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PDF MCP16331 Data sheet ( Hoja de datos )
| Número de pieza | MCP16331 | |
| Descripción | High-Voltage Input Integrated Switch Step-Down Regulator | |
| Fabricantes | Microchip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MCP16331 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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MCP16331
High-Voltage Input Integrated Switch Step-Down Regulator
Features:
• Up to 96% Efficiency
• Input Voltage Range: 4.4V to 50V
• Output Voltage Range: 2.0V to 24V
• 2% Output Voltage Accuracy
• Qualification: AEC-Q100 Rev. G, Grade 1(-40oC
to 125oC)
• Integrated N-Channel Buck Switch: 600 m
• Minimum 500 mA Output Current Over All Input
Voltage Range (See Figure 2-9 for Maximum
Output Current vs. VIN)
- Up to 1.2A Output Current at 3.3V and 5V
VOUT, VIN>12V, SOT-23 package at 25oC
ambient temperature
-
Up to 0.8A Output Current
VIN>18V, SOT-23 package
at
at
1225VoCVOamUTb, ient
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
• Internal Pull-Up on EN
• Cycle-by-Cycle Peak Current Limit
• Undervoltage Lockout (UVLO): 4.1V to Start;
3.6V to Stop
• Overtemperature Protection
• Available Package: 6-Lead SOT-23, 8-Lead 2x3
TDFN
Applications:
• PIC® MCU/dsPIC® DSC Microcontroller Bias
Supply
• 48V, 24V and 12V Industrial Input DC-DC
Conversion
• Set-Top Boxes
• DSL Cable Modems
• Automotive
• AC/DC Adapters
• SLA Battery Powered Devices
• AC-DC Digital Control Power Source
• Power Meters
• Consumer
• Medical and Health Care
• Distributed Power Supplies
2014 Microchip Technology Inc.
General Description:
The MCP16331 is a highly integrated, high-efficiency,
fixed frequency, step-down DC-DC converter in a
popular 6-pin SOT-23 or 8-pin TDFN 2x3 package that
operates from input voltage sources up to 50V.
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 MCP16331 can supply 500 mA of continuous
current while regulating the output voltage from 2.0V to
24V. 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 off, only a few µA of current are consumed from
the input for power shedding and load distribution
applications. This pin is internally pulled up, so the
device will start even if the EN pin is left floating.
Output voltage is set with an external resistor divider.
The MCP16331 is offered in a space saving 6-Lead
SOT-23 and 8-Lead 2x3 TDFN surface mount package.
Package Type
MCP16331
6-Lead SOT-23
BOOST 1
6 SW
GND 2
5 VIN
VFB 3
4 EN
MCP16331
8-Lead 2x3 TDFN*
SW 1
8 VIN
EN 2 EP 7 BOOST
NC 3 9 6 VFB
NC 4
5 GND
* Includes Exposed Thermal Pad (EP); see Table 3-1
DS20005308B-page 1
1 page  
MCP16331
2.0 TYPICAL PERFORMANCE CURVES
Note:
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, VIN = EN = 12V, COUT = CIN = 2 X10 µF, L = 15 µH, VOUT = 3.3V, ILOAD = 100 mA,
TA = +25°C, 6-Lead SOT-23 package.
100
90
80
70 VIN = 12V
60
50
40
30
20
10
0
1
FIGURE 2-1:
IOUT.
VIN = 6V
VIN = 48V
VIN = 24V
10 100 1000
IOUT (mA)
3.3V VOUT Efficiency vs.
100
90
80
70
60
50
40
30
20
10
0
1
FIGURE 2-4:
IOUT.
VIN = 48V
10 100
IOUT (mA)
1000
24V VOUT Efficiency vs.
100
90
80
70
60
50
40
30
20
10
0
1
FIGURE 2-2:
VIN = 12V
VIN = 48V
VIN = 24V
10 100
IOUT (mA)
1000
5V VOUT Efficiency vs. IOUT.
100
90
80 IOUT= 500 mA
70
60
IOUT= 100 mA
50
40
30
IOUT= 10 mA
20
10
0
6 10 14
FIGURE 2-5:
VIN.
18 22 26 30 34 38 42 46 50
VIN (V)
3.3V VOUT Efficiency vs.
100
90
80
70 VIN = 24V
60
50
40
30
20
10
0
1
FIGURE 2-3:
VIN = 48V
10 100
IOUT (mA)
1000
12V VOUT Efficiency vs. IOUT.
100
90
IOUT = 500 mA
80
70
60 IOUT = 100 mA
50
40
30 IOUT = 10 mA
20
10
0
6 10 14 18 22 26 30 34 38 42 46 50
VIN (V)
FIGURE 2-6:
5V VOUT Efficiency vs. VIN.
2014 Microchip Technology Inc.
DS20005308B-page 5
5 Page 
NOTES:
MCP16331
2014 Microchip Technology Inc.
DS20005308B-page 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MCP16331.PDF ] | |
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