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ZHCS400 Datasheet(PDF) 2 Page - Diodes Incorporated

Part # ZHCS400
Description  LED DRIVER SOLUTION FOR LCD BACKLIGHTING
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

ZHCS400 Datasheet(HTML) 2 Page - Diodes Incorporated

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ABSOLUTE MAXIMUM RATINGS:
Supply Voltage
-0.3 to 10V
Maximum Voltage other pins
-0.3 to VCC+0.3V
Power Dissipation
450mW
Operating Temperature
-40 to 85 °C
Storage Temperature
-55 to 150°C
SEMICO NDUC TORS
ZXSC310
ISSUE 3 - SEPTEMBER 2007
2
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Efficiency
(1)
94
%
V
CC
Recommended supply
voltage range
0.8
8
V
V
CC(min)
Minimum startup and
operating voltage
I
DRIVE=-600µA, VDRIVE=0.7V
I
DRIVE=-600µA, VDRIVE=0.7V,
T
AMB=-10°C
(3)
0.8
0.9
0.92
V
I
Q
Quiescent current
(2)
V
EN = VCC (enabled)
V
EN = 0V (standby)
0.2
510
mA
µA
I
VDRIVE
Base drive current
V
DRIVE =0.7V, VISENSE =0V
1.5
3.5
mA
I
CC
Supply current
(3)
V
DRIVE =0.7V, VISENSE =0V
2
4
mA
V
VDRIVE(high)
High level drive voltage
V
ISENSE =0V, IVDRIVE =-0.5mA
V
CC
-0.3
V
CC
V
V
VDRIVE(low)
Low level drive voltage
V
ISENSE = 50mV, IVDRIVE =5mA
0
0.2
V
V
STDN(high)
Device enabled
0.7
V
V
STDN(low)
Device in standby mode
0.15
V
I
STDN
Enable input current
-1
1
µA
V
ISENSE
(threshold)
Output current reference
voltage
14
19
24
mV
T
CVISENSE
I
SENSE voltage temp co.
(2)
0.4
%/°C
I
ISENSE
I
SENSE input current
V
ISENSE =0V
0
-30
-65
µA
T
DRV
Discharge Pulse Width
1.2
1.7
3.2
µs
ELECTRICAL CHARACTERISTICS:
Test conditions unless otherwise stated: VCC=1.5V, TAMB=25 C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
F
OSC
Recommended operating
frequency
(4)
200
kHz
OPERATING CONDITIONS
(1) Application dependent, see reference designs
(2) These parameters guaranteed by Design and characteristics
(3) Total supply current =IQ +IVDRIVE, see typical characteristics
(4) Operating frequency is application circuit dependent. See applications section.


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