CAT3606
1 m F
1 m F
Li ? Ion
Battery +
?
C IN
1 m F
ON/OFF
C1+
VIN
EN
C1 ? C2+ C2 ?
VOUT
CAT3606
LED1
Main Display
Sub Display
C OUT
1 m F
ENABLE
LED1 ? 4
ENM
LED2
LED3
ENABLE
LED5 ? 6
RSET
24 k W
ENS
RSET
GND
LED4
LED5
LED6
20 mA
Figure 1. Typical Application Circuit
Table 1. PIN D ESCRIPTION
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PAD
Name
LED6
EN
ENM
ENS
RSET
VOUT
VIN
C1+
C1
C2
C2+
LED1
LED2
LED3
LED4
LED5
GND
Function
LED6 cathode terminal
Enable/shutdown input, active high
Enable “main” input for LED1 to LED4, active low
Enable “sub” input for LED5 and LED6, active low
The LED output current is set by the current sourced out of the RSET pin
Charge pump output connected to the LED anodes
Supply voltage
Bucket capacitor 1 terminal
Bucket capacitor 1 terminal
Bucket capacitor 2 terminal
Bucket capacitor 2 terminal
LED 1 cathode terminal
LED 2 cathode terminal
LED 3 cathode terminal
LED 4 cathode terminal
LED 5 cathode terminal
Ground reference
http://onsemi.com
2
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