SGM3144 Datasheet, PDF (3/12 Pages) SG Micro Corp – Charge Pump White LED Driver

SGM3144
PIN CONFIGURATION (TOP VIEW)
6-Channel PWM Dimming
Charge Pump White LED Driver
EN PWM AGND VIN
16 15 14 13
LED6 1
12 C2N
LED5 2
LED4 3
GND
11 C1N
10 C1P
LED3 4
9 C2P
5
6
7
8
LED2 LED1 PGND VOUT
TQFN-3×3-16L
PIN DESCRIPTION
PIN
NAME
I/O
FUNCTION
1, 2, 3,
4, 5, 6
LED6－LED1
I Current Sink Input. Connect the cathode of the white LEDs to these inputs.
7
PGND
- Power Ground.
8
VOUT
O
Output Voltage Source. Connect the output capacitor and the anode of the
LEDs to this pin.
9
C2P
- Positive Terminal of Bucket Capacitor 2.
10
C1P
- Positive Terminal of Bucket Capacitor 1.
11
C1N
- Negative Terminal of Bucket Capacitor 1.
12
C2N
- Negative Terminal of Bucket Capacitor 2.
13
VIN
I Supply Voltage Input.
14
AGND
- Analog Ground.
15
PWM
I
PWM Dimming Pulse. Duty cycle = 0%, I_OUT = 0mA; duty cycle = 100%, I_OUT =
27mA.
16
Exposed
Pad
EN
GND
Enable or Disable SGM3144. Logic high to enable chip, logic low to disable
I chip. For normal operation, suggest connecting to VIN only after the VIN has
settled if the VIN ramping up is slow.
- Exposed pad should be soldered to PCB board and connected to GND.
SG Micro Corp
3
www.sg-micro.com