| COMP1 |
2 |
2 |
O |
Compensation network (channel 1) |
| COMP2 |
— |
12 |
O |
Compensation network (channel 2) |
| DIAG1 |
5 |
5 |
O |
Diagnostic pin (open, short, LED current) (channel 1) |
| DIAG2 |
— |
13 |
O |
Diagnostic pin (open, short, LED current) (channel 2) |
| GDRV1 |
14 |
22 |
O |
Gate driver NMOS-FET (channel 1) |
| GDRV2 |
— |
20 |
O |
Gate driver NMOS-FET (channel 2) |
| GND |
6 |
6 |
— |
Ground |
| ICTRL1 |
1 |
1 |
I |
LED current-control pin, analog dimming (channel 1) |
| ICTRL2 |
— |
11 |
I |
LED current control pin, analog dimming (channel 2) |
| ISN1 |
18 |
26 |
I |
Current-sense input – negative (channel 1) |
| ISN2 |
— |
16 |
I |
Current-sense input – negative (channel 2) |
| ISNS1 |
15 |
23 |
I |
Overcurrent sense input (channel 1) |
| ISNS2 |
— |
19 |
I |
Overcurrent sense input (channel 2) |
| ISP1 |
17 |
25 |
I |
Current-sense input – positive (channel 1) |
| ISP2 |
— |
17 |
I |
Current-sense input – positive (channel 2) |
| NC |
9 |
— |
— |
No internal connection |
| 10 |
| 11 |
| 12 |
| OVFB1 |
3 |
3 |
I |
Voltage-feedback input (channel 1) |
| OVFB2 |
— |
10 |
I |
Voltage feedback input (channel 2) |
| PGND1 |
16 |
24 |
— |
Power ground (channel 1) |
| PGND2 |
— |
18 |
— |
Power ground (channel 2) |
| PWMIN1 |
7 |
7 |
I |
PWM input and channel enable or disable function (channel 1) |
| PWMIN2 |
— |
9 |
I |
PWM input and channel enable or disable function (channel 2) |
| PWMO1 |
20 |
28 |
O |
PWM PMOS-FET driver output (channel 1) |
| PWMO2 |
— |
14 |
O |
PWM PMOS-FET driver output (channel 2) |
| RT |
4 |
4 |
I |
Oscillator pin and pin for external sync. frequency |
| VCC |
13 |
21 |
O |
Gate-drive supply voltage (external decoupling capacitor) |
| VIN |
8 |
8 |
I |
Supply voltage |
| VOUT1 |
19 |
27 |
I |
Connect to boost output voltage (channel 1) |
| VOUT2 |
— |
15 |
I |
Connect to boost output voltage (channel 2) |
| Thermal pad |
— |
Solder to achieve appropriate power dissipation. Connect to PGND. |