Datasheet

Data Sheet ADP1877
Rev. D | Page 11 of 32
0
1
2
3
4
5
6
0123456
VCCO (V)
V
IN
(V)
08299-029
Figure 11. VCCO vs. V
IN
CH1 10V
CH3 5V
CH2 10V M1µs A CH1 5.60V
SW1
SW2
SYNC 600kHz
08299-035
1
3
2
Figure 12. An Example of Synchronization, f
SW
= 600 kHz
CH1 50mV
CH4 5A Ω
M200µs A CH4 8.10A
OUTPUT RESPONSE
5A TO 10A STEP LOAD
V
IN
= 12V
V
OUT
= 1.8V
08299-036
1
4
Figure 13. Step Load Transient of Figure 42, 5 A to 10 A
CH1 20mV
CH4 500mA Ω
M100µs A CH4 750mA
V
IN
= 3V
V
OUT
= 1.8V
OUTPUT RESPONSE
OUTPUT STEP LOAD 0.5A TO 0.8A
08299-037
1
4
Figure 14. Step Load Transient of Figure 44
2
CH3 1V
CH2 5VCH1 5V
CH4 1A Ω
M1ms A CH1 2.4V
V
IN
= 12V
V
OUT
= 1.8V
OUTPUT PRECHARGED TO 1V
DH1
DL1
VOUT1
IL1
08299-038
1
3
4
Figure 15. Soft Start into Precharged Output
CH3 10V
CH2 1VCH1 5V
CH4 500mV
M2ms A CH2 2.42V
EN IS TIED TO VIN
VIN POWER SUPPLY
V
OUT
(CH2)
SS
SW
08299-039
C
SS
= 100nF
1
3
2
4
Figure 16. Power-On Sequence