DC1195A Analog Devices

DEMO MANUAL DC1195A LTM8023 36V, 2A DC/DC Module Regulator DESCRIPTION Demonstration circuit 1195 features the LTM 8023, a The LTM8023 data sheet gives a complete description of the step-down regulator preconfigured to deliver 3.3V at up part, operation and application information. The LTM8023 to 2A from a 5V to 36V input supply. The LTM8023 is a data sheet must be read in conjunction with this manual step-down converter, so minimum amount of headroom to operate or modify demo circuit 1195. is required to keep the output in regulation. In addition, Design files for this circuit board are available at the input voltage required to turn on is higher than that DEMO MANUAL DC1195A QUICK START PROCEDURE Demonstration circuit 1195 is a simple way to evaluate 3. Turn on the power at the input. The output voltage the performance of the LTM8023. Refer to Figure 2 and should rise to 3.3V. Figure 3 for proper measurement equipment setup and 4. Once the proper output voltage is established, adjust follow the procedure below: the load within the operating range and observe the NOTE. When measuring the input or output voltage ripple, output voltage regulation, ripple voltage, efficiency and care must be taken to avoid a long ground lead on the other parameters. oscilloscope probe. Measure the input or output voltage ripple by touching the probe tip directly across the V or IN V and GND terminals. See Figure 3 for proper scope OUT probe technique. 1. Place JP1 on the ON position. 2. With power off, connect the input power supply to V IN and GND. 2500 2000 1500 1000 500 25C 40C 85C 0 0 10 20 30 40 INPUT VOLTAGE (V) 1195 F01 Figure 1. Load Current vs Input Voltage (3.3V ) OUT dc1195af 2 LOAD CURRENT (mA)