The LMZ14202EXT SIMPLE SWITCHER® power module is an easy-to-use step-down DC-DC solution capable of driving up to 2-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ14202EXT is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.
The LMZ14202EXT can accept an input voltage rail between 6 V and 42 V and can deliver an adjustable and highly accurate output voltage as low as 0.8 V. The LMZ14202EXT only requires three external resistors and four external capacitors to complete the power solution. The LMZ14202EXT is a reliable and robust design with the following protection features: thermal shutdown, input undervoltage lockout, output overvoltage protection, short-circuit protection, output current limit, and the device allows start-up into a prebiased output. A single resistor adjusts the switching frequency up to 1 MHz.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
LMZ14202EXT | TO-PMOD (7) | 10.16 mm × 9.85 mm |
Changes from G Revision (August 2015) to H Revision
Changes from F Revision (October 2013) to G Revision
Changes from E Revision (April 2013) to F Revision
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
EN | 3 | Analog | Enable — Input to the precision enable comparator. Rising threshold is 1.18 V nominal; 90 mV hysteresis nominal. Maximum recommended input level is 6.5 V. |
EP | — | Ground | Exposed Pad — Internally connected to pin 4. Used to dissipate heat from the package during operation. Must be electrically connected to pin 4 external to the package. |
FB | 6 | Analog | Feedback — Internally connected to the regulation, overvoltage, and short-circuit comparators. The regulation reference point is 0.8 V at this input pin. Connected the feedback resistor divider between the output and ground to set the output voltage. |
GND | 4 | Ground | Ground — Reference point for all stated voltages. Must be externally connected to EP. |
RON | 2 | Analog | ON-Time Resistor — An external resistor from VIN to this pin sets the ON-time of the application. Typical values range from 25 kΩ to 124 kΩ. |
SS | 5 | Analog | Soft-Start — An internal 8-µA current source charges an external capacitor to produce the soft-start function. This node is discharged at 200 µA during disable, overcurrent, thermal shutdown and internal UVLO conditions. |
VIN | 1 | Power | Supply input — Nominal operating range is 6 V to 42 V. A small amount of internal capacitance is contained within the package assembly. Additional external input capacitance is required between this pin and exposed pad. |
VOUT | 7 | Power | Output Voltage — Output from the internal inductor. Connect the output capacitor between this pin and exposed pad. |