RC5061 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

Manufacturer

RC5061

High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms

Fairchild Semiconductor 

PRODUCT SPECIFICATION

RC5061

Table 2. RC5061 Application Bill of Materials

(Components based on Worst Case Analysis—See Appendix for Details)

Reference Manufacturer Part # Quantity Description

C1

AVX

TAJB475M010R5

1

4.7µF, 10V Capacitor

C2, C5

Panasonic

ECU-V1C105ZFX

2

1µF, 16V Capacitor

C3-4,C6

Panasonic

ECU-V1H104ZFX

3

100nF, 50V Capacitor

C8-9

Sanyo

6MV1000FA

2

1000µF, 6.3V Electrolytic

C10-11

Any

2

22µF, 6.3V Capacitor

CIN

Sanyo

10MV1200GX

*

1200µF, 10V Electrolytic

COUT

Sanyo

6MV1500GX

*

1500µF, 6.3V Electrolytic

D1

Motorola

MBRD835L

1

8A Schottky Diode

L1

Any

Optional 2.5µH, 8A Inductor

L2

Q1

Q2

Q3-4

R1

R2-3

R4

R6

R7

U1

Any

Fairchild

FDB6030L

Fairchild

FDB7030BL

Fairchild

FDB4030L

Any

Any

Any

Any

Any

Fairchild

RC5061M

1

1.3µH, 20A Inductor

1

N-Channel MOSFET

1

N-Channel MOSFET

2

N-Channel MOSFET

1

33Ω

2

4.7Ω

1

10KΩ

1

10Ω

1

*

1

DC/DC Controller

Requirements/Comments

Low ESR

IRMS = 2A

ESR ≤ 44mΩ

DCR ~ 10mΩ

See Note 1.

DCR ~ 2mΩ

RDS(ON) = 20mΩ @

VGS = 4.5V See Note 2.

RDS(ON) = 10mΩ @

VGS = 4.5V See Note 2.

Notes:

1. Inductor L1 is recommended to isolate the 5V input supply from noise generated by the MOSFET switching, and to comply

with Intel dI/dt requirements. L1 may be omitted if desired.

2. For 17.4A designs using the TO-220 MOSFETs, heatsinks with thermal resistance ΘSA < 20°C/W should be used. For designs

using the TO-263 MOSFETs, adequate copper area should be used. For details and a spreadsheet on MOSFET selections,

refer to Applications Bulletins AB-8 and AB-15.

*Refer to Appendix for values.

REV. 1.0.0 7/6/00

9

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