SC4201 데이터 시트보기 (PDF) - Semtech Corporation

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SC4201

Multi-Phase Link Controller

Semtech Corporation 

SC4201

POWER MANAGEMENT

Pin Configuration

Top View

Ordering Information

Part Number (1)

SC4201IMSTR

SC4201EVB

Package

MSOP-8

Evaluation Board

(MSOP-8)

Note:

(1) Only available in tape and reel packaging. A reel

contains 2500 devices.

Pin Descriptions

Pin

Pin Name Pin Function

1

RT

Oscillator frequency is configured by connecting resistor R from RT to ground. Values for R can

be selected to provide desired 3 phase or 4 phase output frequencies.

FOUT ≈ {[1.25 /(15pF x Rt)]/ phase}

2

VDD

The power input connection for the device.

3

SYNC SYNC is a positive edge triggered input with a threshold of 1.5V. SYNC should be grounded

when not required or connected to an external synchronization clock with frequency higher than

the on board oscillator frequency (with respect to internal clock).

4

A

Logic level output clock. Phase "A".

5

B

Logic level output clock. Phase "B".

6

C

Logic level output clock. Phase "C".

7

D

Logic level output clock and phase selection pin. Default operation 4 phase/2 phase

(90°/180°). Tie D to VDD to select 3 phase operation through A, B and C 120° out of phase.

8

GND

Reference ground and power ground for all functions.

Block Diagram

 2002 Semtech Corp.

3

www.semtech.com

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