ADP3050 Analog Devices, ADP3050 Datasheet - Page 3

• Manufacturer Part Number: ADP3050
• Description: 200 kHz, 1 A Step-Down High-Voltage Switching Regulator
• Manufacturer: Analog Devices

SPECIFICATIONS
V
Table 1.
Parameter
FEEDBACK
ERROR AMPLIFIER
OSCILLATOR
SWITCH
SHUTDOWN
SUPPLY
1
2
3
4
5
6
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.
The switching frequency is reduced when the feedback pin is lower than 0.8 × FB.
See Figure 24 for typical application circuit.
Switch current limit is measured with no diode, no inductor, and no output capacitor.
depends on output voltage and load current.
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
IN
Feedback Voltage
Line Regulation
Load Regulation
Input Bias Current
Transconductance
Voltage Gain
Output Current
Oscillator Frequency
Minimum Duty Cycle
Maximum Duty Cycle
Average Output Current Limit
Peak Switch Current Limit
Saturation Voltage
Leakage Current
Input Voltage Range
Minimum BIAS Voltage
Minimum BOOST Voltage
IN Supply Current
BIAS Supply Current
BOOST Supply Current
ADP3050
ADP3050-3.3
ADP3050-5
ADP3050
ADP3050-3.3
ADP3050-5
ADP3050
ADP3050-3.3
ADP3050-5
Input Voltage Low
Input Voltage High
Normal Mode
Shutdown Mode
= 10 V, T
1
A
= −40°C to +85°C, unless otherwise noted.
2
2
6
3
5
4
Symbol
V
I
g
A
f
D
D
I
I
V
V
V
I
I
I
FB
CL(AVG)
CL(PEAK)
Q
BIAS
BOOST
OSC
FB
m
IN
BIAS
BOOST
VOL
MIN
MAX
Conditions
Over line and temperature
V
I
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, I
BIAS = 5.0 V
SD = 0 V, V
BIAS = 5.0 V
BOOST = 15 V, I
BOOST = 15 V, I
LOAD
IN
Rev. B | Page 3 of 24
= 10 V to 30 V, no load
= 100 mA to 1 A, ADP3050AR only
IN
≤ 30 V
LOAD
SW
SW
= 0.5 A
= 1.0 A
= 1 A
Min
1.16
3.20
4.85
−1.0
−0.5
170
1.0
1.0
1.0
1.5
2.0
3.6
Typ
1.20
3.30
5.00
0.005
+0.1
+0.1
0.65
1250
300
±115
±120
±135
200
10
90
1.25
1.25
1.25
1.7
0.65
50
0.7
15
4.0
18
20
Max
1.24
3.40
5.15
+1.0
+0.5
2
240
1.5
1.5
1.5
2.1
0.95
0.4
30
3.0
3.0
1.5
40
6.0
40
ADP3050
Unit
kHz
V
V
V
%/V
%/A
%/A
μA
μMho
V/V
μA
μA
μA
%
%
A
A
A
A
V
nA
V
V
V
V
V
mA
μA
mA
mA
mA