A -0.3 to 6.5 V -0.3 to 6.5 V Value Unit 2.5 °C/W ECL -IOUT VR,VINi,VDI, Control Input voltage VCLVSY VDO Control Output voltage THERMAL DATA Symbol Parameter Rth j-case Thermal Resistance Junction to Case ELECTRICAL CHARACTERISTCS (6.5V < VBAT < 25V, -40 < TJ < 150°C) Symbol Parameter Test Condition Min. Typ. Max. Unit 4.7 V 15 mA VBAT = 14V TJ = 25°C; Iout = 1A 500 mΩ VBAT = 14V TJ = 150°C; I out = 1A 850 mΩ 76 V Supply Voltage VBATU IBAT Turn on threshold voltage Supply current 2.0 V BAT = 14V VOUTi > 0V 4 10 Output stage RDSON On resistance VCL Clamping voltage, inductive load Iout = 0.5 A 63 IOUTi Over current shutdown (Shutdown latch resets with pos. slope at INi) TJ = -40°C 3.0 4.3 A TJ = 25°C 2.5 3.7 A TJ = 150°C 2.2 3.5 A 70 Output leakage current see: Open load diagnostic current 3/9 L9651 ELECTRICAL CHARACTERISTCS (continued) Symbol Parameter Test Condition Min. Typ. Max. Unit Logic Inputs IN1...IN4, SY, CL, DI, R VINiLH VSYLH VCLLH VRLH VDILH Input High level 3.5 6.5 V VINiHL VSYHL VCLHL VRHL VDIHL Input Low level -0.3 1.5 V VINih VSYh VCLh VRh VDIh Hysteresis 0.2 1 V - IINi - ISY - IC L - IR Input current IN1 ... IN4, SY, CL, R (Internal pull up current source) 120 µA - IDI Input current DI (Internal pull up current source) VINi = 0V 10 VSY = 0V VCL = 0V VR = 0V 10 VDI = 0V 120 40 80 220 250 µA Timing tdon Turn on delay 7.5 µs tdoff Turn off delay 7.5 µs son Switch on slew rate 10 V/µs soff Switch off slew rate 15 V/µs toc Over current detection time 0.5 µs tv Open load filtering time 60 100 200 µs tv Short to GND filtering time 60 100 200 µs fCL Serial clock frequency 0 500 kHz tvDV DO: Datavalidtime 0.03 1 µs tvset DI: Datasettlingtime 0.5 µs tvhold DI: Dataholdtime 0 µs Diagnostic VBATDU Under voltage threshold 4.7 7.5 V 0 0.45 V 10 µA Serial Data output (External pull up required) VDO | IDO | 4/9 Data output low voltage Data output leakage current IDO < 1.6mA 7.5V < VBAT < 22V L9651 ELECTRICAL CHARACTERISTCS (continued) Symbol Parameter Test Condition Min. Typ. Max. Unit Output voltage monitoring Output off VOL Open load threshold voltage (fault detected if VOUTi < VOL) 7.5V < VBAT < 22V 2/3VBAT VSG Short to GND threshold voltage (fault detected if VOUTi < VSG) 7.5V < VBAT < 22V 1/3VBAT Open load output voltage I OUT = 0 A VINi = 5V 7.5V < VBAT < 22V 1/2VBAT - IOUTi Output current VOUT = 1V VINi = 5V 50 100 150 µA IOUTi Output current VOUT = VBAT VINi = 5V 7.5V < VBAT < 22V 200 320 500 µA Open load diagnostic current Output off Overload Diagnostic IOUTi Over temperature diagnostic TJ Over current TJ = -40°C 3.0 4.3 A TJ = 25°C 2.5 3.7 A TJ = 150°C 2.2 3.5 A 175 °C Figure 1. Typical Timing Diagram for Serial Diagnostic Fault: Short to Battery or over temp. o. k. < tv Fault: Open Load or Short to GND o. k. H DI SY CL Di1 Di2 Di3 L tvhold H L tvset 1/fCL H L tvDV DO H L Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Di1 Di2 Di3 tv Shift Register Data Frozen Reset of Shift Register 5/9 L9651 Figure 2. Serial Interface Error Coding BIT 1 BIT 2 OUTPUT 1 BIT 4 BIT 3 OUTPUT 2 BIT 5 BIT 6 OUTPUT 3 BIT 7 BIT 8 OUTPUT 4 H H o.k. L H open load/over temperature H L short to battery L L short to ground BIT n DI Figure 3. Output voltage TIMING for inductive load VINi VINiH VINiL t VOUTi VCL 0.8VCL sOFF VBAT 0.8VBAT sON 0.2VBAT tdon 6/9 tdoff t L9651 Figure 4. Application Circuit VBAT ● 5 Volt Regulator ● ● ● RESET ● VCC ● ● ● ● ● ● ● ● ● R R IN2 Controller ● R OUT1 IN1 ● OUT2 IN3 OUT3 IN4 OUT4 DO SY DO SY DI DI CL CL ● ● Further driver ICs with 4-WireDiagnostic ● ● 7/9 L9651 DIM. A a1 a2 a3 b c D (1) D1 E e e3 E1 (1) E2 E3 G H h L N S T MIN. mm TYP. 0.1 0 0.4 0.23 15.8 9.4 13.9 MAX. 3.6 0.3 3.3 0.1 0.53 0.32 16 9.8 14.5 MIN. 0.004 0.000 0.016 0.009 0.622 0.370 0.547 1.27 11.43 10.9 inch TYP. 0.050 0.450 11.1 0.429 2.9 6.2 0.228 0.1 0.000 15.9 0.610 1.1 1.1 0.031 10˚ (max.) 8˚ (max.) 5.8 0 15.5 0.8 OUTLINE AND MECHANICAL DATA MAX. 0.142 0.012 0.130 0.004 0.021 0.013 0.630 0.386 0.570 10 0.437 0.114 0.244 0.004 0.626 0.043 0.043 JEDEC MO-166 0.394 PowerSO20 (1) "D and F" do not include mold flash or protrusions. - Mold flash or protrusions shall not exceed 0.15 mm (0.006"). - Critical dimensions: "E", "G" and "a3" N R N a2 b A e DETAIL A c a1 DETAIL B E e3 H DETAIL A lead D slug a3 DETAIL B 20 11 0.35 Gage Plane -C- S SEATING PLANE L G E2 E1 BOTTOM VIEW T E3 1 h x 45 8/9 10 PSO20MEC C (COPLANARITY) D1 L9651 Information furnished is believed to be accurate and reliable. However, STMicroelectronics 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 STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics 2001 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com 9/9