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ADP2442ACPZ-R7 Datasheet(PDF) 3 Page - Analog Devices

No. de pieza ADP2442ACPZ-R7
Descripción Electrónicos  36 V,1 A, Synchronous, Step-Down, DC-to-DC Regulator with External Clock Synchronization
PDF  36 Pages
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

ADP2442ACPZ-R7 Datasheet(HTML) 3 Page - Analog Devices

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Data Sheet
ADP2442
Rev. B | Page 3 of 36
SPECIFICATIONS
VIN = 4.5 V to 36 V, TJ = −40°C to +125°C, unless otherwise noted.
Table 1.
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
POWER SUPPLY
Input Voltage Range
VIN
4.5
36
V
Supply Current
IVIN
VEN = 1.5 V not switching
1.7
2
mA
Shutdown Current
ISHDN
VEN = AGND
10
15
μA
UVLO
Threshold
VUVLO
VIN falling
3.8
4
4.2
V
Hysteresis
200
mV
INTERNAL REGULATOR
Regulator Output Voltage
VCC
VIN = 5 V to 36 V
5
5.5
V
OUTPUT
Output Voltage Range
VOUT
0.6
0.9 × VIN
V
Maximum Output Current
IOUT
1
A
Feedback Regulation Voltage
VFB
TJ = −40°C to +85°C
0.594
0.6
0.606
V
TJ = −40°C to +125°C
0.591
0.6
0.609
V
Line Regulation
0.005
%/V
Load Regulation
0.05
%/A
ERROR AMPLIFIER
Feedback Bias Current
IFB_BIAS
VFB = 0.6 V
50
200
nA
Transconductance
gm
ICOMP = ±20 μA
200
250
300
μA/V
Open-Loop Voltage Gain1
AVOL
65
dB
MOSFETS
High-Side Switch On Resistance2
RDS_H(ON)
BST − SW = 5 V
170
270
mΩ
Low-Side Switch On Resistance2
RDS_L(ON)
VCC = 5 V
120
180
mΩ
Leakage Current
ILKG
VEN = AGND
1
25
μA
Minimum On Time3
tON_MIN
All switching frequencies
50
65
ns
Minimum Off Time4
tOFF_MIN
165
175
ns
CURRENT SENSE
Current Sense Amplifier Gain
GCS
1.6
2
2.4
A/V
Hiccup Time
fSW = 300 kHz to1 MHz
6
ms
Number of Cumulative Current-Limit Cycles
to Enter Hiccup Mode
8
Events
Peak Current Limit
ICL
1.4
1.6
1.8
A
FREQUENCY
Switching Frequency Range
fSW
300
1000
kHz
Frequency Set Accuracy
FREQ pin = 308 kΩ
270
300
330
kHz
FREQ pin = 92.5 kΩ
900
1000
1100
kHz
Frequency Synchronization Range
300
1000
kHz
SOFT START
Soft Start Time
tSS
2
ms
PRECISION ENABLE
Input Threshold
VEN(RISING)
1.15
1.20
1.25
V
Hysteresis
VEN(HYST)
100
mV
Leakage Current
IIEN_LEAK
VIN = VEN
0.1
1
μA
Thermal Shutdown
Rising
TSD
150
°C
Hysteresis
TSD(HYST)
25
°C



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