Datasheet

Data Sheet ADP1878/ADP1879
Rev. B | Page 13 of 40
Figure 40. Internal Rectifier Drop vs. Frequency
Figure 41. Internal Boost Rectifier Drop vs. VREG (Low Input Voltage)
Over V
IN
Variation
Figure 42. Internal Boost Rectifier Drop vs. V
REG
Figure 43. Low-Side MOSFET Body Diode Conduction Time vs. V
REG
Figure 44. Power Saving Mode (PSM) Operational Waveform, 100 mA
Figure 45. PSM Waveform at Light Load, 500 mA
80
800
720
640
560
480
400
320
240
160
300 400 500 600 700 800 900 1000
RECTIFIER DROP (mV)
FREQUENCY (kHz)
V
REG
= 2.7V
V
REG
= 5.5V
V
REG
= 3.6V
+125°C
+25°C
–40°C
09441-040
80
1280
720
640
560
480
1040
1120
1200
960
880
800
400
320
240
160
2.73.13.53.94.34.75.15.5
RECTIFIER DROP (mV)
V
REG
(V)
V
IN
= 5.5V
V
IN
= 16.5V
V
IN
= 13V
1MHz
300kHz
T
A
= 25°C
09441-041
80
720
640
560
480
400
320
240
160
2.73.13.53.94.34.75.15.5
RECTIFIER DROP (mV)
V
REG
(V)
1MHz
300kHz +125°C
+25°C
–40°C
09441-042
8
80
64
72
56
48
40
32
24
16
2.73.13.53.94.34.75.15.5
BODY DIODE CONDUCTION TIME (ns)
V
REG
(V)
1MHz
300kHz +125°C
+25°C
–40°C
09441-043
CH1 50mV
B
W
CH2 5A Ω
CH3 10V
B
W
CH4 5V
M400ns A CH2 3.90A
T 35.8%
1
2
3
4
OUTPUT VOLTAGE
INDUCTOR CURRENT
SW NODE
LOW SIDE
09441-044
CH1 50mV
B
W
CH2 5A Ω
CH3 10V
B
W
CH4 5V
M4.0µs A CH2 3.90A
T 35.8%
1
2
3
4
OUTPUT VOLTAGE
INDUCTOR CURRENT
SW NODE
LOW SIDE
09441-045