B1077AS-4R7N AD [Analog Devices], B1077AS-4R7N Datasheet - Page 11

• Manufacturer Part Number: B1077AS-4R7N
• Description: 1.2 A, 20 V, 700 kHz/1.4 MHz, Nonsynchronous Step-Down Regulator
• Manufacturer: AD [Analog Devices]

1
3
2
1
1
4
2
4
2
CH1
CH3
CH1
CH1
Figure 36. ADP2301 Short-Circuit Recovery, V
Figure 35. ADP2301 Short-Circuit Entry, V
7 V to 15 V, V
5mV
5V
1V
1V
B
B
W
W
Figure 34. ADP2301 Line Transient,
B
W
V
V
OUT
CH2 10V
CH4 1A Ω
OUT
CH2 10V
IL
CH2 10V
CH4
OUT
= 3.3 V, I
SW
(f
(f
1A Ω
SW
SW
= 1.4 MHz)
= 1.4 MHz)
B
B
W
W
B
B
SW
W
W
OUT
B
W
M10µs
= 1.2 A, f
M1ms
M100µs
IL
SW
A CH1
A CH3
V
= 1.4 MHz
V
SW
A CH1
OUT
OUT
IN
OUT
= 3.3 V
= 3.3 V
2.56V
11.4V
1.2V
Rev. 0 | Page 11 of 28
–100
–100
–100
100
–20
–40
–60
–80
100
–20
–40
–60
–80
100
–20
–40
–60
–80
80
60
40
20
80
60
40
20
80
60
40
20
0
0
0
1k
1k
1k
CROSS FREQUENCY: 127kHz
PHASE MARGIN: 53°
CROSS FREQUENCY: 80kHz
PHASE MARGIN: 68°
CROSS FREQUENCY: 27kHz
PHASE MARGIN: 76°
Figure 37. ADP2301 Bode Plot, V
Figure 38. ADP2301 Bode Plot, V
Figure 39. ADP2300 Bode Plot, V
(f
(f
(f
SW
SW
SW
= 1.4 MHz, L = 4.7 μH, C
= 1.4 MHz, L = 4.7 μH, C
= 700 kHz, L = 10 μH, C
10k
10k
10k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
1
100k
100k
100k
1
ADP2300/ADP2301
1
OUT
OUT
OUT
OUT
OUT
OUT
= 5.0 V, V
= 3.3 V, V
= 5.0 V, V
= 22 μF)
= 10 μF)
= 22 μF)
2
2
2
IN
IN
IN
1M
1M
1M
= 12 V
= 12 V
= 12 V
200
160
120
80
40
0
–40
–80
–120
–160
–200
200
160
120
80
40
0
–40
–80
–120
–160
–200
200
160
120
80
40
0
–40
–80
–120
–160
–200