ADP3050 Просмотр технического описания (PDF) - Analog Devices
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ADP3050 Datasheet PDF : 20 Pages
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Data Sheet
ADP3050
SPECIFICATIONS
VIN = 10 V, TA = −40°C to +85°C, unless otherwise noted.
Table 1.
Parameter1
FEEDBACK
Feedback Voltage
ADP3050
ADP3050-3.3
ADP3050-5
Line Regulation
Load Regulation
Input Bias Current
ERROR AMPLIFIER
Transconductance2
Voltage Gain2
Output Current
ADP3050
ADP3050-3.3
ADP3050-5
OSCILLATOR
Oscillator Frequency3
Minimum Duty Cycle
Maximum Duty Cycle
SWITCH
Average Output Current Limit4
ADP3050
ADP3050-3.3
ADP3050-5
Peak Switch Current Limit5
Saturation Voltage
Leakage Current
SHUTDOWN
Input Voltage Low
Input Voltage High
SUPPLY
Input Voltage Range6
Minimum BIAS Voltage
Minimum BOOST Voltage
IN Supply Current
Normal Mode
Shutdown Mode
BIAS Supply Current
BOOST Supply Current
Symbol
VFB
Conditions
Over line and temperature
IFB
gm
AVOL
fOSC
DMIN
DMAX
ICL(AVG)
ICL(PEAK)
VIN = 10 V to 30 V, no load
ILOAD = 100 mA to 1 A, ADP3050AR only
ADP3050AR-3.3, ADP3050AR-5
ADP3050AR only
COMP = 1.0 V, FB = 1.1 V to 1.3 V
COMP = 1.0 V, FB = 3.0 V to 3.6 V
COMP = 1.0 V, FB = 4.5 V to 5.5 V
BOOST = 15 V, FB = 1.1 V
BOOST = 15 V, FB = 3.0 V
BOOST = 15 V, FB = 4.5 V
BOOST = 15 V, ILOAD = 1 A
VIN
VBIAS
VBOOST
IQ
IBIAS
IBOOST
BIAS = 5.0 V
SD = 0 V, VIN ≤ 30 V
BIAS = 5.0 V
BOOST = 15 V, ISW = 0.5 A
BOOST = 15 V, ISW = 1.0 A
Min Typ
1.16 1.20
3.20 3.30
4.85 5.00
0.005
−1.0 +0.1
−0.5 +0.1
0.65
1250
300
±115
±120
±135
170 200
10
90
1.0 1.25
1.0 1.25
1.0 1.25
1.5 1.7
0.65
50
2.0
3.6
0.7
15
4.0
18
20
Max Unit
1.24 V
3.40 V
5.15 V
%/V
+1.0 %/A
+0.5 %/A
2
μA
μMho
V/V
μA
μA
μA
240 kHz
%
%
1.5
A
1.5
A
1.5
A
2.1
A
0.95 V
nA
0.4
V
V
30
V
3.0
V
3.0
V
1.5
mA
40
μA
6.0
mA
mA
40
mA
1 All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
2 Transconductance and voltage gain measurements refer to the internal amplifier without the voltage divider. To calculate the transconductance and gain of the fixed
voltage parts, divide the values shown by FB/1.20.
3 The switching frequency is reduced when the feedback pin is lower than 0.8 × FB.
4 See Figure 24 for typical application circuit.
5 Switch current limit is measured with no diode, no inductor, and no output capacitor.
6 Minimum input voltage is not measured directly, but is guaranteed by other tests. The actual minimum input voltage needed to keep the output in regulation
depends on output voltage and load current.
Rev. C | Page 3 of 20
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