cat37tdi-t3 Catalyst Semiconductor, cat37tdi-t3 Datasheet - Page 3

• Manufacturer Part Number: cat37tdi-t3
• Description: Cmos White Led Driver Boost Converter
• Manufacturer: Catalyst Semiconductor

ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
Typical application circuit with external components is shown on page 1.
ELECTRICAL OPERATING CHARACTERISTICS
Over recommended operating conditions unless otherwise specified. T
Notes:
(1) These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods
©
Characteristics subject to change without notice
Parameter
V
SW voltage
Storage Temperature Range
Junction Temperature
Lead Soldering Temperature (10 secs)
ESD Rating – Human Body Model
Parameter
V
Ambient Temperature Range
Inductor L1
Input Capacitor C1
Output Capacitor C2
I
Symbol
LED
Catalyst Semiconductor, Inc.
IN
IN
I
I
, FB, SHDN
SHDN
V
DC
may affect device reliability. All voltages are with respect to ground.
f
I
I
SWL
I
SW
SD
FB
with 1 to 4 LEDs in series
Q
FB
¯¯¯¯¯
Parameter
Input Voltage Range
Quiescent Current
Shutdown Current
FB Pin Voltage
FB Pin Leakage Current
Shutdown High Threshold
Shutdown Low Threshold
Shutdown Pin Current
Boost Converter Frequency
Maximum Switch Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
Efficiency
voltage
(1)
Conditions
V
V
4 LEDs at 15 mA
I
Switch Off, V
Figure 1 with specified components
SW
FB
SHDN
= 300 mA
= 0.2 V
6.8 ± 20% typical
1.0 ± 20% typical
1.0 ± 20% typical
= 0 V
-65 to +160
-40 to +85
2.5 to 7
Rating
3
Range
0 to 20
2000
125
300
SW
20
8
= 5 V
A
= 25ºC, V
Unit
Unit
mA
µH
µF
µF
°C
ºC
ºC
ºC
V
V
V
V
IN
0.85
Min
400
2.5
0.8
85
90
= 3V and V
0.05
0.01
Typ
550
150
0.5
1.2
95
95
83
1
¯¯¯¯¯
SHDN
Doc. No. MD-5005 Rev. T
Max
0.25
105
780
200
0.7
1.6
= 3V.
7
1
2
1
5
CAT37
Units
MHz
mV
mA
mV
mA
µA
µA
nA
µA
%
%
V
V
V