VIN (V)

1.15

1.10

1.05

1.00

0.95

0.90

0.85

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

TA = +85°C

TA = -30°C

TA = +25°C

VIN (V)

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

2.5

3.1

3.7

4.3

4.9

5.5

TA = -30°C

TA = +25°C

TA = +85°C

VIN (V)

110

105

100

95

90

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

VLED = 2.7V, 3.0V, 3.3V, 3.6V, 4.0V

Torch Code = 2

VIN (V)

105

104

103

102

101

100

99

98

97

96

95

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

TA = +85°C

TA = -30°C

TA = +25°C

VIN (V)

200

195

190

185

180

175

170

165

160

2.7

3.3

3.8

4.4

4.9

5.5

TA = -30°C

TA = +85°C

TA = +25°C

Torch Code = 6, VLED = 3.3V

VIN (V)

220

210

200

190

180

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 = 7, VLED = 3.3V

9

LM3550

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SNVS569C – MAY 2009 – REVISED OCTOBER 2016

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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 18. Torch Current vs Input Voltage Code = 6

Figure 19. Torch Current vs Input Voltage Code = 7

Figure 20. Torch Current vs Input Voltage Different VLED

Figure 21. Feedback Voltage vs Input Voltage

Figure 22. Oscillator Frequency vs Input Voltage

Figure 23. Shutdown Current vs Input Voltage