ZXLD1370

Document number: DS32165 Rev. 6 - 2

5 of 40

www.diodes.com

December 2016

© Diodes Incorporated

ZXLD1370

Symbol

Parameter

Performance/Comment

Min

Max

Unit

Input Supply Voltage Range

Normal Operation

8

60

V

Reduced Performance Operation

(Note 7)

6.3

Auxiliary Supply Voltage Range (Note 8)

Normal Operation

8

60

V

Reduced Performance Operation

(Note 7)

6.3

Current Sense Monitor Input Range

—

6.3

60

V

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 200%

0.125

2.5

V

Reference External Load Current

REF Sourcing Current

1

mA

Recommended Switching Frequency Range (Note 9)

—

300

1,000

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. Device starts up above 6V and as such the minimum applied supply voltage has to be above 6.5V (plus any noise margin). The ZXLD1370 will,

however, continue to function when the input voltage is reduced from

≥ 8V down to 6.3V.

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

9. The device contains circuitry to control the switching frequency to approximately 400kHz. The maximum and minimum operating frequency is not

tested in production.