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| L9651 SMART QUAD SWITCH s s s s s s s Modified VDMOS Power Stage (UDSBR > 80V) RDSON < 500 mOhm (Tj = 25C) 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 PowerSO-20 ORDERING NUMBER: L9651 DIAGNOSTIC FUNCTIONS s Open Load Detection (Output off, 100sfiltering time) s Short to Ground Detection (Output off, 100s filtering time) s Short to Battery Detection (Output on) s s s s Serial Interface Clock Frequency up to 500kHz Over temperature detection (Output on) 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 DESCRIPTION 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). s BLOCK DIAGRAM VBAT Turn On q Data In Clock Sync. Underv. Shutd. Serial Data Out q q q Reset References Serial Diagnostic Fault Detection q Inputs 1..4 Logic Gate Control Four Fold q Short Circuit Protection Ground April 2001 Output 1..4 1/9 L9651 PIN CONNECTION (Top view) GND N.C. IN1 IN2 OUT1 VBAT OUT2 DO CL GND 1 2 3 4 5 6 7 8 9 10 SO20POW 20 19 18 17 16 15 14 13 12 11 GND N.C. IN4 IN3 OUT4 R OUT3 DI SY GND PIN FUNCTION N 1, 10, 11, 20 2, 19 3 4 5 6 7 8 9 12 13 14 15 16 17 18 Pin GND N.C. IN1 IN2 OUT1 VBAT OUT2 DO CL SY DI OUT3 R OUT4 IN3 IN4 Ground Not Connected Input 1 Input 2 Output 1 Supply Voltage Output 2 Serial Data Out Clock Synchronization Serial Data In Output 3 Reset Output 4 Input 3 Input 4 Function 2/9 L9651 ABSOLUTE MAXIMUM RATINGS Symbol TSTG TJ VBAT VBATtr VOUT VOUTtr ECL -IOUT Storage Temperature Operating Junction Temperature DC Supply Voltage Transient Supply Voltage; t < 400ms Output Voltage Transient Output Voltage; during clamping Output Clamping energy; repetition rate < 100 Hz Output reverse current Parameter Value -55 to 150 -40 to 150 -2 to 30 40 65 78 10 2 -0.3 to 6.5 Unit oC oC V V V V mJ A V VR,VINi,VDI, Control Input voltage VCLVSY VDO Control Output voltage -0.3 to 6.5 V THERMAL DATA Symbol Rth j-case Parameter Thermal Resistance Junction to Case Value 2.5 Unit C/W ELECTRICAL CHARACTERISTCS (6.5V < VBAT < 25V, -40 < TJ < 150C) Symbol Supply Voltage VBATU IBAT Turn on threshold voltage Supply current V BAT = 14V VOUTi > 0V 2.0 4 10 4.7 15 V mA Parameter Test Condition Min. Typ. Max. Unit Output stage RDSON On resistance VBAT = 14V TJ = 25C; Iout = 1A VBAT = 14V TJ = 150C; I out = 1A VCL IOUTi Clamping voltage, inductive load Over current shutdown (Shutdown latch resets with pos. slope at INi) Iout = 0.5 A TJ = -40C TJ = 25C TJ = 150C Output leakage current see: Open load diagnostic current 63 3.0 2.5 2.2 70 500 m 850 76 4.3 3.7 3.5 m V A A A 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 VINiHL VSYHL VCLHL VRHL VDIHL VINih VSYh VCLh VRh VDIh - IINi - ISY - IC L - IR - IDI Timing tdon tdoff son soff toc tv tv fCL tvDV tvset tvhold Turn on delay Turn off delay Switch on slew rate Switch off slew rate Over current detection time Open load filtering time Short to GND filtering time Serial clock frequency DO: Datavalidtime DI: Datasettlingtime DI: Dataholdtime 60 60 0 0.03 0.5 0 7.5 7.5 10 15 0.5 100 100 200 200 500 1 s s V/s V/s s s s kHz s s s Input High level 3.5 6.5 V Input Low level -0.3 1.5 V Hysteresis 0.2 1 V Input current IN1 ... IN4, SY, CL, R (Internal pull up current source) VINi = 0V VSY = 0V VCL = 0V VR = 0V VDI = 0V 10 10 40 120 80 A Input current DI (Internal pull up current source) 120 220 250 A Diagnostic VBATDU Under voltage threshold 4.7 7.5 V Serial Data output (External pull up required) VDO | IDO | Data output low voltage Data output leakage current IDO < 1.6mA 7.5V < VBAT < 22V 0 0.45 10 V A 4/9 L9651 ELECTRICAL CHARACTERISTCS (continued) Symbol Parameter Test Condition Min. Typ. Max. Unit Output voltage monitoring Output off VOL VSG Open load threshold voltage (fault detected if VOUTi < VOL) Short to GND threshold voltage (fault detected if VOUTi < VSG) 7.5V < VBAT < 22V 7.5V < VBAT < 22V 2/3VBAT 1/3VBAT Open load diagnostic current Output off Open load output voltage I OUT = 0 A VINi = 5V 7.5V < VBAT < 22V VOUT = 1V VINi = 5V VOUT = VBAT VINi = 5V 7.5V < VBAT < 22V 50 200 1/2VBAT - IOUTi IOUTi Output current Output current 100 320 150 500 A A Overload Diagnostic Over temperature diagnostic IOUTi Over current TJ TJ = -40C TJ = 25C TJ = 150C 3.0 2.5 2.2 175 4.3 3.7 3.5 C A A A 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 L H L tvset 1/fCL Di1 Di2 Di3 tvhold SY CL H L tvDV H L tv Shift Register Data Frozen Reset of Shift Register DO Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Di1 Di2 Di3 5/9 L9651 Figure 2. Serial Interface Error Coding BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 BIT n OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 DI H L H L H H L L o.k. open load/over temperature short to battery short to ground Figure 3. Output voltage TIMING for inductive load VINi VINiH VINiL t VOUTi VCL 0.8VCL sOFF sON VBAT 0.8VBAT 0.2VBAT tdon tdoff t 6/9 L9651 Figure 4. Application Circuit VBAT q q q q q q q 5 Volt Regulator q q RESET q q VCC R q q q R IN1 IN2 q R OUT1 OUT2 OUT3 OUT4 DI DO SY CL Controller q IN3 IN4 DO SY CL Further driver ICs with 4-WireDiagnostic DI q q q q 7/9 L9651 mm TYP. inch TYP. 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. 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 MAX. 0.142 0.012 0.130 0.004 0.021 0.013 0.630 0.386 0.570 OUTLINE AND MECHANICAL DATA 1.27 11.43 10.9 5.8 0 15.5 0.8 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.) 10 0.050 0.450 0.437 0.114 0.244 0.004 0.626 0.043 0.043 JEDEC MO-166 0.394 (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" PowerSO20 N N a2 b e A R c DETAIL B a1 E DETAIL A DETAIL A e3 H lead D a3 DETAIL B 20 11 Gage Plane 0.35 slug -C- S E2 T E1 BOTTOM VIEW L SEATING PLANE G C (COPLANARITY) E3 1 10 h x 45 PSO20MEC D1 8/9 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 (R) 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 |
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