NCV47821

www.onsemi.com

3

EPAD

Vin

Vout1

CSO1

EN1

GND

EN2

CSO2

Vin

4

1

1

ADJ1

CS

EF

DE

ADJ2

Vout2

TSSOP−14 EPAD

(Top View)

Figure 3. Pin Connections

Table 1. PIN FUNCTION DESCRIPTION

Pin No.

TSSOP−14

EPAD

Pin Name

Description

1

Power Supply Input for Channel 1 and supply of control circuits of whole chip. At least 4.4 V power

supply must be used for proper IC functionality.

2

CSO1

Current Sense Output 1, Current Limit setting and Output Current value information. See Application

Section for more details.

3

EN1

Enable Input 1; low level disables the Channel 1. (Used also for OFF state diagnostics control for

Channel 1)

4

GND

Power Supply Ground.

5

EN2

Enable Input 2; low level disables the Channel 2. (Used also for OFF state diagnostics control for

Channel 2)

6

CSO2

Current Sense Output 2, Current Limit setting and Output Current value information. See Application

Section for more details.

7

Power Supply Input for Channel 2. Connect to pin 1 or different power supply rail.

8

Regulated Output Voltage 2.

9

ADJ2

Adjustable Voltage Setting Input 2. See Application Section for more details.

10

DE

Diagnostic Enable Input.

11

EF

Error Flag (Open Collector) Output. Active Low.

12

CS

Channel Select Input for OFF state diagnostics. Set CS = Low for OFF state diagnostics of Chan-

nel 1. Set CS = High for OFF state diagnostics of Channel 2. Corresponding EN pin has to be used

for diagnostics control (see Application Information section for more details).

13

ADJ1

Adjustable Voltage Setting Input 1. See Application Section for more details.

14

Regulated Output Voltage 1.

EPAD

EPAD

Exposed Pad is connected to Ground. Connect to GND plane on PCB.