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ADP2105 Datasheet(PDF) 3 Page - Analog Devices

No. de Pieza. ADP2105
Descripción  1 Amp/1.5 Amp/2 Amp Synchronous, Step-Down DC-to-DC Converters
Descarga  32 Pages
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Fabricante  AD [Analog Devices]
Página de inicio  http://www.analog.com
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ADP2105 Datasheet(HTML) 3 Page - Analog Devices

 
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ADP2105/ADP2106/ADP2107
Rev. 0 | Page 3 of 32
SPECIFICATIONS
VIN = 3.6 V @ TA = 25°C, unless otherwise noted.1 Bold values indicate −40°C ≤ TJ ≤ +125°C.
Table 1.
Parameter
Conditions
Min
Typ
Max
Unit
INPUT CHARACTERISTICS
Input Voltage Range
2.7
5.5
V
Undervoltage Lockout Threshold
VIN rising
2.2
2.4
2.6
V
VIN falling
2.0
2.2
2.5
V
Undervoltage Lockout Hysteresis2
200
mV
OUTPUT CHARACTERISTICS
Output Regulation Voltage
ADP210x-3.3, load = 10 mA
3.267
3.3
3.333
V
ADP210x-3.3, VIN = 3.5 V to 5.5 V, no load to full load
3.201
3.3
3.399
V
ADP210x-1.8, load = 10 mA
1.782
1.8
1.818
V
ADP210x-1.8, VIN = 2.7 V to 5.5 V, no load to full load
1.746
1.8
1.854
V
ADP210x-1.5, load = 10 mA
1.485
1.5
1.515
V
ADP210x-1.5, VIN = 2.7 V to 5.5 V, no load to full load
1.455
1.5
1.545
V
ADP210x-1.2, load = 10 mA
1.188
1.2
1.212
V
ADP210x-1.2, VIN = 2.7 V to 5.5 V, no load to full load
1.164
1.2
1.236
V
Load Regulation
ADP2105
0.4
%/A
ADP2106
0.5
%/A
ADP2107
0.6
%/A
Line Regulation3
Measured in servo loop
0.1
0.3
%/V
Output Voltage Range
ADP210x-ADJ
0.8
VIN
V
FEEDBACK CHARACTERISTICS
ADP210x-1.2
3
6
μA
ADP210x-1.5
4
8
μA
ADP210x-1.8
5
10
μA
OUT_SENSE Bias Current
ADP210x-3.3
10
20
μA
FB Regulation Voltage
ADP210x-ADJ
0.784
0.8
0.816
V
FB Bias Current
ADP210x-ADJ
−0.1
+0.1
μA
INPUT CURRENT CHARACTERISTICS
IN Operating Current
ADP210x-ADJ, VFB = 0.9 V
20
30
μA
ADP210x-xx, output voltage 10% above regulation voltage
20
30
μA
IN Shutdown Current
VEN = 0 V
0.1
15
μA
LX (SWITCH NODE) CHARACTERISTICS
LX On Resistance4
P-channel switch
100
165
m
Ω
N-channel synchronous rectifier
90
140
m
Ω
LX Leakage Current4
VIN = 5.5 V, VLX = 0 V, 5.5 V
0.1
15
μA
LX Peak Current Limit4
P-channel switch, ADP2107
2.6
2.9
3.3
A
P-channel switch, ADP2106
2.0
2.25
2.6
A
P-channel switch, ADP2105
1.3
1.5
1.8
A
LX Minimum On-Time4
In PWM mode of operation, VIN = 5.5 V
100
ns
ENABLE CHARACTERISTICS
EN Input High Voltage
VIN = 2.7 V to 5.5 V
2
V
EN Input Low Voltage
VIN = 2.7 V to 5.5 V
0.4
V
EN Input Leakage Current
VIN = 5.5 V, VEN = 0 V, 5.5 V
−1
−0.1
+1
μA
OSCILLATOR FREQUENCY
VIN = 2.7 V to 5.5 V
1
1.2
1.4
MHz
SOFT START PERIOD
CSS = 1 nF
750
1000
1200
μs


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