STM802 SOLENOID CONTROLLER IC ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ WIDE SUPPLY VOLTAGE RANGE: 8 TO 35V DC BUILD-IN GATE DRIVE VOLTAGE CLAMP TYP. 11V LOGIC CONTROLLED ENABLING CIRCUIT DIGITAL IN-RUSH TIMER BUILT-IN POWER-ON RESET INTERNALLY TRIMMED TIMING OSCILLATOR NO EXTERNALLY TIMING CAPACITORS NEEDED FIXED IN-RUSH/HOLD CURRENT RATIO LOW DROP CURRENT SENSING RESISTOR INTEGRATED FILTER IN THE FEEDBACK LOOP (TIME COSTANT OF 2µs TYP.) SO-8 PACKAGE DESCRIPTION This circuit is basically switch mode current regulator with 2 modes (In-rush and Holding). In-rush current occurs in the first 64 ms of each SO-8 on/off cycle with the rise time dependent on the coil’s resistance and inductance. The Hold-current is a partition of the In-rush current fixed by the ratio between V1 and V2. A control pin is provided for enabling and disabling the gate control output for the external power MOS. The MOS transistor must be chosen according to the supply voltage range and the current flowing through the solenoid. ORDERING CODES Type Temperature Range Package Comments STM802BD STM802BDR -40 to 85 °C -40 to 85 °C SO-8 (Tube) SO-8 (Tape & Reel) 100 parts per tube / 20 parts per box 2500 parts per reel October 2003 1/8 STM802 BLOCK DIAGRAM AND SCHEMATIC CIRCUIT PIN CONFIGURATION PIN DESCRIPTION PlN N° SYMBOL 1 TST (Note 1) 2 VCC 3 4 5 6 7 8 BYP EN PWMG LING FB GATE NAME AND FUNCTION Test Input Supply Voltage Bypass capacitor Enable Input Switch Ground Linear Ground FeedBack Gate Control Output Note 1: The TST pin is for testing purpose only. Must be left FLOATING for normal operation. 2/8 STM802 TRUTH TABLES FOR ENABLE PIN EN DEVICE LOW HIGH FLOAT ENABLED DISABLED DISABLED Note 1: The TST pin is for testing purpose only. Must be left FLOATING for normal operation. ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Value Unit Supply Voltage -0.5 to 40 V -0.5 to 7 V ± 20 mA VI DC Input Voltage of EN, FB IIK DC Input Diode Current IOK DC Output Diode Current −20/+5 mA PD Maximum Power Dissipation 500 mW TL Lead Temperature (10sec) 300 °C -65 to 150 °C TSTG Storage Temperature Range Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING CONDITIONS (Unless otherwise noted. Typical values are at TA = 25°C) Symbol Parameter Test Conditions Typ. Max. Unit 8 35 V VCC Operative Supply Voltage Range VIL Low Level Input Thresholds of Enable 0 0.8 V VIH High Level Input Thresholds of Enable 2 5 V -60 0.1 -30 1 µA µA 0.4 0.9 mA 0.7 1.2 mA VHYST DC only Min. Hysteresis of Enable Input 0.3 IIN Input Leakage Current of Enable IQ Quiescent Supply Current ICC Supply Current EN = GND, VCC = 9V, VFB = 0V CLOAD = 1000pF Gate drive voltage clamp VCC > 20V VCLAMP EN = GND EN = 5.5V, VCC = 0 to 35V EN = 5.5V, VCC = 9V, VFB = 0V -100 V 9 11 13 V V1 Voltage reference for Inrush current 314 345 380 mV V2 Voltage reference for Hold current 70 77 86 mV IINR/IHOLD Inrush current to hold current ratio 4.5 TINR Time duration of Inrush interval IGH Gate control output source current VG = 0V, VCC = 13V IGL Gate control output sink current VG = 8V, VCC = 13V Internal Pre-regulator output voltage IBYP = 1mA VBYP TC Time constant of feedback filter TOP Operative Temperature Range 56 2.5 -40 64 72 ms -1.6 -1 mA 4.5 mA 4 V 2 µs 85 °C 3/8 STM802 TYPICAL CHARACTERISTICS Figure 1 : Power on Cycle (EN = Low) Figure 2 : Controlled by Enable (VCC = ON) 4/8 STM802 Figure 3 : Controlled by Enable (VCC = ON) 5/8 STM802 SO-8 MECHANICAL DATA DIM. mm. MIN. TYP inch MAX. MIN. TYP. MAX. A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.04 0.010 A2 1.10 1.65 0.043 0.065 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D 4.80 5.00 0.189 0.197 E 3.80 4.00 0.150 0.157 e 1.27 0.050 H 5.80 6.20 0.228 0.244 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 k ddd 8˚ (max.) 0.1 0.04 0016023/C 6/8 STM802 Tape & Reel SO-8 MECHANICAL DATA mm. inch DIM. MIN. A TYP MAX. MIN. 330 MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 TYP. 0.504 22.4 0.519 0.882 Ao 8.1 8.5 0.319 0.335 Bo 5.5 5.9 0.216 0.232 Ko 2.1 2.3 0.082 0.090 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 7/8 STM802 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 All other names are the property of their respective owners © 2003 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 8/8