ZXLD1366 查看數據表（PDF） - Diodes Incorporated.
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ZXLD1366 Datasheet PDF : 32 Pages
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A Product Line of
Diodes Incorporated
ZXLD1366
Electrical Characteristics (Test conditions: VIN = 24V, Tamb = 25°C, unless otherwise specified.)(a) (cont.)
Symbol
VADJon
Parameter
DC voltage on ADJ pin to switch device
from quiescent (off) state to active (on)
state
Condition
VADJ rising
Min.
0.2
Typ.
0.25
Max.
0.3
RADJ
Resistance between ADJ pin and VREF
0< VADJ< VREF
VADJ>VREF +100mV
30
50
65
10.4 14.2 18
ILXmean
Continuous LX switch current
1
RLX
LX switch ‘On’ resistance
@ ILX = 1A
0.5 0.75
ILX(leak)
LX switch leakage current
5
Duty cycle range of PWM signal applied to PWM frequency <300Hz
ADJ pin during low frequency PWM
0.001
1
DPWM(LF) dimming mode
PWM amplitude = VREF
Brightness control range
Measured on ADJ pin
1000:1
DCADJ(*)
DC Brightness control range
See note (*)
5:1
Time taken for output
current to reach 90% of
Soft start time
TSS
final value after voltage on
ADJ pin has risen above
2
0.3V. Requires external
capacitor 22nF. See
graphs for more details
ADJ pin floating
fLX
Operating frequency
(See graphs for more details)
L=68mH (0.2V)
IOUT=1A @ VLED=3.6V
260
Driving 3 LEDs
TONmin
TOFFmin
Minimum switch ‘ON’ time
Minimum switch ‘OFF’ time
LX switch ‘ON’
LX switch ‘OFF’
130(†)
70(†)
TPWmin_REC
Recommended minimum switch
pulse width
LX switch ‘ON’ or ‘OFF’
800
fLXmax
Recommended maximum operating
frequency
500
Recommended duty cycle range of output
DLX
switch at fLXmax
0.3
0.7
Notes: (*) Ratio of maximum brightness to minimum brightness before shutdown VREF = 1.25/0.3. VREF externally driven to 2.5V, ratio 10:1.
(†) Parameters are not tested at production. Parameters are guaranteed by design, characterization and process control.
Unit
V
kΩ
A
Ω
µA
ms
kHz
ns
ns
ns
kHz
ZXLD1366
Document number: DS31992 Rev. 5 - 2
4 of 32
www.diodes.com
June 2010
© Diodes Incorporated
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