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ADP3050ARZ-3.3-RL

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21
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
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
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.
ADP3050 Data Sheet
Rev. C | Page 4 of 20
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter Rating
IN Voltage
Continuous −0.3 V to +40 V
Peak (<100 ms) −0.3 V to +60 V
BOOST Voltage
Continuous −0.3 V to +45 V
Peak (<100 ms) −0.3 V to +65 V
SD, BIAS Voltage
−0.3 V to IN + 0.3 V
FB Voltage
−0.3 V to +8 V
COMP Voltage −0.3 V to IN + 0.3 V
SWITCH Voltage −0.3 V to IN + 0.3 V
Operating Ambient Temperature Range −40°C to +85°C
Operating Junction Temperature Range −40°C to +125°C
Storage Temperature Range −65°C to +150°C
θ
JA
(4-Layer PCB)
1
60.6°C/W
θ
JA
(4-Layer PCB)
2
87.5°C/W
Lead Temperature (Soldering, 60 sec) 300°C
1
Applied to all models that are not Pb-free.
2
Applied to all Pb-free models.
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
device reliability.
ESD CAUTION
Data Sheet ADP3050
Rev. C | Page 5 of 20
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
SWITCH
1
BOOST
2
BIAS
3
FB
4
IN
8
GND
7
SD
6
COMP
5
ADP3050
TOP VIEW
(Not to Scale)
00125-002
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No. Mnemonic Description
1 SWITCH
Switch Node. This pin is the emitter of the internal NPN power switch. The voltage at this pin switches between
V
IN
and approximately −0.5 V.
2 BOOST
Boost Pin. This pin is used to provide a boosted voltage (higher than V
IN
) for the drive stage of the NPN power
switch. With the higher drive voltage, the power switch can be saturated, greatly reducing the switch power
losses.
3 BIAS
Bias Input Pin. Connect this pin to the regulated output voltage to maximize system efficiency. When this pin is
above 2.7 V, most of the ADP3050 operating current is taken from the output instead of the input supply. Leave
unconnected if not used.
4 FB
Feedback Pin. This feedback pin senses the regulated output voltage. Connect this pin directly to the output
(fixed output versions).
5 COMP
Compensation Node. This pin is used to compensate the regulator with an external resistor and capacitor. This
pin is also used to override the control loop. However, the voltage on this pin should not exceed 2 V, because
the pin is internally clamped to ensure a fast transient response. Use a pull-up resistor if this pin is to be pulled
higher than 2 V.
6
SD
Shutdown Pin. Use this pin to turn the device on and off. If this feature is not needed, tie this pin directly to IN.
7 GND Ground Pin. Connect this pin to local ground plane.
8 IN
Power Input. Connect this pin to the input supply voltage. An input bypass capacitor must be placed close to
this pin to ensure proper regulator operation.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21

ADP3050ARZ-3.3-RL

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Voltage Regulators - Switching Regulators 200kHz 1A Hi-VTG Step-Down
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