ZXLD1374EST20TC 데이터 시트보기 (PDF) - Diodes Incorporated.

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ZXLD1374EST20TC

60V HIGH ACCURACY 1.5A BUCK/BOOST/BUCK-BOOST LED DRIVER CONVERTER WITH AEC-Q100

Diodes Incorporated. 

A Product Line of

Diodes Incorporated

ZXLD1374

Electrical Characteristics (VIN = VAUX = 12V, @TA = +25°C, unless otherwise specified.)

Symbol

Parameter

Conditions

Min Typ Max Units

Supply and Reference Parameters

VUV-

Under-Voltage Detection Threshold

Normal Operation to Switch Disabled

VIN or VAUX falling (Note 10)

5.2

5.6

6.3

V

VUV+

Under-Voltage Detection Threshold

Switch Disabled to Normal Operation

VIN or VAUX rising (Note 10)

5.5

6

6.5

V

IQ-IN

IQ-AUX

ISB-IN

ISB-AUX

Quiescent Current into VIN

Quiescent Current into VAUX

Standby Current into VIN.

Standby Current into VAUX.

PWM pin floating.

Output not switching

PWM pin grounded for more than 15ms

1.5

3

mA

150 300

µA

90

150

µA

0.7

10

µA

VREF

ΔVREF

Internal Reference Voltage

Change in Reference Voltage with Output

Current

No load

Sourcing 1mA

Sinking 25µA

1.237 1.25 1.263

V

-5

mV

5

VREF_LINE Reference Voltage Line Regulation

VREF-TC Reference Temperature Coefficient

DC-DC Converter Parameters

VIN = VAUX, 6.5V < VIN = <60V

-60

-90

+/-50

dB

ppm/°C

VADJ

External DC Control Voltage Applied to ADJ Pin DC brightness control mode

to Adjust Output Current (Note 11)

10% to 200%

0.125 1.25 2.5

V

IADJ

ADJ Input Current (Note 11)

VADJ ≤ 2.5V

VADJ = 5.0V

VGI

GI Voltage Threshold for Boost and Buck-Boost

Modes Selection (Note 11)

VADJ = 1.25V

100

nA

5

µA

0.8

V

IGI

IPWM

tPWMoff

GI Input Current (Note 11)

PWM Input Current

PWM Pulse Width

(to enter shutdown state)

VGI ≤ 2.5V

VGI = 5.0V

VPWM = 5.5V

PWM input low

100

nA

5

µA

36

100

µA

10

15

25

ms

TSDH

Thermal Shutdown Upper Threshold

(LX output inhibited)

Temperature rising

150

°C

TSDL

Thermal Shutdown Lower Threshold

(LX output re-enabled)

Temperature falling

125

°C

High-Side Current Monitor (Pin ISM)

IISM

Input Current

Measured into ISM pin and VISM = VIN

VSENSE_acc

VSENSE-OC

Accuracy of Nominal VSENSE Threshold Voltage

Over-Current Sense Threshold Voltage

VADJ = 1.25V

11

20

µA

±0.25 ±2

%

300

350

375

mV

Notes:

10. UVLO levels are such that all ZXLD1374 will function above 6.5V for rising supply voltages and function down to 6.3V for falling supply voltages.

11. The ADJ and GI pins have an internal clamp that limits the internal node to less than 3V. This limits the switch current should those pins get

overdriven.

ZXLD1374

Document number: DS35032 Rev. 3 - 2

6 of 39

www.diodes.com

September 2012

© Diodes Incorporated

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