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add Texas Power PAD SO-20 (pick relevant changes from #340) #474

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Original file line number Diff line number Diff line change
Expand Up @@ -47,3 +47,55 @@ SO-4_4.4x3.9mm_P2.54mm:
pitch: 2.54
num_pins_x: 0
num_pins_y: 2

Texas_PowerPAD_SO-20-1EP_7.52x12.83mm_P1.27mm:
size_source: 'http://www.ti.com/lit/ds/symlink/opa569.pdf, http://www.ti.com/lit/an/slma004b/slma004b.pdf'
#custom_name_format: Texas_PowerPAD_SO-{pincount:d}-1EP_{size_x:.2g}x{size_y:.2g}mm_P{pitch:.2g}mm
body_size_x:
minimum: 7.45
maximum: 7.59
body_size_y:
minimum: 12.7
maximum: 12.95
overall_size_x:
minimum: 10.16
maximum: 10.65
overall_height:
nominal: 2.65
tolerance: 0
lead_width:
minimum: 0.35
maximum: 0.51
lead_len:
minimum: 0.4
maximum: 1.27
pitch: 1.27
num_pins_x: 0
num_pins_y: 10

# EP_size from OPA569 datasheet
# _overwrite from PowerPad app note slma004b.pdf
# mask size from OPA569 datasheet Figure 16: 3.56 mm x 4.47 mm
# Thermal vias from OPA569 datasheet Figure 16: 3x8=24pcs 13mil
EP_size_x:
minimum: 2.72
maximum: 3.81
EP_size_x_overwrite: 6.045 # 0.238"
EP_mask_x: 3.56
EP_size_y:
minimum: 3.49
maximum: 4.32
EP_size_y_overwrite: 12.09 # 0.476"
EP_mask_y: 4.47

thermal_vias:
count: [3, 8]
# x-pitch 0.026" = 0.66 mm
# y-pitch 0.039"/2 = 0.495 mm
drill: 0.33 # 0.013"
min_annular_ring: 0.08 # (0.495 spacing - 0.33 drill)/2 = 0.08 mm max ring
paste_via_clearance: 0.1
EP_paste_coverage: 0.75
grid: [0.66, 0.495]
paste_avoid_via: False
EP_num_paste_pads: [2, 2]