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ADP1877ACPZ-R7 Datasheet(PDF) 12 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) 12 Page - Analog Devices

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ADP1877
Rev. 0 | Page 12 of 32
CH3 1V
CH2 2V
CH1 10V
CH4 1V
M10ms
A CH2
1.52V
CSS = 100nF
VOUT (CH3)
SS (CH4)
EN
SW
1
2
3
4
Figure 17. Enable Function
CH3 2V
CH2 2V
CH1 10V
CH4 2V Ω
M10ms
A CH2
3.76V
SW1
PGOOD1
VCCO (CH3)
VOUT, PRELOADED (CH4)
1
2
3
4
Figure 18. Thermal Shutdown Waveform
–2.5
–2.0
–1.5
–1.0
–0.5
0
0.5
246
8
10
12
14
VIN (V)
300kHz
600kHz
850kHz
REFERENCE AT VIN = 2.75V
Figure 19. Change in fOSC vs. VIN
–2.5
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
–40
–15
10
35
60
85
110
135
TEMPERATURE (°C)
VIN = 12V; REFERENCED AT 25°C
Figure 20. fOSC vs. Temperature
50
100
150
200
250
300
350
2.5
4.5
6.5
8.5
10.5
12.5
14.5
VIN (V)
DH MINIMUM OFF TIME
DH MINIMUM ON TIME
Figure 21. Typical DH Minimum On Time and Off Time
–4
–3
–2
–1
0
1
2
3
4
–40
–15
10
35
60
85
110
135
TEMPERATURE (°C)
DH MINIMUM ON TIME
DH MINIMUM OFF TIME
Figure 22. DH Minimum On Time and Off Time Overtemperature



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