ZXLD1374(2010) 查看數據表（PDF） - Diodes Incorporated.
零件编号
产品描述 (功能)
生产厂家
ZXLD1374
(Rev.:2010)
(Rev.:2010)
Diodes Incorporated.
ZXLD1374 Datasheet PDF : 35 Pages
| |||
A Product Line of
Diodes Incorporated
Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated)
ZXLD1374
Symbol
VIN
VAUX
VISM
VSENSE
VLX
ILX
ISTATUS
VFLAG
VPWM, VADJ,
VTADJ, VGI
TJ
TST
Parameter
Input supply voltage relative to GND‡
Auxiliary supply voltage relative to GND‡
Current monitor input relative to GND‡
Current monitor sense voltage (VIN-VISM)
Low side switch output voltage to GND‡
Low side switch continuous output current
Status pin output current
Flag output voltage to GND‡
Other input pins to GND‡
Maximum junction temperature
Storage temperature
Rating
-0.3 to 65
-0.3 to 65
-0.3 to 65
-0.3 to 5
-0.3 to 65
1.8
±1
-0.3 to 40
-0.3 to 5.5
150
-55 to 150
Unit
V
V
V
V
V
A
mA
V
V
°C
°C
These are stress ratings only. Operation outside the absolute maximum ratings may cause device failure.
Operation at the absolute maximum rating for extended periods may reduce device reliability.
Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling and
transporting these devices.
Notes: ‡ For correct operation SGND and PGND should always be connected together.
Package Thermal Data
Thermal Resistance
Junction-to-Case, θJC
Package
TSSOP-20EP
Unit
4
°C/W
Recommended Operating Conditions
Symbol
Parameter
Performance/Comment
Min Max Unit
VIN Input supply voltage range
Normal operation
Functional (Note 2)
8
60
V
6.3
VAUX Auxiliary supply voltage range (Note 3)
Normal operation
Functional
8
6.3
60
V
VSENSE
VLX
ILX
VADJ
Differential input voltage
Low side switch output voltage
Low side switch continuous output current
External dc control voltage applied to ADJ
pin to adjust output current
VVIN-VISM, with 0 ≤ VADJ ≤ 2.5
DC brightness control mode
from 10% to 200%
0
450 mV
60
V
1.5
A
0.125 2.5
V
ISTATUS
IREF
fSW
VTADJ
fPWM
Status pin output current
Reference external load current
Recommended switching frequency range (Note 4)
Temperature adjustment (TADJ) input voltage range
Recommended PWM dimming frequency range
REF sourcing current
To maintain 1000:1 resolution
To maintain 200:1 resolution
100 µA
1
mA
300 1000 kHz
0
VREF
V
100 500 Hz
100 1000 Hz
tPWMH/L
VPWMH
VPWML
TJ
GI
PWM pulse width in dimming mode
PWM pin high level input voltage
PWM pin low level input voltage
Operating Junction Temperature Range
Gain setting ratio for Boost and Buck-boost modes
PWM input high or low
Ratio= VGI/VADJ
0.005 10
ms
2
5.5
V
0
0.4
V
-40
125
°C
0.20 0.50
Notes: 2. The functional range of VIN is the voltage range over which the device will function. Output current and device parameters may
deviate from their normal values for VIN and VAUX voltages between 6.3V and 8V, depending upon load and conditions.
3. VAUX can be driven from a voltage higher than VIN to provide higher efficiency at low VIN voltages, but to avoid false operation; a
voltage should not be applied to VAUX in the absence of a voltage at VIN.
4. The device contains circuitry to control the switching frequency to approximately 400kHz. The maximum and minimum
operating frequency is not tested in production.
ZXLD1374
Document number: DS35032 Rev. 1 - 2
Page 3 of 35
www.diodes.com
October 2010
© Diodes Incorporated
Share Link: