cat37tdi-t3 Catalyst Semiconductor, cat37tdi-t3 Datasheet - Page 4

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

CAT37
TYPICAL CHARACTERISTICS
V
Doc. No. MD-5005 Rev. T
IN
= 3.6V, T
110
105
100
1.3
1.2
1.1
1.0
0.9
0.8
30
20
10
95
90
85
80
0
1
2
0
Switching Frequency vs. Input Voltage
AMB
4 LEDs
FB Pin Voltage vs. LED Current
LED Current vs. Input Voltage
3 LEDs
3 LEDs
2
4 LEDs
= 25ºC, C
3
5
INPUT VOLTAGE [V]
INPUT VOLTAGE [V]
LED CURRENT [mA]
3
IN
= 4.7µF, C
10
4
4
20mA
10mA
10mA
20mA
3 LEDs
3 LEDs
OUT
15
5
5
= 1µF, L = 6.8µH, unless otherwise specified.
20
6
6
4
16.0
15.5
15.0
14.5
14.0
1.3
1.2
1.1
1.0
0.9
0.8
100
95
90
85
80
-50
-50
-50
Switching Frequency vs. Temperature
LOAD = 3 LEDs VIN
= 3.6V
4LEDs at 15mA
VIN = 3.6V
4 LEDs at 15mA
VIN = 3.6V
LOAD = 3 LEDs
VIN = 3.6V
FB Pin Voltage vs. Temperature
-25
-25
-25
LED Current vs. Temperature
0
0
0
TEMPERATURE [ºC]
TEMPERATURE [ºC]
TEMPERATURE [ºC]
LOAD =20 mA
4 LEDs
Characteristics subject to change without notice
LOAD = 20mA
4 LEDs
25
25
25
©
50
50
50
Catalyst Semiconductor, Inc.
75
75
75
100
100
100