Datasheet

EVAL-ADP2503/ADP2504
Rev. A | Page 5 of 8
TYPICAL PERFORMANCE CHARACTERISTICS
100
90
80
70
60
50
40
30
20
10
0
0.01 0.1 1 10
07512-002
EFFICIENCY (%)
I
OUT
(A)
V
IN
= 5.5V
V
IN
= 4.2V
V
IN
= 3.6V
V
IN
= 2.3V
V
IN
= 5.5V
V
IN
= 4.2V
V
IN
= 3.6V
V
IN
= 2.3V
0.001
Figure 2. Efficiency vs. Load, V
OUT
= 3.3 V, PWM and PSM
07512-003
CH1 100mV
B
W
CH4 5.00V
B
W
CH3 5.00V
B
W
CH2 1.00A Ω M 4.00µs A CH2 820mA
3
4
1
2
T 15.20%
V
IN
= 3.0V
V
OUT
= 3.3V
SW2
SW1
I
SW
V
OUT
Figure 3. Buck Boost, V
IN
= 3.0 V, V
OUT
= 3.3 V, PSM
07512-004
CH1 20.0mV
B
W
CH4 5.00V
B
W
CH3 5.00V
B
W
CH2 250mA Ω M 400ns A CH4 2.40V
3
1
2
4
T 50.00%
V
IN
= 3.0V
V
OUT
= 3.3V
SW2
SW1
I
SW
V
OUT
Figure 4. Buck Boost, V
IN
= 3.0 V, V
OUT
= 3.3 V, PWM
07512-005
CH1 20.0mV
B
W
CH4 5.00V
B
W
CH3 5.00V
B
W
CH2 250mA Ω M 400ns A CH4 2.40V
3
1
2
4
T 50.80%
V
IN
= 3.0V
V
OUT
= 3.3V
SW2
SW1
I
SW
V
OUT
Figure 5. Boost Operation, V
IN
= 3.0 V, V
OUT
= 3.3 V, PWM
07512-006
CH1 50.0mV
B
W
CH4 5.00V
B
W
CH3 5.00V
B
W
CH2 250mA Ω M 400ns A CH3 2.40V
3
4
1
2
T 50.00%
V
IN
= 4.0V
V
OUT
= 3.3V
SW2
SW1
I
SW
V
OUT
Figure 6. Buck Operation, V
IN
= 4.0 V, V
OUT
= 3.3 V, PWM
07512-007
CH1 100mV
B
W
CH4 2.00V
B
W
CH2 500mA Ω M100µs A CH2 410mA
4
1
2
T 45.40%
V
IN
= 3.6V
V
OUT
= 3.3V
SW1
I
OUT
V
OUT
Figure 7. Mode Change by Load Transients, Load Fall (V
OUT
= 3.3 V)