Changes to Figure 27 ...................................................................... 20
Changes to Ordering Guide .......................................................... 23
Rev. C | Page 2 of 20
Data Sheet
SPECIFICATIONS
V
IN
= 10 V, T
A
= −40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
1
FEEDBACK
Feedback Voltage
ADP3050
ADP3050-3.3
ADP3050-5
Line Regulation
Load Regulation
Input Bias Current
ERROR AMPLIFIER
Transconductance
2
Voltage Gain
2
Output Current
ADP3050
ADP3050-3.3
ADP3050-5
OSCILLATOR
Oscillator Frequency
3
Minimum Duty Cycle
Maximum Duty Cycle
SWITCH
Average Output Current Limit
4
ADP3050
ADP3050-3.3
ADP3050-5
Peak Switch Current Limit
5
Saturation Voltage
Leakage Current
SHUTDOWN
Input Voltage Low
Input Voltage High
SUPPLY
Input Voltage Range
6
Minimum BIAS Voltage
Minimum BOOST Voltage
IN Supply Current
Normal Mode
Shutdown Mode
BIAS Supply Current
BOOST Supply Current
1
2
ADP3050
Symbol
V
FB
Conditions
Over line and temperature
Min
Typ
Max
Unit
1.16
3.20
4.85
V
IN
= 10 V to 30 V, no load
I
LOAD
= 100 mA to 1 A, ADP3050AR only
ADP3050AR-3.3, ADP3050AR-5
ADP3050AR only
−1.0
−0.5
I
FB
g
m
A
VOL
1.20
3.30
5.00
0.005
+0.1
+0.1
0.65
1250
300
1.24
3.40
5.15
+1.0
+0.5
2
V
V
V
%/V
%/A
%/A
μA
μMho
V/V
μA
μA
μA
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
f
OSC
D
MIN
D
MAX
I
CL(AVG)
BOOST = 15 V, FB = 1.1 V
BOOST = 15 V, FB = 3.0 V
BOOST = 15 V, FB = 4.5 V
I
CL(PEAK)
BOOST = 15 V, I
LOAD
= 1 A
1.0
1.0
1.0
1.5
170
±115
±120
±135
200
10
90
240
kHz
%
%
1.25
1.25
1.25
1.7
0.65
50
1.5
1.5
1.5
2.1
0.95
A
A
A
A
V
nA
V
V
V
V
V
mA
μA
mA
mA
mA
0.4
2.0
V
IN
V
BIAS
V
BOOST
I
Q
BIAS = 5.0 V
SD = 0 V, V
IN
≤ 30 V
BIAS = 5.0 V
BOOST = 15 V, I
SW
= 0.5 A
BOOST = 15 V, I
SW
= 1.0 A
3.6
30
3.0
3.0
0.7
15
4.0
18
20
1.5
40
6.0
40
I
BIAS
I
BOOST
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
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
ADP3050
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
IN Voltage
Continuous
Peak (<100 ms)
BOOST Voltage
Continuous
Peak (<100 ms)
SD, BIAS Voltage
FB Voltage
COMP Voltage
SWITCH Voltage
Operating Ambient Temperature Range
Operating Junction Temperature Range
Storage Temperature Range
θ
JA
(4-Layer PCB)
1
θ
JA
(4-Layer PCB)
2
Lead Temperature (Soldering, 60 sec)
1
2
Data Sheet
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
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