User Guide 044 ISL80510EVAL1Z Evaluation Board User Guide Description Key Features The ISL80510EVAL1Z provides a simple platform to evaluate performances of the ISL80510 and ISL80505. It comes with jumpers to provide an easy way to set popular output voltages. • Small, compact design The ISL80510 is a high performance, low voltage, high current, low dropout linear regulator specified at 1A. Rated for input voltages from 2.2V to 6V, the LDO can provide output voltages from 0.8V to 5.5V. • VIN range of 2.2V to 6V (ISL80510), 1.8V to 6V (ISL80505) • VOUT adjustable from 0.8V to 5.5V • Convenient power connection References ISL80510 datasheet Specifications This board has been configured and optimized for the following operating conditions: ISL80505 datasheet Ordering Information • VIN = 2.2 to 6V (ISL80510), 1.8V to 6V (ISL80505) PART NUMBER • VOUT = 1V, 1.2V, 1.8V, 2.5V, 3.3V, or 5V (Jumper selectable) DESCRIPTION ISL80510EVAL1Z • IMAX = 1A (ISL80510), 500mA (ISL80505) ISL80510 evaluation board ISL80510/ISL80505 VIN 8 1 7 2 VIN CIN 10µF SS CSS 10nF VOUT VOUT VIN VOUT EPAD R1 CPB 10nF COUT 10µF FB 6 3 5 4 ENABLE 2.61kΩ GND R2 GND FIGURE 1. ISL80510EVAL1Z BLOCK DIAGRAM NOTE: The ISL80505 is another high performance, low dropout linear regulator specified at 500mA in the same family as ISL80510. The ISL80505 is rated for input voltage from 1.8V to 6V and can provide output voltages from 0.8V to 5.5V. The ISL80505 is pin-to-pin compatible with ISL80510 and can simply replace ISL80510 on ISL80510EVAL1Z for evaluation. (For ISL80505 samples, please contact Intersil.) September 3, 2015 UG044.0 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2015. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. User Guide 044 Functional Description PCB Layout Guidelines The ISL80510EVAL1Z evaluation board provides a simple platform to demonstrate the features of the ISL80510 and ISL80505. The ISL80510EVAL1Z has a functionally optimized ISL80510/ISL80505 circuit layout that allows efficient operation up to the maximum output current. A good PCB layout is important to achieve expected performance. Consideration should be taken when placing the components and routing the trace to minimize the ground impedance, and keep the parasitic inductance low. The input and output capacitors should have a good ground connection and be placed as close to the IC as possible. The ‘FB’ trace must be away from noisy planes and traces. The ISL80510EVAL1Z evaluation board is shown in Figures 2 and 3. The “ISL80510EVAL1Z Circuit Schematic” on page 4 shows the schematic, bill of materials and PCB layers for reference. Figure 7 through 16 show performance data taken using this hardware. Operating Range The large 2x3 via pattern under the ISL80510/ISL80505 is connected to a large ground copper plane on the bottom layer for effective thermal dissipation. Quick Start Guide The board VIN range is 2.2V to 6V (ISL80510) or 1.8V to 6V (ISL80505). The board VOUT setting is set to 1.8V out of the box. The output voltage can be set be an external resistor divider network. The values of resistors R1 and R2 can be calculated by using Equation 1. V OUT R 1 = R 2 ---------------- – 1 0.5 1. Select the desired output voltage by shorting one of the jumpers from J1 through J6. 2. Connect the input supply to VIN and GND. 3. Connect the load to VOUT and GND. 4. Enable the IC using jumper JP1 and observe the output. (EQ. 1) The output voltage can be easily changed to different voltage setting by jumpers from J1 through J6. Table 1 lists the output voltage options included in the ISL80510EVAL along with the corresponding jumper. TABLE 1. VOUT (V) R1 (kΩ) R2 (kΩ) JUMPER 1.0 2.61 2.61 J1 1.2 2.61 1.87 J2 1.8 2.61 1.00 J3 2.5 2.61 0.649 J4 3.3 2.61 0.464 J5 5.0 2.61 0.287 J6 Submit Document Feedback 2 UG044.0 September 3, 2015 User Guide 044 ISL80510EVAL1Z Evaluation Board FIGURE 2. TOP SIDE FIGURE 3. BOTTOM SIDE Submit Document Feedback 3 UG044.0 September 3, 2015 73 9,Q 73 9RXW 8 66 )% (1 *1' -3 & Q) & Q) & X) 9287 9,1 9287 9RXW 5 . ,6/ 4 & X) 9,1 (3 9LQ &21 &21 Submit Document Feedback ISL80510EVAL1Z Circuit Schematic 5 5 5 &21 FIGURE 4. ISL80510EVAL1Z SCHEMATIC - - - 5 . 5 . 5 . - - - *1' User Guide 044 73 &21 UG044.0 September 3, 2015 User Guide 044 Bill of Materials REFERENCE ITEM QTY DESIGNATOR VALUE TOL (%) RATING TYPE PCB FOOTPRINT MANUFACTURER MANUFACTURER PART NUMBER 1 2 C1, C3 10nF 5 25V NPO SM0603 Various 2 2 C4, C2 10µF 10 25V X5R SM0805 Various 3 6 J1, J2, J3, J4, Header 1x2 J5, J6 Header MOLEX 22-03-2021 4 1 JP1 Header 1x3 Header MOLEX 22-03-2031 5 2 R1, R2 2.61k 1 100mW THK FILM SM0603 Various 6 1 R3 1.87k 1 100mW THK FILM SM0603 Various 7 1 R4 1k 1 100mW THK FILM SM0603 Various 8 1 R5 649 1 100mW THK FILM SM0603 Various 9 1 R6 464 1 100mW THK FILM SM0603 Various 10 1 R7 287 1 100mW THK FILM SM0603 Various 11 0 TP1, TP2, TP3 Do Not Populated 12 1 U1 ISL80510 13 4 CON1, CON2, CON3, CON4 Submit Document Feedback Test point 8 Ld 3x3 DFN Terminal Turret 5 INTERSIL ISL80510IRAJZ Keystone 1514-2 UG044.0 September 3, 2015 User Guide 044 Board Layout - 2 Layers FIGURE 5. TOP LAYER FIGURE 6. PCB – BOTTOM LAYER (VIEWED FROM TOP) Submit Document Feedback 6 UG044.0 September 3, 2015 User Guide 044 Typical Performance Curves Unless otherwise noted: VIN = 2.2V, VOUT = 1.8V, TJ = +25°C, IL = 0A. 1.854 1.854 1.818 1.800 1.782 +125°C -40°C IOUT = 0A 1.836 +85°C +25°C OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 1.836 1.764 1.818 1.800 IOUT = 1A 1.782 1.764 1.746 0 0.2 0.4 0.6 0.8 1.0 1.746 -40 -25 -10 5 OUTPUT CURRENT (A) FIGURE 7. LOAD REGULATION 35 50 65 80 95 110 125 FIGURE 8. OUTPUT VOLTAGE vs TEMPERATURE 2.0 1.854 IOUT = 10mA 1.8 +25°C 1.6 +85°C OUTPUT VOLTAGE (V) 1.836 OUTPUT VOLTAGE (V) 20 TEMPERATURE (°C) 1.818 1.800 +125°C -40°C 1.782 +125°C 1.4 1.2 1.0 +85°C 0.8 0.6 +25°C 0.4 1.764 0.2 -40°C 0 1.746 2.2 2.7 3.3 3.8 4.4 4.9 INPUT VOLTAGE (V) 5.4 6.0 FIGURE 9. LINE REGULATION 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 INPUT VOLTAGE (V) 4.5 5.0 5.5 6.0 FIGURE 10. OUTPUT VOLTAGE vs INPUT VOLTAGE 2.2 RLOAD = 3.6Ω VIN = 2.2V OUTPUT VOLTAGE (V) 2.0 EN (2V/DIV) 1.8 1.6 SS (500mV/DIV) VIN = 6V 1.4 VOUT (500mV/DIV) 1.2 1.0 -40 -25 -10 5 20 35 50 65 80 95 TEMPERATURE (°C) FIGURE 11. CURRENT LIMIT vs TEMPERATURE Submit Document Feedback 7 110 125 ILOAD (500mA/DIV) 2ms/DIV FIGURE 12. ENABLE START-UP (CSS = 10nF) UG044.0 September 3, 2015 User Guide 044 Typical Performance Curves Unless otherwise noted: VIN = 2.2V, VOUT = 1.8V, TJ = +25°C, IL = 0A. COUT = 10µF, CPB = 10nF COUT = 10µF, CPB = 10nF, ILOAD = 10mA VOUT (AC-COUPLED, 20µV/DIV) VOUT (AC-COUPLED, 10mV/DIV) 2.2V <-> 6V AT 1V/µs 10mA <-> 1A AT 2A/ms ILOAD (1A/DIV) VIN (2V/DIV) 200µs/DIV 200µs/DIV FIGURE 13. LOAD TRANSIENT RESPONSE FIGURE 14. LINE TRANSIENT RESPONSE 80 80 70 IOUT = 0.6A 70 IOUT = 0.2A 50 40 30 IOUT = 0.8A IOUT = 1A 20 IOUT = 0.2A IOUT = 0.6A IOUT = 0.4A 60 PSRR (dB) PSRR (dB) 60 IOUT = 0.4A 50 40 30 IOUT = 1A IOUT = 0.8A 20 10 10 CPB = 10nF 0 100 1k 10k 100k FREQUENCY (Hz) FIGURE 15. PSRR vs FREQUENCY 1M 0 100 VIN = 2.3V CPB = 10nF 10k 10k 100k 1M FREQUENCY (Hz) FIGURE 16. PSRR vs FREQUENCY Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the document is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com Submit Document Feedback 8 UG044.0 September 3, 2015