ZXSC400 Zetex Semiconductors plc., ZXSC400 Datasheet - Page 2

• Manufacturer Part Number: ZXSC400
• Description: Led Driver Boost Converter
• Manufacturer: Zetex Semiconductors plc.

ABSOLUTE MAXIMUM RATINGS
V
DRIVE
EOR
STDN
SENSE
Operating Temp.
Storage Temp.
Power Dissipation
ELECTRICAL CHARACTERISTICS
Test Conditions V
Note
1
2
3
4
ZXSC400
Excluding gate/base drive current.
I
System not device spec, including recommended transistors. 10.5V represents 3 white LEDs.
Change in LED current with changing supply voltage (LED V
CC
FB
Symbol
Supply parameters
V
Iq
I
Eff
Acc
TCO
T
F
Input parameters
V
I
V
I
V
V
dV
Output parameters
I
I
V
C
dILD
STDN
SENSE
FB
OUT
DRIVE
OSC
is typically half these values at 300mV.
DRIVE
IN
SENSE
FB
IH
IL
DRIVE
DRIVE
1
2
LN
1
REF
REF
3
4
Parameter
V
Quiescent Current
Shutdown Current
Efficiency
Reference tolerance
Reference Temp Co
Discharge pulse width
Operating Frequency
Sense voltage
Sense input current
Feedback voltage
Feedback input current
Shutdown high voltage
Shutdown low voltage
Line voltage regulation
Output current
Transistor drive current
Transistor voltage drive
Mosfet gate drive cpbty
Load current regulation
CC
Range
CC
-0.3V to
-0.3V to
-0.3V to
-0.3V to
-0.3V to
-40°C to
-55°C to
450mW
= 3V, T= -40 C to 85 C unless otherwise stated.
+10V
V
V
The lower of (+5.0V) or (V
The lower of (+5.0V) or (V
+85°C
+125°C
CC
CC
+ 0.3V
+ 0.3V
Conditions
V
30mA > I
1.8V < V
1.8V < V
V
V
Vin > 2V, Vout = 10.5V
Vdrive = 0.7V
1.8V < V
CC
FB
FB
F
x number of series LEDs).
= 0V, V
= 0V, V
= 8V
CC
CC
CC
LED
2
< 8V
< 8V
SENSE
SENSE
< 8V
> 10mA
CC
CC
= 0V
= 0V
+ 0.3V)
+ 0.3V)
Min
-3.0
-1.2
291
1.8
1.5
22
50
-1
0
2
0
0.005
Limits
Typ
300
300
4.5
1.7
0.5
3.5
80
28
-7
ISSUE 1 - JANUARY 2003
V
Max
0.55
-4.5
C C
220
200
309
-15
3.0
V
0.1
34
8
5
-0.4
C C
Units
V
%
%
%/ C
kHz
mV
mV
V
V
%/V
mA
mA
V
pF
mA/V
A
A
s
A
A