VN751S High side driver Features Type RDS(on) Iout VCC VN751S 60 mΩ 2.5 A 36 V SO-8 ■ CMOS compatible input ■ Thermal shutdown ■ Shorted load protection ■ Undervoltage and overvoltage shutdown ■ Protection against loss of ground ■ Very low stand-by current ■ Compliance to 61000-4-4 IEC test up to 4 kV Figure 1. Description The VN751S is a monolithic device designed in STMicroelectronics VIPower M0-3 technology, intended for driving any kind of load with one side connected to ground. Active VCC pin voltage clamp protects the device against low energy spikes. Active current limitation combined with thermal shutdown and automatic restart protect the device against overload. Device automatically turns off in case of ground pin disconnection. This device is especially suitable for industrial applications in conformity with IEC 61131-2 programmable controllers international standard. Block diagram VCC OVERVOLTAGE DETECTION VCC CLAMP UNDERVOLTAGE DETECTION GND Power CLAMP DRIVER OUTPUT LOGIC INPUT CURRENT LIMITER STATUS OVERTEMPERATURE DETECTION July 2008 Rev 6 1/17 www.st.com 17 VN751S Contents Contents 1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Waveforms and truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 Reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2/17 VN751S 1 Maximum ratings Maximum ratings Table 1. Absolute maximum rating Symbol Value Unit DC supply voltage (overvoltage protected) 45 V - VCC Reverse DC supply voltage -0.3 V - IGND DC reverse ground pin current -200 mA Internally limited A -5 A VCC IOUT - IOUT Parameter DC output current Reverse DC output current IIN DC input current +/- 10 mA ISTAT DC status current +/- 10 mA VESD Electrostatic discharge ( R = 1.5 kΩ; C = 100 pF ) 5000 V Ptot Power dissipation TC = 25 °C Internally limited W TJ Junction operating temperature Internally limited °C Tc Case operating temperature - 40 to 150 °C Tstg Storage temperature - 55 to 150 °C EAS Single-pulse avalanche energy 0.8 J Value Unit 93(1) °C/W Table 2. Symbol Thermal data Parameter RthJA Thermal resistance junction-ambient RthJC Thermal resistance junction-case Max 82(2) Max 15 °C/W 1. When mounted on a standard single-sided FR-4 board with 0.5 cm2 of Cu (at least 35µm) thick connected to all VCC pins. Horizontal mounting and no artificial air flow. 2. When mounted on a standard single-sided FR-4 board with 2 cm2 of Cu (at least 35µm) thick connected to all VCC pins. Horizontal mounting and no artificial air flow. 3/17 Pin connections 2 Pin connections Figure 2. Connection diagram (top view) Figure 3. Current and voltage conventions 4/17 VN751S VN751S 3 Electrical characteristics Electrical characteristics 8 V < VCC < 36 V; -40 °C < TJ < 125 °C, unless otherwise specified Table 3. Symbol Power Parameter Test conditions Min VCC Operating supply voltage VUSD Undervoltage shut-down 3 VOV Overvoltage shut-down 36 RON On state resistance 5.5 IOUT = 2 A; TJ = 25 °C Supply current 4 Table 4. Symbol Off state output current IOUT = 2 A 36 V 5.5 V 180 10 1.5 On state; VCC = 24 V VIN = VOUT = 0 V Unit V On state; VCC = 24 V;TCASE =100 °C IL(off) Max 60 Off state; VCC = 24 V; TCASE =25 °C IS Typ 0 mΩ mΩ 1.8 µA mA mA 10 µA 20 Switching ( VCC = 24 V ) Parameter Test conditions Min Typ Max Unit td(on) Turn-on delay time RL = 12 Ω from VIN rising edge to VOUT = 2.4 V 12 µs td(off) Turn-off delay time RL = 12 Ω from VIN falling edge to VOUT = 21.6 V 35 µs dVOUT/dt(on) Turn -on voltage slope RL = 12Ω from VOUT = 2.4 V to VOUT = 19.2 V 0.80 V/µs dVOUT/dt(off) Turn -off voltage slope RL = 12 Ω from VOUT = 21.6 V to VOUT = 2.4 V 0.30 V/µs 5/17 VN751S Electrical characteristics Table 5. Symbol Parameter VIL Input low level IIL Low level input current VIH Input high level IIH High level input current Vhyst Input hysteresis voltage IIN VICL Table 6. Symbol Input current Input clamp voltage Test conditions VIN = 1.25 V Min Typ Max Unit 1.25 V 1 µA 3.25 V VIN = 3.25 V 10 0.5 V VIN = VCC = 5 V IIN = 1 mA µA 10 µA 6 6.8 -0.7 8 V V Min Typ Max Unit IIN = -1 mA Status pin Parameter Test conditions VSTAT Status low output voltage ISTAT = 1.6 mA 0.5 V ILSTAT Status leakage current Normal operation; VSTAT = 5 V 10 µA CSTAT Status pin input capacitance Normal operation; VSTAT = 5 V 100 pF VSCL Status clamp voltage ISTAT = 1 mA; ISTAT =-1 mA 6 6.8 -0.7 8 V V Min Typ Max Unit Shut-down temperature 150 175 200 °C TR Reset temperature 135 Thyst Thermal hysteresis 7 Table 7. Symbol TTSD Ilim Vdemag 6/17 Input pin Protections Parameter Current limitation Test conditions VCC = 24 V, RLOAD = 10 mΩ, t = 0.4 ms Turn-off output clamp RL =12 Ω; L = 6 mH voltage °C 20 2.7 VCC47 VCC52 °C 6.0 A VCC57 V VN751S 4 Waveforms and truth table Waveforms and truth table Figure 4. Switching time waveforms VOUT 90% 80% dVOUT/dt(off) dVOUT/dt(on) 10% t VIN td(on) td(off) t Table 8. Truth table Conditions Input Output Status Normal operation L H L H H H Current limitation L H H L X X Overtemperature L H L L H L Undervoltage L H L L X X Overvoltage L H L L H H H (TJ < TTSD) H (TJ > TTSD) L 7/17 VN751S Waveforms and truth table Figure 5. Waveforms NORMAL OPERATION INPUT LOAD VOLTAGE STATUS UNDERVOLTAGE VUSDhyst VCC VUSD INPUT LOAD VOLTAGE undefined STATUS OVERVOLTAGE VCC<VOV VCC>VOV VCC INPUT LOAD VOLTAGE STATUS TJ INPUT LOAD CURRENT STATUS 8/17 TTSD TR OVERTEMPERATURE VN751S 5 Figure 6. Test circuit Test circuit Peak short circuit current test circuit R Figure 7. Avalanche energy test circuit R 9/17 VN751S Application schematic 6 Figure 8. Application schematic Application schematic VN751S 10/17 VN751S 7 Reverse polarity protection Reverse polarity protection A schematic solution to protect the IC against a reverse polarity condition is proposed. This schematic is effective with any type of load connected to the outputs of the IC. The RGND resistor value can be selected according to the following conditions to be met: 1. RGND ≤ 600 mV / (IS in ON state max). 2. RGND ≥ (-VCC) / (-IGND) where -IGND is the DC reverse ground pin current and can be found in the absolute maximum rating section of the device datasheet. The power dissipation associated to RGNG during reverse polarity condition is: PD = (-VCC)2/RGND This resistor can be shared by several different ICs. In such case IS value on formula (1) is the sum of the maximum ON-state currents of the different devices. Please note that if the microprocessor ground and the device ground are separated then the voltage drop across the RGND (given by IS in ON state max * RGND) produce a difference between the generated input level and the IC input signal level. This voltage drop will vary depending on how many devices are ON in the case of several high side switches sharing the same RGND. Figure 9. Reverse polarity protection + Vcc Statusi Outputi Inputi RGND GND Load (Optional) 11/17 Package mechanical data 8 VN751S 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 12/17 VN751S Package mechanical data Table 9. SO-8 mechanical data mm inch Dim. Min Typ A a1 Max Min Typ 1.75 0.1 0.068 0.25 a2 Max 0.003 0.009 1.65 0.064 a3 0.65 0.85 0.025 0.033 b 0.35 0.48 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.25 0.5 0.010 0.019 c1 45 ( typ. ) D 4.8 5.0 0.188 0.196 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 F 3.8 4.0 0.14 0.157 L 0.4 1.27 0.015 0.050 M S 0.6 0.023 8º (max.) Figure 10. Package dimensions 13/17 Package mechanical data Figure 11. SO-8 tape and reel information 14/17 VN751S VN751S 9 Order code Order code Table 10. Order codes Order codes Package Packaging VN751S SO-8 Tube VN751STR SO-8 tape and reel 15/17 VN751S Revision history 10 Revision history Table 11. 16/17 Document revision history Date Revision Changes 18-Sep-2006 1 Initial release 12-Mar-2007 2 Document reformatted, typo in Section Table 3.: Power on page 5, updated Ptot value Table 2. 15-May-2007 3 Typo in Table 1 on page 3 VESD 18-Sep-2007 4 Added ISTAT valuein Table 1 on page 3 11-Oct-2007 5 Updated Table 2 on page 3 08-Jul-2008 6 Added Section 7 on page 11 VN751S Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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