FAN4860 データシートの表示（PDF） - Fairchild Semiconductor

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FAN4860

3MHz, 5V Output Synchronous TinyBoost™ Regulator

Fairchild Semiconductor 

Block Diagrams

Pin Configuration

Figure 2. IC Block Diagram

Figure 3. WLCSP (Top View)

Figure 4. WLCSP (Bottom View)

Figure 5. 2X2mm UMLP (Top View)

Pin Definitions

Pin #

WLCSP UMLP

A1

6

B1

5

C1

4

C2

3

B2

2

A2

1, P1

Name Description

VIN

SW

EN

FB

VOUT

GND

Input Voltage. Connect to Li-Ion battery input power source and input capacitor (CIN).

Switching Node. Connect to inductor.

Enable. When this pin is HIGH, the circuit is enabled. This pin should not be left floating.

Feedback. Output voltage sense point for VOUT. Connect to output capacitor (COUT).

Output Voltage. This pin is both the output voltage terminal as well as an IC bias supply.

Ground. Power and signal ground reference for the IC. All voltages are measured with

respect to this pin.

© 2009 Fairchild Semiconductor Corporation

FAN4860 • Rev. 1.0.3

2

www.fairchildsemi.com

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