VN5012AKTR-E

VN5012AK-E Single channel high side driver with analog current sense for automotive applications Features Max supply voltage Operating voltage range Max On-State resistance (per ch.) Current limitation (typ) Off state supply current (typ) 1. ■ Typical value with all loads connected VCC VCC RON ILIMH IS 41V 4.5 to 36V 12 mΩ 65 A 2 µA(1) PowerSSO-24 – Electrostatic discharge protection Application ■ General features – Inrush current active management by power limitation – Very low stand-by current – 3.0V CMOS compatible input – Optimized electromagnetic emission – Very low electromagnetic susceptibility – In compliance with the 2002/95/EC european directive Diagnostic functions – Proportional load current sense – High current sense precision for wide range currents – Current sense disable – Thermal shutdown indication – Very low current sense leakage Protections – Undervoltage shut-down – Overvoltage clamp – Load current limitation – Self limiting of fast thermal transients – Protection against loss of ground and loss of VCC – Thermal shut down – Reverse battery protection (see Figure 26) All types of resistive, inductive and capacitive loads Description The VN5012AK-E is a monolithic device made using STMicroelectronics VIPower M0-5 technology. It is intended for driving resistive or inductive loads with one side connected to ground. Active VCC pin voltage clamp protects the device against low energy spikes (see ISO7637 transient compatibility table). This device integrates an analog current sense which delivers a current proportional to the load current (according to a known ratio) when CS_DIS is driven low or left open. When CS_DIS is driven high, the CURRENT SENSE pin is in a high impedance condition. Output current limitation protects the device in overload condition. In case of long overload duration, the device limits the dissipated power to safe level up to thermal shutdown intervention. Thermal shut-down with automatic restart allows the device to recover normal operation as soon as fault condition disappears. ■ ■ Table 1. Device summary Package Tube PowerSSO-24 VN5012AK-E Order codes Tape & Reel VN5012AKTR-E August 2008 Rev 6 1/31 www.st.com 31 Contents VN5012AK-E Contents 1 2 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 2.2 2.3 2.4 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.1 GND Protection network against reverse battery . . . . . . . . . . . . . . . . . . . 21 3.1.1 3.1.2 Solution 1: resistor in the ground line (RGND only) . . . . . . . . . . . . . . . . 21 Solution 2: a diode (DGND) in the ground line . . . . . . . . . . . . . . . . . . . 22 3.2 3.3 3.4 Load dump protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 MCU I/Os protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Maximum demagnetization energy (VCC = 13.5V) . . . . . . . . . . . . . . . . . 23 4 Package and PCB thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.1 PowerSSO-24 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 5 Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.1 5.2 5.3 ECOPACK® packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 PowerSSO-24 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . 27 PowerSSO-24 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2/31 VN5012AK-E List of tables List of tables Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 9. Table 8. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Pin function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Suggested connections for unused and N.C. pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Switching (VCC = 13V; Tj = 25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Protections and diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Logic input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Current sense (8V