ADP1873ARMZ-0.3-R7 Analog Devices Inc, ADP1873ARMZ-0.3-R7 Datasheet - Page 13

• Manufacturer Part Number: ADP1873ARMZ-0.3-R7
• Description: 300kHz, Light Load Eff Enabled
• Manufacturer: Analog Devices Inc

Specifications of ADP1873ARMZ-0.3-R7

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 300kHz
• Duty Cycle: 84%
• Voltage - Supply: 2.75 V ~ 20 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Frequency-max: 300kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADP1873ARMZ-0.3-R7TR

Figure 42. Lower Side MOSFET Body Conduction Time vs. V
Figure 40. Internal Boost Rectifier Drop vs. V
1280
1200
1120
1040
960
880
800
720
640
560
480
400
320
240
160
720
640
560
480
400
320
240
160
80
80
80
72
64
56
48
40
32
24
16
8
2.7
2.7
2.7
Figure 41. Internal Boost Rectifier Drop vs. V
3.1
3.1
3.1
V
V
V
300kHz
1MHz
IN
IN
IN
= 5.5V
= 13V
= 16.5V
3.5
3.5
3.5
over VIN Variation
3.9
3.9
3.9
V
V
V
DD
DD
DD
1MHz
300kHz
+125°C
+25°C
–40°C
(V)
(V)
(V)
4.3
4.3
4.3
300kHz
1MHz
DD
4.7
4.7
4.7
(Low Input Voltage)
DD
(Low Input Voltage)
T
5.1
5.1
5.1
DD
A
+125°C
+25°C
–40°C
= 25°C
5.5
5.5
5.5
Rev. A | Page 13 of 40
Figure 43. Power Saving Mode (PSM) Operational Waveform, 100 mA
1
2
3
4
1
2
3
4
4
1
3
CH1 50mV
CH3 10V
CH1 50mV
CH3 10V
CH1 5A Ω
CH3 10V
Figure 44. PSM Waveform at Light Load, 500 mA
Figure 45. CCM Operation at Heavy Load, 18 A
(See Figure 91 for Application Circuit)
B
B
W
W
CH4 100mV
B
B
W
W
CH2 5A Ω
CH4 5V
CH2 5A Ω
CH4 5V
B
W
M400ns
M4.0µs
M400ns
T
T
T
ADP1872/ADP1873
35.8%
35.8%
30.6%
SW NODE
OUTPUT VOLTAGE
INDUCTOR CURRENT
SW NODE
LOW SIDE
OUTPUT VOLTAGE
INDUCTOR CURRENT
OUTPUT VOLTAGE
INDUCTOR CURRENT
SW NODE
LOW SIDE
A CH2
A CH2
A CH3
3.90A
3.90A
2.20V