ZXLD1371Q

ZXLD1371Q

Document number: DS37116 Rev. 1 - 2

4 of 42

www.diodes.com

September 2015

© Diodes Incorporated

ZXLD1371Q

ESD Susceptibility

ESD Susceptibility

Rating

Unit

HBM

Human Body Model

1,500

V

CDM

Charged Device Model

1,000

V

Caution:

Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when

handling and transporting these devices.

Package Thermal Data

Thermal Resistance

Package

Typical

Unit

TSSOP-16 EP

50

°C/W

TSSOP-16 EP

23

°C/W

Symbol

Parameter

Performance/Comment

Min

Max

Unit

Input supply voltage range

Normal Operation

8.0

60

V

(Note 8) Reduced performance

operation

5.0

8.0

Auxiliary supply voltage range (Note 9)

Normal Operation

8.0

60

V

(Note 8) Reduced performance

operation

5.0

8.0

Differential input voltage

0

450

mV

External DC control voltage applied to ADJ pin to adjust

output current

DC brightness control mode

from 10% to 100%

0.125

1.25

V

Reference external load current

REF sourcing current

—

1

mA

Recommended switching frequency range

(Note 10)

300

1000

kHz

—

0

V

Recommended PWM dimming frequency range

To achieve 1000:1 resolution

100

500

Hz

To achieve 500:1 resolution

100

1,000

Hz

PWM pulse width in dimming mode

PWM input high or low

0.002

10

ms

PWM pin high level input voltage

—

2

5.5

V

PWM pin low level input voltage

—

0

0.4

V

Operating Junction Temperature Range

—

-40

+125

°C

GI

Gain setting ratio for boost and buck-boost modes

0.20

0.50

—

Notes:

7.

Measured on “High Effective Thermal Conductivity Test Board" according to JESD51.

8.

Device starts up above 5.4V and as such the minimum applied supply voltage has to be above 5.4V (plus any noise margin). The ZXLD1371Q

will, however, continue to function when the input voltage is reduced from  8V down to 5.0V.

When operating with input voltages below 8V the output current and device parameters may deviate from their normal values; and is dependent

on power MOSFET switch, load and ambient temperature conditions. To ensure best operation in Boost and Buck-Moost Modes with input

9.

10. The device contains circuitry to control the switching frequency to approximately 400kHz.