© 2005 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN5026 • Rev. 1.0.8

8

Figure 6. Dual Regulator Application

Table 2. Dual Regulator BOM

Description

Qty.

Ref.

Vendor

Part Number

Capacitor 68 f, Tantalum, 25V, ESR 95m

Ω

1

C1

AVX

TPSV686*025#095

Capacitor 10nf, Ceramic

2

C2, C3

Any

Capacitor 68 f, Tantalum, 6V, ESR 1.8

Ω

1

C4

AVX

TAJB686*006

Capacitor 150nF, Ceramic

2

C5, C7

Any

Capacitor 330 f, Poscap, 4V, ESR 40m

Ω

2

C6, C8

Sanyo

4TPB330ML

Capacitor 0.1 F, Ceramic

2

C9

Any

56.2K

Ω, 1% Resistor

1

R1, R2

Any

10K

Ω, 5% Resistor

1

R3

Any

3.24K

Ω, 1% Resistor

1

R4

Any

1.82K

Ω, 1% Resistor

3

R5, R8, R9

Any

1.5K

Ω, 1% Resistor

2

R6, R7

Any

Schottky Diode 30V

2

D1, D2

Fairchild Semiconductor

BAT54

Inductor 6.4 H, 6A, 8.64m

Ω

2

L1, L2

Panasonic

ETQ-P6F6R4HFA

Dual MOSFETs with Schottky

1

Q1, Q2

Fairchild Semiconductor

FDS6986AS

(3)

DDR Controller

1

U1

Fairchild Semiconductor

FAN5026

Note:

3.

If currents above 4A continuous are required, use single SO-8 packages. For more information, refer to the

Power MOSFET Selection Section and AN-6002 for design calculations.