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ADP1877ACPZ-R7 Datasheet(PDF) 11 Page - Analog Devices

Part # ADP1877ACPZ-R7
Description  Dual Output Synchronous Buck PWM Controller With Tracking
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP1877ACPZ-R7 Datasheet(HTML) 11 Page - Analog Devices

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ADP1877
Rev. 0 | Page 11 of 32
0
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012
3456
VIN (V)
Figure 11. VCCO vs. VIN
CH1 10V
CH3 5V
CH2 10V
M1µs
A CH1
5.60V
SW1
SW2
SYNC 600kHz
1
3
2
Figure 12. An Example of Synchronization, fSW = 600 kHz
CH1 50mV
CH4 5A Ω
M200µs
A CH4
8.10A
OUTPUT RESPONSE
5A TO 10A STEP LOAD
VIN = 12V
VOUT = 1.8V
1
4
Figure 13. Step Load Transient of Figure 42, 5 A to 10 A
CH1 20mV
CH4 500mA Ω
M100µs
A CH4
750mA
VIN = 3V
VOUT = 1.8V
OUTPUT RESPONSE
OUTPUT STEP LOAD 0.5A TO 0.8A
1
4
Figure 14. Step Load Transient of Figure 44
2
CH3 1V
CH2 5V
CH1 5V
CH4 1A Ω
M1ms
A CH1
2.4V
VIN = 12V
VOUT = 1.8V
OUTPUT PRECHARGED TO 1V
DH1
DL1
VOUT1
IL1
1
3
4
Figure 15. Soft Start into Precharged Output
CH3 10V
CH2 1V
CH1 5V
CH4 500mV
M2ms
A CH2
2.42V
EN IS TIED TO VIN
VIN POWER SUPPLY
VOUT (CH2)
SS
SW
CSS = 100nF
1
3
2
4
Figure 16. Power-On Sequence



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