2

POWER SUPPLY DATA

Torch Mode 150mA Iout

0

50

100

150

200

250

3.0

3.2

3.4

3.6

3.8

4.0

4.2

Vin (V)

Vf = 3.5V

Vf = 3.3V

Vf = 3.1V

Vf = 3.0V

Flash Mode 400m A Iout

0

100

200

300

400

500

600

3.0

3.2

3.4

3.6

3.8

4.0

4.2

Vin (V)

Vf = 4.1V

Vf = 3.8V

Vf = 3.5V

Vf = 3.2V

Figure 1. Torch Mode Output Current

Figure 2. Flash Mode Output Current

Torch Mode 150m A Efficiency

40

50

60

70

80

90

100

3.0

3.2

3.4

3.6

3.8

4.0

4.2

Vin (V)

Vf = 3.5V

Vf = 3.3V

Vf = 3.1V

Vf = 3.0V

Flash Mode 400m A Efficiency

40

50

60

70

80

90

100

3.03.2

3.43.6

3.84.0

4.2

Vin (V)

Vf = 4.1V

Vf = 3.8V

Vf = 3.5V

Vf = 3.2V

Figure 3. Torch Mode Efficiency

Figure 4. Flash Mode Efficiency

Ch1 = EN

Ch2 = Vout

Ch4 = Iin

(0.5A/div)

Figure 5. Startup 150mA Torch, Vin=3.6V, Vout=3.1V.

Figure 6. Startup 400mA Flash, Vin=3.6V, Vout=3.5V.

Ch1 = Vin (AC)

50mV/div

Ch2 = Vout (AC)

50mV/div

Figure 7. Ripple 150mA Torch, Vin=4.2V, Vout=3.1V.

Figure 8. Ripple 400mA Flash, Vin=3.6V, Vout=3.5V

Cin=4.7uF, CFC=0.47uF, Cout=2.2uF.

Cin=4.7uF, CFC=0.47uF, Cout=2.2uF.

EN

Vout

Iin

0.5A/div

EN

Vout

Iin

0.5A/div

Vin

Vout

Vin

Vout