VIN (V)

155

150

145

140

135

130

125

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

TA = -30°C

TA = +85°C

TA = +25°C

Torch Code = 4, VLED = 3.3V

VIN (V)

175

170

165

160

155

150

145

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

TA = -30°C

TA = +85°C

TA = +25°C

Torch Code = 5, VLED = 3.3V

VIN (V)

110

105

100

95

90

2.7

3.3

3.8

4.4

4.9

5.5

TA = -30°C

TA = +85°C

TA = +25°C

Torch Code = 2, VLED = 3.3V

VIN (V)

130

126

122

118

114

110

2.7

3.3

3.8

4.4

4.9

5.5

TA = -30°C

TA = +85°C

TA = +25°C

Torch Code = 3, VLED = 3.3V

VIN (V)

66

64

62

60

58

56

54

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

TA = -30°C

TA = +85°C

TA = +25°C

Torch Code = 0, VLED = 3.3V

VIN (V)

90

85

80

75

70

2.7

3.3

3.8

4.4

4.9

5.5

TA = -30°C

TA = +85°C

TA = +25°C

Torch Code = 1, VLED = 3.3V

8

LM3550

SNVS569C – MAY 2009 – REVISED OCTOBER 2016

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Copyright © 2009–2016, Texas Instruments Incorporated

Typical Characteristics (continued)

Unless otherwise specified: TA = 25°C; VIN = 3.6 V; CIN = 4.7 µF, COUT = 2.2 µF, C1 = C2 = 1 µF. Super capacitor = 0.5 F

TDK EDLC272020-501-2F-50.

Figure 12. Torch Current vs Input Voltage Code = 0

Figure 13. Torch Current vs Input Voltage Code = 1

Figure 14. Torch Current vs Input Voltage Code = 2

Figure 15. Torch Current vs Input Voltage Code = 3

Figure 16. Torch Current vs Input Voltage Code = 4

Figure 17. Torch Current vs Input Voltage Code = 5