FAN5066 查看數據表（PDF） - Fairchild Semiconductor

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FAN5066

Ultra Low Voltage Synchronous DC-DC Controller

Fairchild Semiconductor 

FAN5066

PRODUCT SPECIFICATION

Table 3. FAN5066 Application Bill of Materials for DDR VTT

Reference

Manufacturer Part #

Quantity Description

C1–2, C6–C9 Panasonic

ECU-V1H104ZFX

6

100nF, 50V Capacitor

C4–5

Panasonic

ECU-V1C105ZFX

2

1µF, 16V Capacitor

C10

Panasonic

1

100pF Capacitor

ECU-V1H101JCG

C11

Sanyo

6SP680M

1

680µF, 6.3V OSCON

COUT

Sanyo

4SP820M

4

820µF, 4V OSCON

D1

Motorola

1N4735A

1

6.2V Zener Diode

L1

Coiltronics

UP1B-1R5

Optional 1.5µH, 4A Inductor

L2

Coiltronics

UP4B-1R5

1

1.5µH, 13A Inductor

Q1–2

Fairchild

FDS6680S

2

N-Channel MOSFET

w/ Integrated Schottky

R1

Any

R2-3

Any

R4

Any

R5-6

Any

1

47Ω

2

4.7Ω

1

10KΩ

2

499Ω

U1

Fairchild

FAN5066M

1

DC/DC Controller

Requirements/Comments

5%, C0G

IRMS = 4.8A

ESR < 12mΩ

DCR ~ 20mΩ

See Note 1.

DCR ~ 4mΩ

RDS(ON) = 17mΩ @

VGS = 4.5V

Notes:

1. Inductor L1 is recommended to isolate the 5V input supply from noise generated by the MOSFET switching. L1 may be

omitted if desired.

Test Circuit

+12V

47Ω

+5V

0.1µF

VCCA

1µF

VCCQP

4.7Ω

HIDRV

3000pF

VCCP

1µF

4.7Ω

LODRV

3000pF

tR

90%

50%

10%

tDT1

50%

tF

90%

50%

10%

tDT2

HIDRV

50%

LODRV

GNDA GNDD GNDP

Figure 3. Output Drive Test Circuit and Timing Diagram

10

REV. 2.1.4 11/13/01

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