ZXLD1350ET5 Diodes Inc, ZXLD1350ET5 Datasheet - Page 2

• Manufacturer Part Number: ZXLD1350ET5
• Description: IC, LED DRIVER, BUCK, TSOT-23-5
• Manufacturer: Diodes Inc

Specifications of ZXLD1350ET5

• Led Driver Application: Automotive Lighting, Illuminated Signs
• No. Of Outputs: 1
• Output Current: 350mA
• Output Voltage: 30V
• Input Voltage: 7V To 30V
• Dimming Control Type: PWM / DC
• Topology: Buck
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ZXLD1350
Document number: DS33468 Rev. 8 - 2
Block Diagram
Pin Description
I
Name
SENSE
GND
ADJ
V
LX
IN
Pin No.
1
2
3
4
5
V
IN
Drain of NDMOS switch
Ground (0V)
Multi-function On/Off and brightness control pin:
• Leave floating for normal operation.(V
• Drive to voltage below 0.2V to turn off output current
• Drive with DC voltage (0.3V<V
• Drive with PWM signal from open-collector or open-drain transistor, to adjust output current.
• Connect a capacitor from this pin to ground to increase soft-start time. (Default soft-start time=0.5ms.
Connect resistor R
(Note: R
Input voltage (7V to 30V). Decouple to ground with 1µF of higher X7R ceramic capacitor close to
device
I
Adjustment range 25% to 100% of I
Additional soft-start time is approx.0.5ms/nF)
OUTnom
C1
SMIN
=0.1/R
GND
ADJ
=0.27V with ADJ pin open circuit)
Vref
S
)
Figure 1. Block diagram – Pin Connection
Voltage
regulator
S
V
from this to V
200k
IN
1.25V
4KHz
5V
www.diodes.com
Shutdown
circuit
ADJ
IN
<2.5V) to adjust output current from 25% to 200%
to define nominal average output current I
2 of 22
OUTnom
ADJ
= V
V
IN
R1
R2
R3
for f>10kHz and 1% to 100% of I
Description
30V 350mA LED DRIVER with AEC-Q100
Current sense circuit
REF
=1.25V giving nominal average output current
Comparator
+
-
R
D1
S
+
-
Diodes Incorporated
A Product Line of
I
SENSE
LX
L1
MN
OUTnom
OUTnom
for f<500Hz
(†)
=0.1/R
of I
© Diodes Incorporated
ZXLD1350
OUTnom
S
March 2011