ZXLD1366_10 DIODES [Diodes Incorporated], ZXLD1366_10 Datasheet - Page 2

• Manufacturer Part Number: ZXLD1366_10
• Description: HIGH ACCURACY 1A, 60V LED DRIVER WITH INTERNAL SWITCH
• Manufacturer: DIODES [Diodes Incorporated]

Block Diagram
Pin Description
ZXLD1366
Document number: DS31992 Rev. 5 - 2
I
Name TSOT23-5 DFN3030-6
SENSE
GND
ADJ
V
LX
IN
V
IN
1
2
3
4
5
C1
4.7mF
Gnd
2, 5
1
3
4
6
Adj
3
2
1.25V
Figure 1 Pin connection for TSOT23-5 package
50K
D1
R4
2, 3, 6, 7
SO8-EP
regulator
1
4
5
8
Voltage
20K
R5
•
•
•
•
Drain of NDMOS switch
Ground (0V)
Multi-function On/Off and brightness control pin:
Connect resistor R
current I
(Note: R
Input voltage (6V to 60V). Decouple to ground with 4.7µF of higher X7R
ceramic capacitor close to device
5V
www.diodes.com
1.35V
600KHz
Leave floating for normal operation.(V
nominal average output current I
Drive to voltage below 0.2V to turn off output current
Drive with DC voltage (0.3V < V
from 25% to 200% of I
Connect a capacitor from this pin to ground to set soft-start time.
Soft start time increases approximately 0.2ms/nF
+
-
+
OUT
-
SMIN
2 of 32
0.2V
nom = 0.2V/R
= 0.2V with ADJ pin open-circuit)
R3
R1
R2
5
V
S
IN
from this pin to V
R
S
OUTnom
S
+
-
+
-
Description
Diodes Incorporated
4
A Product Line of
I
SENSE
ADJ
D1
OUTnom
IN
Low voltage
to define nominal average output
detector
< 2.5V) to adjust output current
ADJ
L1
= 0.2V/R
= V
REF
1
LX
MN
= 1.25V giving
S
)
© Diodes Incorporated
ZXLD1366
June 2010