STESB01 ESBT Base Driver Feature summary ■ Controls ESBT base current in every line/load condition ■ Supply voltage range: 8V to 20 V ■ Storage time controlled by closed loop architecture (from 150ns to 1.5µs) ■ Under voltage lockout with hysteresis SOT23-6L SO-8 Description The STESB01 is a dedicated base current biasing transistor for the Emitter-Switched Bipolar Transistor (ESBT) family of power switches. The device is able to control the ESBT storage time (from 150ns to 1.5ìs) using closed loop architecture. This guarantees proper operation of the ESBT in every line and load condition, avoiding oversaturation of the device and, at the same time, ensuring the correct base current when a higher load is required. The storage time can be adjusted with an external resistor, which allows maximum flexibility in different applications. The optimization of the base current value also reduces the base current losses to minimum level. Order code Part number Package Packaging STESB01STR SOT23-6L 3000 Parts per Reel STESB01DR SO-8 2500 Parts per Reel October 2006 Rev. 3 1/14 www.st.com 14 STESB01 Contents Contents 1 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2/14 STESB01 1 Figure 1. Schematic diagram Schematic diagram Schematic diagram 3/14 STESB01 Pin configuration 2 Pin configuration Figure 2. Pin Connections (Top View) SOT23-6L Table 1. Pin description Pin N° for SO-8 Pin N° for SOT23 Symbol 8 1 DRIVE 6, 7 2 GND 5 3 STGADJ 4 4 VCOLL 2 5 PWM 1 6 VCC 3 4/14 SO-8 N.C. Name and function This is the base current driver for the external PNP transistor (see Application Schematic) which determines the ESBT base current value. Ground. Reference for all the signal of the IC. Adjustable Storage (adjusted by connecting a resistor between this pin and GND pin). A minimum value of 150ns can be achieved with 10kΩ resistor. See note 4. Collector Voltage. This pin must be connected to the ESBT collector through a resistor divider. The rising edge of this signal provides end-of-storage time information. Pulse Width Modulation. This pin must be connected to the PWM controller output. The falling edge of this signal provides beginning-of-storage time information. Supply Voltage. It range is from 8V to 20V. A ceramic Bypass capacitor must be connected between VCC and GND. Not Connected. STESB01 3 Maximum ratings Maximum ratings Table 2. Absolute maximum ratings Symbol VCC Drive STGADJ Parameter DC Input voltage Drive output voltage Value Unit -0.3 to 22 -0.3 to VCC V -0.3 to 5 -0.3 to 15 -0.6 to 5 ±2 TBD V V V kV mW V ESD PTOT Storage time adjust voltage PWM Input voltage Collector input voltage Human body model Continuous power dissipation (at TA = 105°C) TSTG Storage temperature range -40 to 150 °C TOP Operating junction temperature range -40 to 125 °C PWM VCOLL Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 3. Symbol Thermal data Parameter SOT23-6L SO-8 Unit RthJC Thermal resistance junction-case 81 20 °C/W RthJA Thermal resistance junction-ambient 255 55 °C/W This value is referred to 1 layer PCB board with minimum copper connections for the leads. 5/14 STESB01 Electrical characteristics 4 Electrical characteristics Table 4. Electrical characteristics (VCC = 20V, CI = 3.3µF, TJ= -40°C to 125°C unless otherwise specified.) Symbol Parameter Test Conditions Min. Typ. Max. 7.5 8 Unit Supply Input and Under Voltage Lock Out VCC ICC Turn On Threshold VCC rising Turn Off Threshold after Turn On VCC falling PWM=VCOLL=0V Supply Current See Note 1 6.5 7 V 2 2 mA 50 mV 0.25 A Driver Output (TJ = 27°C) VOL Low Level Voltage IDRIVE(OL) Drive Current in open loop IDRIVE =10mA VDRIVE = 1.25V, RSTGadj=150 kΩ See Note 2, Note 4 Storage Control VPWML PWM Low Level Threshold See Note 3 VPWMH PWM High Level Threshold See Note 3 3.5 -0.1 IPWM PWM input bias current PWM = 0V to 15V VCOLL(L) Collector Low Level Threshold See Note 3 VCOLL(H) Collector High Level Threshold VCOLL input bias current See Note 3 VCOLL = 0V to 5V ICOLL 1.5 0.1 µA 0.8 V 0.1 µA 2.5 -0.1 V V V 1 To the PWM pin must be applied a 5V to 0V falling edge while the voltage level on the VCOLL pin must be 0V. After 300 ns, to the VCOLL pin must be applied a 0V to 5V rising edge. The maximum frequency of signals applied to PWM and VCOLL pins must be 300 kHz. 2 To the PWM pin must be applied a 5V to 0V falling edge while the voltage level on the VCOLL pin must be 0V. After 200 ns, to the VCOLL pin must be applied a 0V to 5V raising edge. The maximum frequency of signals applied to PWM and VCOLL pins must be 300 kHz. 3 Guaranteed by Design. 4 In parallel to the resistor a low-leakage/low-ESR capacitor could be necessary for bypassing purpose. 6/14 STESB01 5 Diagram Diagram Figure 3. Block diagram Figure 4. Typical operating characteristics 7/14 Package mechanical data 6 STESB01 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. 8/14 STESB01 Package mechanical data SOT23-6L MECHANICAL DATA mm. mils DIM. MIN. TYP MAX. MIN. TYP. MAX. A 0.90 1.45 35.4 57.1 A1 0.00 0.15 0.0 5.9 A2 0.90 1.30 35.4 51.2 b 0.35 0.50 13.7 19.7 C 0.09 0.20 3.5 7.8 D 2.80 3.00 110.2 118.1 E 2.60 3.00 102.3 118.1 E1 1.50 1.75 59.0 68.8 e 0.95 37.4 e1 1.9 74.8 L 0.35 0.55 13.7 21.6 9/14 STESB01 Package mechanical data 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 10/14 STESB01 Package mechanical data Tape & Reel SOT23-xL MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 180 13.0 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 3.13 3.23 3.33 0.123 0.127 0.131 Bo 3.07 3.17 3.27 0.120 0.124 0.128 Ko 1.27 1.37 1.47 0.050 0.054 0.0.58 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 3.9 4.0 4.1 0.153 0.157 0.161 11/14 STESB01 Package mechanical data Tape & Reel SO-8 MECHANICAL DATA mm. inch DIM. MIN. A MAX. MIN. 330 13.2 TYP. MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 12/14 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 STESB01 7 Revision history Revision history Table 5. Revision history Date Revision Changes 16-Nov-2005 1 Initial release. 26-Jul-2006 2 Mistake on table 3 function of pin 3. 03-Oct-2006 3 Add new package SO-8. 13/14 STESB01 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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