ADP1879 Analog Devices, ADP1879 Datasheet - Page 7

• Manufacturer Part Number: ADP1879
• Description: Synchronous Buck Controller with Constant On-Time and Valley Current Mode with Power Saving Mode
• Manufacturer: Analog Devices

Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
100
100
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
5
0
5
0
10
10
10
V
V
V
V
V
IN
IN
IN
V
IN
IN
IN
= 13V (PSM)
= 16.5V (PSM)
= 16.5V (PSM)
= 16.5V (PSM)
= 5V (PSM)
Figure 4. Efficiency—300 kHz, V
Figure 5. Efficiency—300 kHz, V
= 13V (PSM)
Figure 6. Efficiency—300 kHz, V
V
IN
= 13V (PSM)
100
100
100
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
V
IN
T
V
f
WÜRTH INDUCTOR:
744325072, L = 0.72µH, DCR = 1.3mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
T
V
f
WÜRTH INDUCTOR:
744325120, L = 1.2µH, DCR = 1.8mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
T
V
f
WÜRTH INDUCTOR:
7443551200, L = 2.0µH, DCR = 2.6mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
SW
SW
V
SW
A
A
A
OUT
OUT
OUT
= 16.5V
IN
= 25°C
= 25°C
= 25°C
= 300kHz
= 300kHz
= 300kHz
= 13V
V
= 0.8V
= 1.8V
= 7V
1k
1k
1k
IN
V
V
IN
= 13V
IN
= 13V
= 16.5V
V
IN
OUT
OUT
OUT
= 16.5V
= 0.8 V
= 1.8 V
10k
10k
10k
= 7 V
100k
100k
100k
Rev. 0 | Page 7 of 40
100
100
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
5
0
5
0
10
10
10
V
IN
V
V
IN
V
= 16.5V (PSM)
IN
IN
Figure 7. Efficiency—600 kHz, V
Figure 8. Efficiency—600 kHz, V
V
= 20V (PSM)
(PSM)
Figure 9. Efficiency—600 kHz, V
= 16.5V (PSM)
IN
= 16.5V
V
= 13V (PSM)
IN
V
= 13V (PSM)
100
100
IN
100
= 13V (PSM)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
V
T
V
f
WÜRTH INDUCTOR:
744355147, L = 0.47µH, DCR = 0.67mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
T
V
f
WÜRTH INDUCTOR:
744325072, L = 0.72µH, DCR = 1.3mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
T
V
f
WÜRTH INDUCTOR:
744318180, L = 1.4µH, DCR = 3.2mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
SW
SW
SW
A
IN
A
A
OUT
OUT
OUT
V
= 25°C
= 25°C
= 25°C
= 13V
V
IN
= 600kHz
= 600kHz
= 600kHz
IN
= 0.8V
= 1.8V
= 5V
1k
1k
1k
= 13V
ADP1878/ADP1879
V
= 20V
IN
V
V
= 16.5V
IN
IN
= 16.5V
= 16.5V
OUT
OUT
OUT
= 0.8 V
= 1.8 V
10k
10k
10k
= 5 V
100k
100k
100k