cat4139 Catalyst Semiconductor, cat4139 Datasheet - Page 4

• Manufacturer Part Number: cat4139
• Description: 22v High Current Boost White Led Driver
• Manufacturer: Catalyst Semiconductor

CAT4139
TYPICAL CHARACTERISTICS
V
Doc. No. MD-5032 Rev. A
IN
= 5.0V, I
Output Current vs. Input Voltage
OUT
95
90
85
80
75
Efficiency vs. Output Current
200
180
160
140
120
100
80
= 180mA, T
3.0
Power-up at 180mA
100 120 140 160 180 200
OUTPUT CURRENT [mA]
3.5
INPUT VOLTAGE [V]
AMB
4.0
= 25ºC, with typical application circuit unless otherwise specified.
4.5
5.0
5.5
4
95
90
85
80
75
-0.5
-1.0
-1.5
-2.0
2.0
1.5
1.0
0.5
0.0
Efficiency vs. Input Voltage
Output Current Regulation
4.5
4.5
Switching Waveform
IOUT = 120mA
4.7
4.7
INPUT VOLTAGE [V]
INPUT VOLTAGE [V]
4.9
4.9
Characteristics subject to change without notice
IOUT = 180mA
5.1
5.1
© Catalyst Semiconductor, Inc.
5.3
5.3
5.5
5.5