sc604a Semtech Corporation, sc604a Datasheet - Page 13

• Manufacturer Part Number: sc604a
• Description: Sc604a Low-noise, High-efficiency Regulated White Led Driver
• Manufacturer: Semtech Corporation

POWER MANAGEMENT
Typical Characteristics with 4 LEDs
2005 Semtech Corp.
3.5
2.5
1.5
140
120
100
80
70
60
50
40
30
80
60
40
4
3
2
4.2
4.2
4.2
Battery Current for 4 LEDs at 0.5mA
Battery Current for 4 LEDs at 20mA
Battery Current for 4 LEDs at 10mA
4
4.0
4
Input Voltage [V]
Input Voltage [V]
Input Voltage [V]
3.8
3.8
3.8
LED = 2.91V
3.6
3.6
3.6
LED = 3.45V
LED = 3.37V
3.4
3.4
3.4
3.2
3.2
3.2
13
100
70
60
50
40
30
20
100
90
80
70
60
50
90
80
70
60
50
4.2
4.2
4.2
Efficiency for 4 LEDs at 20mA
Efficiency for 4 LEDs at 10mA
Efficiency for 4 LEDs at 0.5mA
4
4
4
Input Voltage [V]
Input Voltage [V]
Input Voltage [V]
3.8
3.8
3.8
LED = 3.37V
LED = 2.91V
LED = 3.45V
3.6
3.6
3.6
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SC604A
3.4
3.4
3.4
3.2
3.2
3.2