ADP2381AREZ-R7 데이터 시트보기 (PDF) - Analog Devices
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ADP2381AREZ-R7 Datasheet PDF : 28 Pages
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Data Sheet
ADP2381
SPECIFICATIONS
VIN = 12 V, TJ = −40°C to +125°C for min/max specifications, and TA = 25°C for typical specifications, unless otherwise noted.
Table 1.
Parameter
PVIN
PVIN Voltage Range
Quiescent Current
Shutdown Current
PVIN Undervoltage Lockout Threshold
FB
FB Regulation Voltage
FB Bias Current
ERROR AMPLIFIER (EA)
Transconductance
EA Source Current
EA Sink Current
INTERNAL REGULATOR (VREG)
VREG Voltage
Dropout Voltage
Regulator Current Limit
SW
High-Side On Resistance1
High-Side Peak Current Limit
Negative Current-Limit Threshold Voltage2
SW Minimum On Time
SW Minimum Off Time
LOW-SIDE DRIVER (LD)
Rising Time2
Falling Time2
Sourcing Resistor
Sinking Resistor
BST
Bootstrap Voltage
OSCILLATOR (RT PIN)
Switching Frequency
Switching Frequency Range
SYNC
Synchronization Range
SYNC Minimum Pulse Width
SYNC Minimum Off Time
SYNC Input High Voltage
SYNC Input Low Voltage
EN/SS
Enable Threshold
Internal Soft Start
SS Pin Pull-Up Current
Symbol Test Conditions/Comments
VPVIN
IQ
No switching
ISHDN
EN/SS = GND
PVIN rising
PVIN falling
VFB
IFB
gm
ISOURCE
ISINK
VVREG
0°C < TJ < 85°C
−40°C < TJ < +125°C
VPVIN = 12 V, IVREG = 50 mA
VPVIN = 12 V, IVREG = 50 mA
VBST − VSW = 5 V
tMIN_ON
tMIN_OFF
tR
tF
CDL = 2.2 nF; see Figure 17
CDL = 2.2 nF; see Figure 20
VBOOT
fSW
fSW
RT pin connected to GND
RT pin open
ROSC = 100 kΩ
ISS_UP
Min Typ Max Unit
4.5
20
V
2
2.8 3.5 mA
80
130 170 µA
4.3 4.5 V
3.7 3.9
V
0.594 0.6
0.591 0.6
0.01
0.606 V
0.609 V
0.1 µA
360 500 620 µS
40
60 80
µA
40
60 80
µA
7.6 8
8.4 V
350
mV
65
100 135 mA
44 70
mΩ
7.7 9.6 11.5 A
20
mV
120 170 ns
200 300 ns
20
ns
10
ns
4
6
Ω
2
3.5 Ω
4.5 5
5.7 V
210 290 360 kHz
400 550 690 kHz
425 500 570 kHz
250
1400 kHz
250
1400 kHz
100
ns
100
ns
1.3
V
0.4 V
0.5 V
1500
Clock cycles
2.6 3.3 4
µA
Rev. 0 | Page 3 of 28
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