744770933 查看數據表（PDF） - Diodes Incorporated.

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产品描述 (功能)

生产厂家

744770933

60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER CONTROLLER

Diodes Incorporated. 

A Product Line of

Diodes Incorporated

ZXLD1370

Electrical Characteristics (Test conditions: VIN = VAUX = 12V, TA = 25°C, unless otherwise specified.)

Symbol

Parameter

Supply and reference parameters

VUV-

Under-Voltage detection threshold

Normal operation to switch disabled

VUV+

Under-Voltage detection threshold

Switch disabled to normal operation

IQ-IN

Quiescent current into VIN

IQ-AUX

Quiescent current into VAUX

ISB-IN

Standby current into VIN.

ISB-AUX

VREF

ΔVREF

Standby current into VAUX.

Internal reference voltage

Change in reference voltage with output

current

Conditions

VIN or VAUX falling

VIN or VAUX rising

PWM pin floating.

Output not switching

PWM pin grounded

for more than 15ms

No load

Sourcing 1mA

Sinking 100 µA

Min Typ Max Units

5.2 5.6 6.3

V

5.5

6 6.5

V

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

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

VREF-TC Reference temperature coefficient

DC-DC converter parameters

VADJ‡

External dc control voltage applied to ADJ DC brightness control mode

pin to adjust output current

10% to 200%

-60 -90

+/-50

dB

ppm/°C

0.125 1.25 2.5 V

IADJ

ADJ input current

VADJ ≤ 2.5V

VADJ = 5.0V†

VGI‡

GI Voltage threshold for boost and buck-

boost modes selection

VADJ = 1.25V

100 nA

5

µA

0.8 V

IGI

GI input current

IPWM

PWM input current

tPWMoff

PWM pulse width

(to enter shutdown state)

TSDH

Thermal shutdown upper threshold

(GATE output forced low)

TSDL

Thermal shutdown lower threshold

(GATE output re-enabled)

High-Side Current Monitor (Pin ISM)

IISM

Input Current

VGI ≤ 2.5V

VGI = 5.0V†

VPWM = 5.5V

PWM input low

Temperature rising.

Temperature falling.

Measured into ISM pin and

VISM = 12V

100 nA

5

µA

36 100 µA

10 15 25 ms

150

ºC

125

ºC

11 20 µA

VSENSE_acc

Accuracy of nominal VSENSE threshold

voltage

VSENSE-OC Over-current sense threshold voltage

VADJ = 1.25V

±0.25 ±2 %

300 350 375 mV

Notes: † 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.

ZXLD1370

Document number: DS32165 Rev. 2 - 2

4 of 33

www.diodes.com

May 2010

© Diodes Incorporated

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