SMT POWER INDUCTORS Flat Coils - PG0277NL Series Height: 6.5mm Max Footprint: 14.5mm x 13.2mm Max Current Rating: up to 35A Inductance Range: 0.38µH to 2.65µH RoHS compliant Self-leaded version of PG0077 series Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C 1 2 MAX Inductance @0A DC (μH ±20%) Saturation 4 Current Isat (A) Heating 5 Current I DC (A) Core Loss 6 Factor K2 0.75 0.80 0.45 48 35 33.5 31 1.20 1.30 0.80 38 31 42.5 1.32 26 2.00 2.10 1.40 28 26 57.8 1.90 21 2.80 2.90 2.00 24 21 67.6 2.65 17 4.10 4.20 2.80 20 17 80.1 Part 8,9 Number Inductance @Irated (μH TYP) PG0277.401NL DCR (mΩ) Irated 3 (A) TYP 0.38 35 PG0277.801NL 0.75 PG0277.142NL PG0277.202NL PG0277.282NL Schematic Mechanical .256 6,50 MAX .571 MAX 14,50 .520 13,20 MAX 2x .161 ± .005 4,10 ± 0,12 PG0277.XXXNL Date Code Country of Origin .193 ± .005 4,90 ± 0,12 .945 ± .012 24,00 ± 0,30 .583 ± .005 14,80 ± 0,12 SUGGESTED PAD LAYOUT 1 2 Weight......................5.5 grams Tape & Reel ................300/reel Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .010 0,25 .945 24,00 TAPE & REEL LAYOUT USA 858 674 8100 • UK 44 1483 401 700 • France 33 3 84 35 04 04 • Singapore 65 6287 8998 • Shanghai 86 21 54643211 / 2 • China 86 769 5538070 • Taiwan 886 3 4641811 www.pulseeng.com 63 SPM2006 (2/08) SMT POWER INDUCTORS Flat Coils - PG0277NL Series Notes from Tables tested at the system level, to verify the temperature rise of the component during system operation. 6. Core loss approximation is based on published core data: 1. The temperature of the component (ambient plus temperature rise) must be within the specified operating temperature range. 2. Inductance at Irated is a typical inductance value for the component taken at rated current. 3. The rated current listed is the lower of the saturation current @ 25°C or the heating current. 4. The saturation current, ISAT, is the current at which the component inductance drops by 20% (typical) at an ambient temperature of 25°C. This current is determined by placing the component in the specified ambient environment and applying a short duration pulse current (to eliminate self-heating effects) to the component. 5. The heating current, IDC, is the DC current required to raise the component temperature by approximately 40°C. The heating current is determined by mounting the component on a typical PCB and applying current for 30 minutes. The temperature is measured by placing the thermocouple on top of the unit under test. Take note that the component’s performance varies depending on the system condition. It is suggested that the component be Core Loss = K1 * (f)1.30 * (K2ΔI)2.41 Where: Core Loss = in Watts K1= 3.50E-10 f = switching frequency in kHz K1 & K2 = core loss factors ΔI = delta I across the component in Ampere ΔI = one half of the peak to peak flux density K2Δ across the component in Gauss 7. Unless otherwise specified, all testing is made at 100kHz, 0.1VAC. 8. Optional Tape & Reel packaging can be ordered by adding a "T" suffix to the part number (i.e. PG0277.401NL becomes PG0277.401NLT). Pulse complies to industry standard tape and reel specification EIA481. Inductance vs Current Characteristics INDUCTANCE (µH) 3.0 PG0277.282NL 2.5 PG0277.202NL 2.0 1.5 PG0277.142NL 1.0 PG0277.801NL 0.5 PG0277.401NL 59 55 51 47 43 39 35 31 27 23 19 15 11 7 3 0 0.0 DC BIAS (A) Typical Core Loss vx Peak Flux Density 2.00 1.80 CoreLoss (W) 1.60 400 kHz 1.40 1.20 1.00 0.80 300 kHz 100 kHz 200 kHz 500 kHz 1.0 MHz 0.60 0.40 0.20 0.00 100 200 300 400 600 500 700 800 900 1000 DB (Gauss) where DB = K2DI USA 858 674 8100 • UK 44 1483 401 700 • France 33 3 84 35 04 04 • Singapore 65 6287 8998 • Shanghai 86 21 54643211 / 2 • China 86 769 5538070 • Taiwan 886 3 4641811 www.pulseeng.com 64 SPM2006 (2/08)