ADP1870ACPZ-0.3-R7 Analog Devices Inc, ADP1870ACPZ-0.3-R7 Datasheet - Page 14

• Manufacturer Part Number: ADP1870ACPZ-0.3-R7
• Description: 300kHz, Light Load Eff Enabled
• Manufacturer: Analog Devices Inc

Specifications of ADP1870ACPZ-0.3-R7

• Frequency - Max: 300kHz
• Pwm Type: Current Mode
• Number Of Outputs: 1
• Duty Cycle: 84%
• Voltage - Supply: 2.95 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-WFDFN, CSP Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADP1870ACPZ-0.3-R7; ADP1870ACPZ-0.3-R7TR

ADP1870/ADP1871
Figure 48. Positive Step During Heavy Load Transient Behavior—PSM Enabled,
4
1
3
2
1
3
4
2
1
3
4
CH1 5A Ω
CH3 10V
CH1 10A Ω
CH3 20V
CH1 10A Ω
CH3 20V
12A POSITIVE STEP
Figure 47. Load Transient Step—PSM Enabled, 12 A
12 A, V
Figure 46. CCM Operation at Heavy Load, 12 A
LOW SIDE
OUT
(See Figure 94 for Application Circuit)
(See Figure 94 Application Circuit)
CH4 100mV
CH2 200mV
CH4 5V
= 1.8 V (See Figure 94 Application Circuit)
CH2 200mV
CH4 5V
B
B
B
W
W
W
M400ns
M20µs
T
SW NODE
T
M2ms
T
OUTPUT VOLTAGE
30.6%
30.6%
12A STEP
75.6%
SW NODE
OUTPUT VOLTAGE
INDUCTOR CURRENT
OUTPUT VOLTAGE
A CH1
A CH1
A CH3
SW NODE
LOW SIDE
2.20V
3.40A
3.40A
Rev. A | Page 14 of 44
Figure 51. Positive Step During Heavy Load Transient Behavior—Forced PWM
Figure 49. Negative Step During Heavy Load Transient Behavior—PSM Enabled,
at Light Load, 12 A, V
Figure 50. Load Transient Step—Forced PWM at Light Load, 12 A
2
1
3
4
4
1
2
3
4
1
2
3
CH1 10A Ω
CH3 20V
CH1 10A Ω
CH3 20V
CH1 10A Ω
CH3 20V
12A POSITIVE STEP
OUTPUT VOLTAGE
SW NODE
12 A (See Figure 94 Application Circuit)
(See Figure 94 Application Circuit)
CH2 200mV
CH4 5V
CH2 5V
CH4 200mV
CH2 5V
CH4 200mV
OUTPUT VOLTAGE
OUT
12A STEP
LOW SIDE
= 1.8 V (See Figure 94 Application Circuit)
B
B
B
W
W
W
M20µs
M20µs
T
T
M2ms
T
48.2%
43.8%
OUTPUT VOLTAGE
12A NEGATIVE STEP
15.6%
LOW SIDE
SW NODE
A CH1
A CH1
A CH1
LOW SIDE
SW NODE
3.40A
6.20A
6.20A