ADP1873ARMZ-0.3-R7 Analog Devices Inc, ADP1873ARMZ-0.3-R7 Datasheet - Page 15

• 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 52. Output Short-Circuit Behavior Leading to Hiccup Mode
1
2
4
3
1
2
3
4
1
2
4
3
Figure 54. Start-Up Behavior at Heavy Load, 18 A, 300 kHz
CH1 2V
CH3 10V
CH1 5V
CH3 10V
CH1 2V
CH3 10V
INDUCTOR CURRENT
OUTPUT VOLTAGE
OUTPUT VOLTAGE
Figure 53. Magnified Waveform During Hiccup Mode
SW NODE
LOW SIDE
LOW SIDE
SW NODE
B
B
B
W
W
W
(See Figure 91 Application Circuit)
CH2 5A Ω
CH4 5V
CH2 10A Ω
CH4 5V
CH2 5A Ω
CH4 5V
M4ms
M10µs
M2ms
T
T
T
49.4%
36.2%
32.8%
INDUCTOR CURRENT
INDUCTOR CURRENT
OUTPUT VOLTAGE
LOW SIDE
SW NODE
A CH1
A CH1
A CH2
920mV
720mV
8.20A
Rev. A | Page 15 of 40
Figure 56. Output Voltage Ripple Waveform During PSM Operation
1
2
4
3
1
2
3
4
1
4
3
2
CH1 2V
CH3 10V
CH1 50mV
CH3 10V
CH1 1V
CH3 10V
OUTPUT VOLTAGE
LOW SIDE
SW NODE
INDUCTOR CURRENT
Figure 55. Power-Down Waveform During Heavy Load
Figure 57. Soft Start and RES Detect Waveform
B
B
W
B
W
B
W
W
B
W
CH2 5A Ω
CH4 5V
CH2 5A Ω
CH4 5V
CH2 5A Ω
CH4 2V
INDUCTOR CURRENT
OUTPUT VOLTAGE
at Light Load, 2 A
LOW SIDE
SW NODE
OUTPUT VOLTAGE
INDUCTOR CURRENT
LOW SIDE
SW NODE
M4ms
M2µs
M1ms
T
T
T
ADP1872/ADP1873
41.6%
35.8%
63.2%
A CH1
A CH2
A CH1
720mV
3.90A
1.56V