ZXLD1371 View Datasheet(PDF) - Diodes Incorporated.

Part Name

Description

Manufacturer

ZXLD1371

60V HIGH A CCURACY BUCK/BOOS T/BUCK-BO OST LED D RIVER-CONT ROLLER

Diodes Incorporated. 

A Product Line of

Diodes Incorporated

ZXLD1371

Electrical Characteristics (Test conditions: 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 8)

4.5

V

VUV+

Under-Voltage detection threshold

Switch disabled to normal operation

VIN or VAUX rising (Note 8)

4.9

V

IQ-IN

IQ-AUX

ISB-IN

ISB-AUX

VREF

ΔVREF

Quiescent current into VIN

Quiescent current into VAUX

Standby current into VIN.

Standby current into VAUX.

Internal reference voltage

Change in reference voltage with output

current

PWM pin floating.

Output not switching

PWM pin grounded

for more than 15ms

No load

Sourcing 1mA

Sinking 25µA

1.5 3 mA

150 300 µA

90 150 µA

0.7 10 µA

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, 8.0V<VIN = <60V

-60 -90

±50

dB

ppm/°C

IADJ

ADJ input current (Note 9)

VADJ ≤ 1.25V

VADJ = 5.0V

VGI

GI Voltage threshold for boost and buck-

boost modes selection (Note 9)

VADJ = 1.25V

100 nA

5

µA

0.8 V

IGI

GI input current (Note 9)

VGI ≤ 1.25V

VGI = 5.0V

100 nA

5

µA

IPWM

tPWMoff

PWM input current

PWM pulse width

(to enter shutdown state)

VPWM = 5.5V

PWM input low

36 100 µA

10 15 25 ms

TSDH

Thermal shutdown upper threshold

(GATE output forced low)

Temperature rising.

150

ºC

TSDL

Thermal shutdown lower threshold

(GATE output re-enabled)

Temperature falling.

125

ºC

High-Side Current Monitor (Pin ISM)

IISM

VSENSE_acc

VSENSE-OC

Input Current

Accuracy of nominal VSENSE threshold

voltage

Over-current sense threshold voltage

Measured into ISM pin VISM = 12V

VADJ = 1.25V

11 20 µA

±0.25 ±2 %

300 350 375 mV

Notes:

8. UVLO levels are such that all ZXLD1371 will function above 5.4V for rising supply voltages and function down to 5V for falling supply voltages.

9. The ADJ and GI pins have an internal clamp that limits the internal node to less than 3V. This provides some failsafe should those pins get

overdriven.

ZXLD1371

Document number: DS35436 Rev. 1 - 2

5 of 42

www.diodes.com

February 2012

© Diodes Incorporated

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