ADP1871ACPZ-0.3-R7 Analog Devices Inc, ADP1871ACPZ-0.3-R7 Datasheet - Page 16

• Manufacturer Part Number: ADP1871ACPZ-0.3-R7
• Description: 300kHz, Light Load Eff Enabled
• Manufacturer: Analog Devices Inc

Specifications of ADP1871ACPZ-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: ADP1871ACPZ-0.3-R7; ADP1871ACPZ-0.3-R7TR

ADP1870/ADP1871
Figure 60. Upper-Side Driver Rising and Lower-Side Falling Edge Waveforms
M
M
1
4
3
2
4
3
2
4
3
2
CH1 1V
CH3 10V
CH3 5V
MATH 2V 40ns
CH3 5V
MATH 2V 40ns
OUTPUT VOLTAGE
LOW SIDE
SW NODE
INDUCTOR CURRENT
LOW SIDE
HS MINUS
SW
LOW SIDE
SW NODE
HS MINUS
SW
Figure 59. Output Drivers and SW Node Waveforms
22ns (
Figure 58. Soft Start and RES Detect Waveform
Q
(C
TOTAL
B
W
B
t
IN
pdh
W
= 4.3 nF (Upper-/Lower-Side MOSFET),
= 27 nC (V
DRVH
CH2 5A Ω
CH4 2V
CH2 5V
CH4 2V
CH2 5V
CH4 2V
)
GS
T
= 4.4 V (Q1), V
16ns (
A
= 25°C
M1ms
M40ns
M40ns
T
T
T
t
f
,DRVL
63.2%
29.0%
29.0%
25ns (
)
HIGH SIDE
GS
t
r
= 5 V (Q3))
,DRVH
A CH1
HIGH SIDE
SW NODE
A CH2
A CH2
)
T
A
= 25°C
4.20V
4.20V
1.56V
Rev. A | Page 16 of 44
Figure 61. Upper-Side Driver Falling and Lower-Side Rising Edge Waveforms
M
4
3
2
570
550
530
510
490
470
450
430
680
630
580
530
480
430
380
330
CH3 5V
MATH 2V 20ns
–40
T
2.7
A
HIGH SIDE
HS MINUS
SW
Figure 62. Transconductance (G
= 25°C
Q
(C
TOTAL
3.0
–20
Figure 63. Transconductance (G
18ns (
IN
= 4.3 nF (Upper-/Lower-Side MOSFET),
= 27 nC (V
3.3
t
r
,DRVL
CH2 5V
CH4 2V
0
3.6
)
TEMPERATURE (°C)
20
GS
= 4.4 V (Q1), V
11ns (
3.9
V
24ns (
REG
40
M20ns
T
t
f
,DRVH
4.2
39.2%
(V)
t
pdh
m
60
) vs. Temperature
)
,DRVL
4.5
GS
m
= 5 V (Q3))
) vs. V
)
80
A CH2
LOW SIDE
4.8
SW NODE
REG
V
V
V
REG
REG
REG
100
5.1
4.20V
+125°C
+25°C
–40°C
= 5.5V
= 3.6V
= 2.7V
120
5.4