CAT3604 Datasheet, PDF (2/11 Pages) Catalyst Semiconductor – 4-Channel Regulated Charge Pump White LED Driver

Battery ⁺
V_IN ^−
3 V to 4.2 V
CAT3604
1 μF
1 μF
C_IN
EN
1 μF _{Control 0}
Control 1
Control 2
R_SET
24 kW
C1+ C1− C2+ C2−
VIN
VOUT
EN CAT3604
CTR0
LED1
CTR1
LED2
CTR2
LED3
RSET _GND LED4
V_OUT
C_OUT
1 μF
20 mA
Figure 1. Typical Application Circuit
Table 1. PIN DESCRIPTION
Pin #
Name
Function
1
EN
Enable input, active HIGH
2
CTR0
Digital control input 0
3
CTR1
Digital control input 1
4
CTR2
Digital control input 2
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
GND
Ground reference
13
LED4
LED 4 cathode terminal
14
LED3
LED 3 cathode terminal
15
LED2
LED 2 cathode terminal
16
LED1
LED 1 cathode terminal
Pad
GND Pad
Ground reference
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