ZXLD1360Q 데이터 시트보기 (PDF) - Diodes Incorporated.
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ZXLD1360Q Datasheet PDF : 22 Pages
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ZXLD1360Q
Electrical Characteristics (Test conditions: VIN = 12V, TA = +25°C, unless otherwise specified.)
Symbol
Parameter
Condition
Min. Typ. Max. Unit
VSU Internal regulator start-up threshold
VIN rising
5.65
V
VSD
IINQoff
Internal regulator shutdown threshold
Quiescent supply current with output off
VIN falling
ADJ pin grounded
5.55
V
20 40
µA
IINQon
Quiescent supply current with output switching
(Note 7)
ADJ pin floating
f=250kHz
1.8 5.0 mA
VSENSE
Mean current sense threshold voltage
(Defines LED current setting accuracy)
Measured on ISENSE pin with respect to
VIN VADJ = 1.25V
95
100 105
mV
VSENSEHYS Sense threshold hysteresis
±15
%
ISENSE
VREF
VREF/T
ISENSE pin input current
Internal reference voltage
Temperature coefficient of VREF
VSENSE = VIN-0.1
1.25 10
µA
Measured on ADJ pin with pin floating 1.25
V
50 ppm/°C
VADJ
External control voltage range on ADJ pin for DC
brightness control (Note 5)
0.3 2.5
V
VADJoff
DC voltage on ADJ pin to switch device from active
(on) state to quiescent (off) state
VADJ falling
0.15 0.2 0.25
V
VADJon
DC voltage on ADJ pin to switch device from
quiescent (off) state to active (on) state
VADJ rising
0.2 0.25 0.3
V
RADJ Resistance between ADJ pin and VREF
0 < VADJ < VREF
VADJ > VREF +100mV
135
250
kΩ
13.5
25
ILXmean
RLX
Continuous LX switch current
LX switch ‘On’ resistance
@ ILX=0.55A
1
A
0.5 1.0
Ω
ILX(leak)
DPWM(LF)
LX switch leakage current
Duty cycle range of PWM signal applied to ADJ pin
during low frequency PWM dimming mode
Brightness control range
PWM frequency <500Hz
PWM amplitude = VREF
Measured on ADJ pin
5
µA
0.01
1
100:1
DPWM(HF)
Duty cycle range of PWM signal applied to ADJ pin PWM frequency >10kHz
during high frequency PWM dimming mode
PWM amplitude = VREF
Brightness control range
Measured on ADJ pin
0.16
1
5:1
DCADJ
tSS
DC brightness control range
Soft start time
(Note 8)
5:1
Time taken for output current to reach
90% of final value after voltage on ADJ 500
µs
pin has risen above 0.3V
Operating frequency
fLX
(See graphs for more details)
ADJ pin floating L = 33µH (0.093V)
IOUT = 1A @ VLED = 3.6V
280
kHz
Driving 1 LED
tOFFMIN
tONMIN
Minimum switch off-time
Minimum switch on-time
200
ns
240
ns
tPD
Internal comparator propagation delay
50
ns
Notes:
5. 100% brightness corresponds to VADJ = VADJ(nom) = VREF (~1.25V). Driving the ADJ pin above VREF will increase the VSENSE threshold and output
current proportionally.
6. ZXLD1360Q will operate at higher frequencies, but due to propagation delays accuracy will be affected.
7. Static current of device is approximately 450 µA, see Supply Current Graph, Page 10.
8. Ratio of maximum brightness to minimum brightness before shutdown VREF = 1.25/0.3. VREF externally driven to 2.5V, ratio 10:1.
ZXLD1360Q
Document number: DS37115 Rev. 1 - 2
4 of 22
www.diodes.com
September 2015
© Diodes Incorporated
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