SGM3131 Datasheet, PDF (3/13 Pages) SG Micro Corp – Driver with Low Dropout Current Source

SGM3131
120mA 4-Channel Charge Pump White LED
Driver with Low Dropout Current Source
PIN CONFIGURATION (TOP VIEW)
N.C. EN AGND VIN
16 15 14 13
ISET 1
12 C2N
N.C. 2
LED4 3
GND
11 C1N
10 C1P
LED3 4
9 C2P
5
6
7
8
LED2 LED1 PGND VOUT
TQFN-3x3-16L
PIN DESCRIPTION
PIN
1
2, 16
3, 4, 5, 6
7
8
9
10
11
12
13
14
15
Exposed
Pad
NAME
ISET
N.C.
LED4－LED1
PGND
VOUT
C2P
C1P
C1N
C2N
VIN
AGND
EN
GND
I/O
FUNCTION
I
Connect a resistor between this pin and GND to set the maximum current through the
LEDs.
- No internal connection.
I Current sink input. Connect the cathode of the white LEDs to these inputs.
- Power ground.
O Connect the output capacitor and the anode of the LEDs to this pin.
- Positive terminal of bucket capacitor 2.
- Positive terminal of bucket capacitor 1.
- Negative terminal of bucket capacitor 1.
- Negative terminal of bucket capacitor 2.
I Supply voltage input.
- Analog ground.
I Chip enable (Active High), and connects to GPIO pin of MCU.
- Exposed pad should be soldered to PCB board and connected to GND.
SG Micro Corp
3
www.sg-micro.com