900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP1665 Datasheet

High-Voltage 3.6A Integrated Switch PFM/PWM Boost Regulator

No Preview Available !

MCP1665
High-Voltage 3.6A Integrated Switch PFM/PWM Boost Regulator
Features
• 36V, 100 mIntegrated Switch
• Up to 92% Efficiency
• Higher Current Compared to the Previous
MCP166x Switchers Family
• Output Voltage Range: Up to 32V
• 3.6A Typical Peak Input Current Limit:
- IOUT > 1 A at 5.0V VIN, 12V VOUT
- IOUT > 700 mA at 3.3V VIN, 12V VOUT
- IOUT > 400 mA at 4.2V VIN, 24V VOUT
• Input Voltage Range: 2.9V to 5V
• Input Undervoltage Lockout (UVLO):
- UVLO at VIN Rising: 2.9V, typical
- UVLO at VIN Falling: 2.7V, typical
• No Load Input Current: 250 µA Typically for
Pulse-Frequency Modulation (PFM), 500 µA
Typically for Pulse-Width Modulation (PWM)
• Shutdown Mode with 0.4 µA Typical Quiescent
Current
• Automatically PFM/PWM or Selected by the
MODE Pin, for High Efficiency
• 500 kHz PWM Operation with Skipping Mode
Operation Selectable by Dedicated MODE Pin
• Feedback Voltage Reference: VFB = 1.2V
• Cycle-by-Cycle Current Limiting
• Internal Compensation
• Inrush Current Limiting and Internal Soft Start
• Output Overvoltage Protection (OVP) and Open-
Load Protection (OLP) for Constant Current
Configuration
• Thermal Shutdown
• Easily Configurable for Single-ended Primary-
inductor Converter (SEPIC), Cuk or Flyback
Topologies
• Available Package: 10-Lead 2x2 mm VQFN
Applications
• Three-Cell Alkaline, Lithium and NiMH/NiCd
Portable Products
• Single-Cell Li-Ion to 5V, 12V or 24V Converters
• LCD Bias Supply for Portable Applications
• Camera Phone Flash
• Flashlight
• Battery-Powered LEDs
• Lighting Applications
• Portable Medical Equipment
• Hand-Held Instruments
General Description
The MCP1665 device is a compact, high-efficiency,
fixed-frequency, nonsynchronous step-up DC-DC
converter that integrates a 36V, 100 mNMOS switch.
It provides a space-efficient high-voltage step-up
power supply solution for applications powered by
either three-cell alkaline, Ultimate Lithium, NiCd, NiMH,
one-cell Li-Ion or Li-Polymer batteries.
The integrated switch is protected by the typical 3.6A
cycle-by-cycle inductor peak current limit operation.
There is an output overvoltage protection and an open-
load protection that turn off switching so that if the
feedback resistors are accidentally disconnected, the
feedback pin is short-circuited to GND or the output is
exposed to excessive voltage.
Soft Start circuit allows the regulator to start-up without
high inrush current or output voltage overshoot from a
low-voltage input. The device features an UVLO which
avoids start-up and operation with low inputs or
discharged batteries for cell-powered applications. A
PFM switching mode (used for power saving) is
implemented and it is selectable by the dedicated
MODE pin.
For standby applications (EN = GND), the device stops
switching, enters Shutdown mode and consumes
0.4 µA of (typical) input current (feedback divider
current not included).
MCP1665 is easy to use and allows creating classic
boost, SEPIC or flyback DC-DC converters within a
small Printed Circuit Board (PCB) area. All
compensation and protection circuitry are integrated to
minimize the number of external components. Ceramic
input and output capacitors are used.
Package Types
MCP1665
2 x 2 mm VQFN*
PGND 1
PGND 2
SGND 3
FB 4
PGND
10
EP
0
5
MODE
9 SW
8 SW
7 EN
6 VIN
*Includes Exposed Thermal Pad (EP); see Table 3-1
2017 Microchip Technology Inc.
DS20005872A-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP1665 Datasheet

High-Voltage 3.6A Integrated Switch PFM/PWM Boost Regulator

No Preview Available !

MCP1665
Typical Applications
VIN
3.6V-4.2V
+ CIN
2x10 µF
-
+ PFM/PWM
PWM Only
-
+
ON
OFF
-
L
4.7 µH
U1
SW
VIN
MCP1665
MODE
VFB
EN
GND
D
20V 2A
VOUT
12V 1 A
RTOP
180 k
RBOT
20 k
COUT
4x10 µF
VIN
3.3V-4.2V
+
CIN
2x10 µF
-
Best Efficiency vs. IOUT
L
10 µH
D
40V 1A
VOUT
24V, >350 mA
SW
VIN
MCP1665
MODE
VFB
EN
GND
CTOP
15 pF
RTOP
383 k
RBOT
20 k
COUT
4x10 µF
100
90
80
70
60
50
40
30
20
10
0
0.1
VOUT=12V
PWM/PFM
PWM ONLY
1
10
IOUT (mA)
VIN=5V
VIN=3.6V
100 1000
DS20005872A-page 2
2017 Microchip Technology Inc.


Part Number MCP1665
Description High-Voltage 3.6A Integrated Switch PFM/PWM Boost Regulator
Maker Microchip
Total Page 30 Pages
PDF Download

MCP1665 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 MCP1661 High-Voltage Integrated Switch PWM Boost Regulator
Microchip
2 MCP1662 High-Voltage Step-Up LED Driver
Microchip
3 MCP1663 High-Voltage Integrated Switch PWM Boost Regulator
Microchip
4 MCP1665 High-Voltage 3.6A Integrated Switch PFM/PWM Boost Regulator
Microchip





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy