3

Figure 1. Efficiency Vs Output Current

Figure 2. Efficiency Vs Output Current

(Vout = 3.3V) Rlim=2.5K

(Vout = 3.3V) Rlim=5K

Figure 3. Line/Load Rejection Vs Output Current

Figure 4. Line/Load Rejection Vs Output Current

(Vout = 3.3V) Rlim=2.5K

(Vout = 3.3V) Rlim=5K

Figure 5. No-Load Battery Current Vs Vbatt

Figure 6. Maximum Load Current Vs Vbatt

(Vout = 3.3V)

(Vout = 3.3V)

Figure 7. Load Transient Response

Figure 8. SP6644 and SP6201 Output Ripple

Rlim=2.5K (Vin = 1.3V,Vout = 3.3V)

Rlim=2.5K (Vin = 1.3V,Vout = 3.3V, Iout=80mA)

40

50

60

70

80

90

100

0.1

1.0

10.0

100.0

1000.0

Iload (mA)

Vb=1.0V

Vb=1.3V

Vb=2.0V

Vb=2.6V

Vb=3.2V

40

50

60

70

80

90

100

0.1

1.0

10.0

100.0

1000.0

Iload (mA)

Vb=1.0V

Vb=1.3V

Vb=2.0V

Vb=2.6V

Vb=3.2V

3.27

3.28

3.29

3.30

3.31

3.32

3.33

0

20 40 60 80 100 120 140 160 180 200

Iload (mA)

Vb=1.3V

Vb=2.6V

3.27

3.28

3.29

3.30

3.31

3.32

3.33

0

10 20 30 40506070 80 90 100

Iload (mA)

Vb=1.3V

Vb=2.6V

10

100

1000

10000

0.0

1.0

2.0

3.0

4.0

Vbatt (V)

Rlim=2.5k

Rlim=5k

0

20

40

60

80

100

120

140

160

180

200

220

240

0.0

1.0

2.0

3.0

4.0

Vbatt (V)

Rlim=2.5K

Rlim=5K

Inductor

0.5A/div

Vout

50mV/div

Vbatt

50mV/div

SP6201

10mV/div

SP6644

20mV/div