TPL9202

` Eight Low-Side Drivers With Internal Clamp for Inductive Loads and Current Limiting for Self Protection
Seven Outputs are Rated at 150 mA and Controlled Through Serial Interface
One Output Rated at 150 mA and Controlled Through Serial Interface and Dedicated Enable Pin
` 5-V ±5% Regulated Power Supply With 200-mA Load Capability at VIN Max of 18 V
` Internal Voltage Supervisory for Regulated Output
` Serial Communications for Control of Eight Low-Side Drivers
` Enable/Disable Input for OUT1
` 5-V or 3.3-V I/O Tolerant for Interface to Microcontroller
` Programmable Power On-Reset Delay Before RST Asserted High, Once 5 V Is Within Specification (6 ms Typ)
` Programmable Deglitch Timer Before RST Is Asserted Low (40 ms Typ)
` Programmable Brown-Out Feature
` Thermal Shutoff for Self Protection

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to GND.
(3) Absolute negative voltage on these pins must not go below 0.5 V.
(4) Not more than one output should be shorted at a time, and duration of the short circuit should not exceed 1 ms.
(5) The thermal data is based on using 1-oz copper trace with JEDEC 51-5 test board for PWP.
(6) The data is based on ambient temperature of 25°C max.
(7) The Human Body Model is a 100-pF capacitor discharged through a 1.5-kW resistor into each pin.

The power supply provides regulated 5-V output to power the TPL9202 system microcontroller and drive eight low-side switches. The brown-out detection output (BO_OUTZ) warns the system if there is a temporary drop in the supply voltage, so the system can prevent potentially hazardous situations.

A serial communications interface controls the eight low-side outputs; each output has an internal snubber circuit to absorb the inductive load at turn OFF. Alternatively, the TPL9202 system can use a fly-back diode to V_IN to help recirculate the energy in an inductive load at turn OFF.