ZXLD1366ET5TA Diodes Zetex, ZXLD1366ET5TA Datasheet - Page 23

• Manufacturer Part Number: ZXLD1366ET5TA
• Description: IC LED DRIVR WHITE BCKLGT TSOT-5
• Manufacturer: Diodes Zetex
• Type: Backlight, White LEDr

Specifications of ZXLD1366ET5TA

• Topology: PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Type - Secondary: High Brightness LED (HBLED), White LED
• Frequency: 500kHz
• Voltage - Supply: 6 V ~ 60 V
• Voltage - Output: 60V
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 1A
• Internal Switch(s): Yes
• Efficiency: 97%
• Operating Supply Voltage (typ): 9/12/15/18/24V
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Operating Temperature Classification: Automotive
• Package Type: TSOT-23
• Pin Count: 5
• Mounting: Surface Mount
• Power Dissipation: 1.8W
• Operating Supply Voltage (min): 6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ZXLD1366E5TA; ZXLD1366E5TR; ZXLD1366E5TR

Application Information
Diode Selection
For maximum efficiency and performance, the rectifier (D1) should be a fast low capacitance Schottky diode* with low reverse
leakage at the maximum operating voltage and temperature.
They also provide better efficiency than silicon diodes, due to a combination of lower forward voltage and reduced recovery
time.
It is important to select parts with a peak current rating above the peak coil current and a continuous current rating higher than
the maximum output load current. It is very important to consider the reverse leakage of the diode when operating above
85°C. Excess leakage will increase the power dissipation in the device and if close to the load may create a thermal runaway
condition.
The higher forward voltage and overshoot due to reverse recovery time in silicon diodes will increase the peak voltage on the
LX output. If a silicon diode is used, care should be taken to ensure that the total voltage appearing on the LX pin including
supply ripple, does not exceed the specified maximum value.
*A suitable Schottky diode would be B3100 (Diodes Inc).
ZXLD1366
Document number: DS31992 Rev. 6 - 2
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Legend
47µH
68µH
100µH
150µH
Figure 5. ZXLD1366 Minimum recommended inductor (SO-8EP)
Figure 5. ZXLD1366 Minimum recommended inductor (SO-8EP)
10
(Continued)
20
T < 70°C, I
C
www.diodes.com
Supply Voltage (V)
47µH
23 of 30
30
LED
= 1A
Diodes Incorporated
40
A Product Line of
68µH
100µH
50
© Diodes Incorporated
ZXLD1366
March 2011
150µH
60