Datasheet

Data Sheet ADP3050
Rev. C | Page 3 of 20
SPECIFICATIONS
V
IN
= 10 V, T
A
= −40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
1
Symbol Conditions Min Typ Max Unit
FEEDBACK
Feedback Voltage
V
FB
Over line and temperature
ADP3050 1.16 1.20 1.24 V
ADP3050-3.3 3.20 3.30 3.40 V
ADP3050-5 4.85 5.00 5.15 V
Line Regulation V
IN
= 10 V to 30 V, no load 0.005 %/V
Load Regulation
I
LOAD
= 100 mA to 1 A, ADP3050AR only
−1.0
+0.1
+1.0
%/A
ADP3050AR-3.3, ADP3050AR-5 −0.5 +0.1 +0.5 %/A
Input Bias Current I
FB
ADP3050AR only 0.65 2 μA
ERROR AMPLIFIER
Transconductance
2
g
m
1250 μMho
Voltage Gain
2
A
VOL
300 V/V
Output Current
ADP3050 COMP = 1.0 V, FB = 1.1 V to 1.3 V ±115 μA
ADP3050-3.3 COMP = 1.0 V, FB = 3.0 V to 3.6 V ±120 μA
ADP3050-5
COMP = 1.0 V, FB = 4.5 V to 5.5 V
±135
μA
OSCILLATOR
Oscillator Frequency
3
f
OSC
170
200
240
kHz
Minimum Duty Cycle D
MIN
10 %
Maximum Duty Cycle D
MAX
90 %
SWITCH
Average Output Current Limit
4
I
CL(AVG)
ADP3050 BOOST = 15 V, FB = 1.1 V 1.0 1.25 1.5 A
ADP3050-3.3 BOOST = 15 V, FB = 3.0 V 1.0 1.25 1.5 A
ADP3050-5 BOOST = 15 V, FB = 4.5 V 1.0 1.25 1.5 A
Peak Switch Current Limit
5
I
CL(PEAK)
1.5 1.7 2.1 A
Saturation Voltage
BOOST = 15 V, I
LOAD
= 1 A
0.65
0.95
V
Leakage Current 50 nA
SHUTDOWN
Input Voltage Low 0.4 V
Input Voltage High 2.0 V
SUPPLY
Input Voltage Range
6
V
IN
3.6 30 V
Minimum BIAS Voltage V
BIAS
3.0 V
Minimum BOOST Voltage V
BOOST
3.0 V
IN Supply Current I
Q
Normal Mode BIAS = 5.0 V 0.7 1.5 mA
Shutdown Mode
SD = 0 V, V
IN
≤ 30 V
15 40 μA
BIAS Supply Current I
BIAS
BIAS = 5.0 V 4.0 6.0 mA
BOOST Supply Current I
BOOST
BOOST = 15 V, I
SW
= 0.5 A 18 mA
BOOST = 15 V, I
SW
= 1.0 A 20 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.