8

d.

R1 = 68.1k

Ω, 1%

e.

R2 = 68.1k

Ω / [(3.30V / 0.80V) – 1] ≅ 21.5kΩ, 1%

f.

Rz2 = 68.1k

Ω (1.0V / 15V) (60khz / 20khz) ≈ 11.8kΩ, 1%

g.

Cz2 = 1 /

π (11.8kΩ) (20khz) ≈ 1,000pF, X7R

h.

Cp1 = 1 / 2

π (11.8kΩ) (1.7Mhz) ≈ 10pF => Select Cp1 = 22pF for noise filtering

i.

Rz3 = 2 (68.1k

Ω) (20khz) / 600khz ≈ 5.23kΩ, 1%

j.

Cz3 = 1 /

π (5.23kΩ) (600khz) ≅ 100pF, COG

k.

Cf1 = 100pF to stabilize SP7652EU internal Error Amplify

+5V INPUT WITH A TYPE III COMPENSATION APPLICATION SCHEMATIC

Figure 13 shows another example of SP7652EU configures for +5V input by simply

changing a few external resistors and capacitors components value for delivering a 0-

8A output with excellent line and load regulation.

Figure 13. SP7652EU Configures for Vin = 5V, Vout = 3.3V at 0-8A Output Load Current