NCP5603
http://onsemi.com
7
TYPICAL CHARACTERISTICS
50
60
70
80
90
100
2.5 3.0 3.5 4.0 4.5 5.0 5.5
EFFICIENCY (%)
V
in
(V)
Figure 3. Operating Modes Transitions and
Output Power Efficiency @ V
out
= 4.5 V/262 kHz
Figure 4. Operating Modes Transitions and
Output Power Efficiency @ V
out
= 4.5 V/650 kHz
Figure 5. Operating Modes Transitions and
Output Power Efficiency @ V
out
= 5.0 V/650 kHz
Figure 6. Typical Output Voltage Ripple
Figure 7. Typical Output Voltage Line Regulation Figure 8. Output Voltage Startup from Scratch
I
OUT
= 120 mA
50
60
70
80
90
100
2.5 3.0 3.5 4.0 4.5 5.0 5.5
EFFICIENCY (%)
V
bat
(V)
I
OUT
= 120 mA
50
60
70
80
90
100
2.5 3.0 3.5 4.0 4.5 5.0 5.5
EFFICIENCY (%)
V
bat
(V)
4.2
4.3
4.4
4.5
4.6
4.8
2.5 3.0 3.5 4.0 4.5 5.0 5.5
V
bat
(V)
-40°C
V
out
(V)
4.7
25°C
85°C
-40°C
25°C
85°C
Test conditions: V
bat
= 3.6 V, V
out
= 5 V, Load = 4*LW87S,
I
LED
= 25mA
I
OUT
= 160 mA
I
OUT
= 200 mA
