XLSEMI

Datasheet

2.1A 100KHz 90V Buck DC to DC Converter

XL7056

Rev 1.2

www.xlsemi.com

2

Pin Configurations

Figure2. Pin Configuration of XL7056 (Top View)

Table 1 Pin Description

Pin Number

Pin Name

Description

1

GND

Ground Pin. Care must be taken in layout. This pin should be

placed outside of the Schottky Diode to output capacitor ground

path to prevent switching current spikes from inducing voltage

noise into XL7056.

2

FB

Feedback Pin (FB). Through an external resistor divider

network, Feedback senses the output voltage and regulates it.

The feedback threshold voltage is 1.25V.

3

CSN

Current Sense Negative Terminal.

4

SW

Power Switch Output Pin (SW). Output is the switch node that

supplies power to the output. The Metal is SW.

5

CSP

Current Sense Positive Terminal.

6

VC

Internal Voltage Regulator Bypass Capacity. In typical system

application, The VC pin connect a 1uF capacitor to VIN.

7

VIN

Supply Voltage Input Pin. XL7056 operates from 8V to 80V DC

voltage. Bypass Vin to GND with a suitably large capacitor to

eliminate noise on the input.