CAT4240TD-GT3 ON Semiconductor, CAT4240TD-GT3 Datasheet - Page 4

• Manufacturer Part Number: CAT4240TD-GT3
• Description: IC LED DRVR WHITE BCKLGHT TSOT-5
• Manufacturer: ON Semiconductor
• Type: Backlight, White LEDr

Specifications of CAT4240TD-GT3

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 800kHz ~ 1.3MHz
• Voltage - Supply: 2.8 V ~ 5.5 V
• Voltage - Output: 38V
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 60mA
• Internal Switch(s): Yes
• Efficiency: 94%
• Number Of Segments: 10
• High Level Output Current: 750 mA
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Supply Current: 1.5 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 4240TD-GT3; CAT4240TD-GT3TR

350
300
250
200
150
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100
95
90
85
80
8
50
Figure 12. Power−up with 6 LEDs at 300 mA
Figure 8. LED Current vs. Input Voltage
Figure 10. Efficiency vs. Load Current
9
100
10
INDUCTOR VOLTAGE (V)
(V
LED CURRENT (mA)
IN
11
= 5 V, V
150
(6 LEDs)
RSET = 1 W
VOUT = 19.5 V
RSET = 2 W
VOUT = 18.8 V
12
L
= 13 V, T
200
13
AMB
TYPICAL CHARACTERISTICS
14
= 25°C, typical application circuit unless otherwise specified.)
250
15
http://onsemi.com
300
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4
−0.5
−1.0
−1.5
−2.0
100
2.0
1.5
1.0
0.5
95
90
85
80
0
8
8
Figure 11. Efficiency vs. Inductor Voltage
9
9
Figure 9. LED Current Regulation
Figure 13. Switching Waveform
10
10
INDUCTOR VOLTAGE (V)
INDUCTOR VOLTAGE (V)
6 LEDs @ 150 mA
11
11
(6 LEDs)
12
12
13
13
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14
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