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744325550 데이터시트(PDF) 3 Page - Analog Devices

부품명 744325550
상세설명  20 V, 4 A, Synchronous, Step-Down DC-to-DC Regulator
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Data Sheet
ADP2384
Rev. 0 | Page 3 of 24
SPECIFICATIONS
VPVIN = 12 V, TJ = −40°C to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted.
Table 1.
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
PVIN
PVIN Voltage Range
VPVIN
4.5
20
V
Quiescent Current
IQ
No switching
2.1
2.9
3.6
mA
Shutdown Current
ISHDN
EN = GND
45
80
120
µA
PVIN Undervoltage Lockout Threshold
UVLO
PVIN rising
4.3
4.5
V
PVIN falling
3.5
3.8
V
FB
FB Regulation Voltage
VFB
0°C < TJ < 85°C
0.594
0.6
0.606
V
−40°C < TJ < 125°C
0.591
0.6
0.609
V
FB Bias Current
IFB
0.01
0.1
µA
ERROR AMPLIFIER (EA)
Transconductance
gm
340
470
600
µS
EA Source Current
ISOURCE
40
60
80
µA
EA Sink Current
ISINK
40
60
80
µA
INTERNAL REGULATOR (VREG)
VREG Voltage
VVREG
VPVIN = 12 V, IVREG = 50 mA
7.6
8
8.4
V
Dropout Voltage
VPVIN = 12 V, IVREG = 50 mA
340
mV
Regulator Current Limit
65
100
135
mA
SW
High-Side On Resistance1
VBST − VSW = 5 V
44
70
mΩ
Low-Side On Resistance1
VVREG = 8 V
11.6
20
mΩ
High-Side Peak Current Limit
4.8
6.1
7.4
A
Low-Side Negative Current-Limit
Threshold Voltage2
20
mV
SW Minimum On Time
tMIN_ON
125
168
ns
SW Minimum Off Time
tMIN_OFF
200
260
ns
BST
Bootstrap Voltage
VBOOT
4.5
5
5.5
V
OSCILLATOR (RT PIN)
Switching Frequency
fSW
RT = 100 kΩ
530
600
670
kHz
Switching Frequency Range
fSW
200
1400
kHz
SYNC
Synchronization Range
200
1400
kHz
SYNC Minimum Pulse Width
100
ns
SYNC Minimum Off Time
100
ns
SYNC Input High Voltage
1.3
V
SYNC Input Low Voltage
0.4
V
SS
Internal Soft Start
1600
Clock cycles
SS Pin Pull-Up Current
ISS_UP
2.5
3.2
3.9
µA
PGOOD
Power-Good Range
FB Rising Threshold
PGOOD from low to high
95
%
FB Rising Hysteresis
PGOOD from high to low
5
%
FB Falling Threshold
PGOOD from low to high
105
%
FB Falling Hysteresis
PGOOD from high to low
11.7
%


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