MCP16301/H
High-Voltage Input Integrated Switch Step-Down Regulator
Features
• Up to 96% Typical Efficiency
• Input Voltage Range:
- 4.0V to 30V (MCP16301)
- 4.7V to 36V (MCP16301H)
• Output Voltage Range: 2.0V to 15V
• 2% Output Voltage Accuracy
• Qualification: AEC-Q100 Rev G, Grade 1
(-40°C to +125°C)
• Integrated N-Channel Buck Switch: 460 m
• Minimum 600 mA Output Current Over All Input
Voltage Range (See
Figure 2-6
for Maximum
Output Current vs. V
IN
):
- up to 1A output current at 3.3V, 5V and 12V
V
OUT
, SOT-23 package at +25°C ambient
temperature
• 500 kHz Fixed Frequency
• Adjustable Output Voltage
• Low Device Shutdown Current
• Peak Current Mode Control
• Internal Compensation
• Stable with Ceramic Capacitors
• Internal Soft-Start
• Cycle-by-Cycle Peak Current Limit
• Undervoltage Lockout (UVLO): 3.5V
• Overtemperature Protection
• Available Package: SOT-23-6
General Description
The MCP16301/H devices are highly integrated,
high-efficiency, fixed-frequency, step-down DC-DC
converters in a popular 6-pin SOT-23 package that
operates from input voltage sources up to 36V.
Integrated features include a high-side switch,
fixed-frequency peak current mode control, internal
compensation, peak current limit and overtemperature
protection. Minimal external components are
necessary to develop a complete step-down DC-DC
converter power supply.
High converter efficiency is achieved by integrating the
current-limited, low-resistance, high-speed N-Channel
MOSFET and associated drive circuitry. High
switching frequency minimizes the size of external
filtering components, resulting in a small solution size.
The MCP16301/H devices can supply 600 mA of
continuous current while regulating the output voltage
from 2.0V to 15V. An integrated, high-performance
peak current mode architecture keeps the output
voltage tightly regulated, even during input voltage
steps and output current transient conditions that are
common in power systems.
The EN input is used to turn the device on and off.
While turned off, only a few micro amps of current are
consumed from the input for power shedding and load
distribution applications.
Output voltage is set with an external resistor divider.
The MCP16301/H devices are offered in a
space-saving SOT-23-6 surface mount package.
Applications
• PIC
®
Microcontroller and dsPIC
®
Digital Signal
Controller Bias Supply
• 24V Industrial Input DC-DC Conversion
• Set-Top Boxes
• DSL Cable Modems
• Automotive
• Wall Cube Regulation
• SLA Battery-Powered Devices
• AC-DC Digital Control Power Source
• Power Meters
• D
2
Package Linear Regulator Replacement
- See
Figure 5-2
• Consumer
• Medical and Health Care
• Distributed Power Supplies
Package Type
MCP16301/H
6-Lead SOT-23
BOOST 1
GND 2
V
FB
3
6
5
4
SW
V
IN
EN
2011-2015 Microchip Technology Inc.
DS20005004D-page 1
MCP16301/H
Typical Applications
1N4148
C
BOOST
L
1
100 nF 15 µH
SW
40V
Schottky
Diode
V
OUT
3.3V @ 600 mA
C
OUT
2 x 10 µF
31.6 k
V
IN
4.7V to 36V
C
IN
10 µF
Boost
V
IN
EN
V
FB
GND
10 k
1N4148
C
BOOST
L
1
100 nF 22 µH
SW
40V
Schottky
Diode
V
OUT
5.0V @ 600 mA
C
OUT
2 x 10 µF
52.3 k
V
IN
6.0V to 36V
C
IN
10 µF
Boost
V
IN
EN
V
FB
GND
10 k
100
90
80
V
OUT
= 5.0V
Efficiency (%)
70
60
50
40
30
20
10
0
10
V
OUT
= 3.3V
V
IN
= 12V
100
1000
I
OUT
(mA)
DS20005004D-page 2
2011-2015 Microchip Technology Inc.
MCP16301/H
1.0
ELECTRICAL
CHARACTERISTICS
† Notice:
Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of
the device at those or any other conditions above those
indicated in the operational sections of this
specification is not intended. Exposure to maximum
rating conditions for extended periods may affect
device reliability.
Absolute Maximum Ratings †
V
IN,
SW ............................................................... -0.5V to 40V
BOOST – GND ................................................... -0.5V to 46V
BOOST – SW Voltage........................................ -0.5V to 6.0V
V
FB
Voltage ........................................................ -0.5V to 6.0V
EN Voltage ............................................. -0.5V to (V
IN
+ 0.3V)
Output Short-Circuit Current ................................. Continuous
Power Dissipation ....................................... Internally Limited
Storage Temperature ................................... -65
°
C to +150
°
C
Ambient Temperature with Power Applied ... -40
°
C to +125
°
C
Operating Junction Temperature.................. -40
°
C to +150
°
C
ESD Protection On All Pins:
HBM ................................................................. 3 kV
MM ..................................................................200V
DC CHARACTERISTICS
Electrical Characteristics:
Unless otherwise indicated, T
A
= +25°C, V
IN
= V
EN
= 12V, V
BOOST
– V
SW
= 3.3V,
V
OUT
= 3.3V, I
OUT
= 100 mA, L = 15 µH, C
OUT
= C
IN
= 2 x 10 µF X7R ceramic capacitors.
Boldface
specifications apply over the T
A
range of -40
o
C to +125
o
C.
Parameters
Input Voltage
Feedback Voltage
Output Voltage Adjust Range
Feedback Voltage
Line Regulation
Feedback Input Bias Current
Undervoltage Lockout Start
Undervoltage Lockout Stop
Undervoltage Lockout
Hysteresis
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
NMOS Switch On Resistance
NMOS Switch Current Limit
Quiescent Current
Quiescent Current - Shutdown
Maximum Output Current
EN Input Logic High
EN Input Logic Low
EN Input Leakage Current
Note 1:
Sym.
V
IN
V
FB
V
OUT
V
FB
/V
FB
)/V
IN
I
FB
UVLO
START
UVLO
STOP
UVLO
HYS
f
SW
DC
MAX
DC
MIN
R
DS(ON)
I
N(MAX)
I
Q
I
Q
I
OUT
V
IH
V
IL
I
ENLK
Min.
4
4.7
0.784
2.0
—
-250
—
—
2.4
—
425
90
—
—
—
—
—
600
1.4
—
—
Typ.
—
—
0.800
—
0.01
±10
3.5
3.5
3.0
0.5
500
95
1
0.46
1.3
2
7
—
—
—
0.05
Max.
30
36
0.816
15.0
0.1
+250
4.0
4.7
—
—
550
—
—
—
—
7.5
10
—
—
0.4
1.0
Units
V
V
V
V
%/V
nA
V
V
V
V
kHz
%
%
A
mA
µA
mA
V
V
µA
V
EN
= 12V
V
BOOST
– V
SW
= 3.3V
V
BOOST
– V
SW
= 3.3V
V
BOOST
= 3.3V;
Note 3
V
OUT
= EN = 0V
Note 1
I
OUT
= 200 mA
V
IN
= 5V; V
FB
= 0.7V;
I
OUT
= 100 mA
V
IN
Rising (MCP16301)
V
IN
Rising (MCP16301H)
V
IN
Falling
Note 2
V
IN
= 12V to 30V
Conditions
Note 1
(MCP16301)
Note 1
(MCP16301H)
2:
3:
The input voltage should be > output voltage + headroom voltage; higher load currents increase the input
voltage necessary for regulation. See characterization graphs for typical input to output operating voltage
range and UVLO
START
and UVLO
STOP
limits.
For V
IN
< V
OUT
, V
OUT
will not remain in regulation.
V
BOOST
supply is derived from V
OUT
.
2011-2015 Microchip Technology Inc.
DS20005004D-page 3
MCP16301/H
DC CHARACTERISTICS (CONTINUED)
Electrical Characteristics:
Unless otherwise indicated, T
A
= +25°C, V
IN
= V
EN
= 12V, V
BOOST
– V
SW
= 3.3V,
V
OUT
= 3.3V, I
OUT
= 100 mA, L = 15 µH, C
OUT
= C
IN
= 2 x 10 µF X7R ceramic capacitors.
Boldface
specifications apply over the T
A
range of -40
o
C to +125
o
C.
Parameters
Soft-Start Time
Thermal Shutdown Die
Temperature
Die Temperature Hysteresis
Note 1:
Sym.
t
SS
T
SD
T
SDHYS
Min.
—
—
—
Typ.
300
150
30
Max.
—
—
—
Units
µS
C
C
Conditions
EN Low to High,
90% of V
OUT
2:
3:
The input voltage should be > output voltage + headroom voltage; higher load currents increase the input
voltage necessary for regulation. See characterization graphs for typical input to output operating voltage
range and UVLO
START
and UVLO
STOP
limits.
For V
IN
< V
OUT
, V
OUT
will not remain in regulation.
V
BOOST
supply is derived from V
OUT
.
TEMPERATURE SPECIFICATIONS
Electrical Specifications:
Unless otherwise indicated, T
A
= +25°C, V
IN
= V
EN
= 12V, V
BOOST
– V
SW
= 3.3V,
V
OUT
= 3.3V
Parameters
Temperature Ranges
Operating Junction Temperature Range
Storage Temperature Range
Maximum Junction Temperature
Package Thermal Resistances
Thermal Resistance, 6L-SOT-23
JA
—
190.5
—
°C/W
EIA/JESD51-3 Standard
T
J
T
A
T
J
-40
-65
—
—
—
—
+125
+150
+150
°C
°C
°C
Transient
Steady State
Sym.
Min.
Typ.
Max.
Units
Conditions
DS20005004D-page 4
2011-2015 Microchip Technology Inc.
MCP16301/H
2.0
Note:
TYPICAL PERFORMANCE CURVES
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note:
Unless otherwise indicated, V
IN
= EN = 12V, C
OUT
= C
IN
= 2 X 10 µF, L = 15 µH, V
OUT
= 3.3V, I
LOAD
= 200 mA,
T
A
= +25°C
.
90
V
IN
= 6V
100
90
Efficiency (%)
V
IN
=
12V
V
IN
= 16V
V
IN
= 30V
V
IN
= 24V
V
OUT
= 12.0V
80
Efficiency (%)
70
60
50
40
30
0
100
200
300
400
I
OUT
(mA)
500
600
80
70
60
50
40
30
0
100
V
IN
=
30V
V
OUT
= 2.0V
200
300
400
I
OUT
(mA)
500
600
FIGURE 2-1:
I
OUT
.
100
90
Efficiency (%)
80
70
V
IN
= 6V
2.0V V
OUT
Efficiency vs.
FIGURE 2-4:
I
OUT
.
100
90
Efficiency (%)
80
70
60
50
40
30
12V V
OUT
Efficiency vs.
V
IN
= 16V
V
IN
= 30V
V
IN
= 24V
V
IN
= 12V
V
IN
= 30V
V
OUT
= 3.3V
60
50
40
30
0
100
200
V
OUT
= 15.0V
300
400
I
OUT
(mA)
500
600
0
100
200
300
400
I
OUT
(mA)
500
600
FIGURE 2-2:
I
OUT
.
100
90
Efficiency (%)
80
70
60
50
40
30
0
100
V
IN
= 6V
3.3V V
OUT
Efficiency vs.
FIGURE 2-5:
I
OUT
.
1400
V
OUT
= 3.3V
15V V
OUT
Efficiency vs.
1200
V
IN
= 12V
V
IN
= 30V
1000
I
OUT
(mA)
V
OUT
= 5V
V
OUT
= 12V
800
600
400
200
0
V
OUT
= 5.0V
200
300
400
I
OUT
(mA)
500
600
6
12
18
V
IN
(V)
24
30
36
FIGURE 2-3:
I
OUT
.
5.0V V
OUT
Efficiency vs.
FIGURE 2-6:
vs. V
IN
.
Maximum Output Current
2011-2015 Microchip Technology Inc.
DS20005004D-page 5
京公网安备 11010802033920号
EEWORLD
