CAT3606

http://onsemi.com

2

Figure 1. Typical Application Circuit

CAT3606

+

−

C1+

C2+

C1−

RSET

24 kW

1 mF

1 mF

C2−

VIN

EN

RSET

VOUT

LED1

LED2

LED3

LED4

LED5

LED6

20 mA

Li−Ion

Battery

ON/OFF

ENABLE

LED1−4

ENABLE

LED5−6

GND

Main Display

Sub Display

1 mF

1 mF

ENM

ENS

Table 1. PIN DESCRIPTION

Pin #

Name

Function

1

LED6

LED6 cathode terminal

2

EN

Enable/shutdown input, active high

3

ENM

Enable “main” input for LED1 to LED4, active low

4

ENS

Enable “sub” input for LED5 and LED6, active low

5

RSET

The LED output current is set by the current sourced out of the RSET pin

6

VOUT

Charge pump output connected to the LED anodes

7

VIN

Supply voltage

8

C1+

Bucket capacitor 1 terminal

9

C1

Bucket capacitor 1 terminal

10

C2

Bucket capacitor 2 terminal

11

C2+

Bucket capacitor 2 terminal

12

LED1

LED 1 cathode terminal

13

LED2

LED 2 cathode terminal

14

LED3

LED 3 cathode terminal

15

LED4

LED 4 cathode terminal

16

LED5

LED 5 cathode terminal

PAD

GND

Ground reference