MCP1650REUN MICROCHIP [Microchip Technology], MCP1650REUN Datasheet

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MCP1650REUN

Manufacturer Part Number
MCP1650REUN
Description
750 kHz Boost Controller
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
Features
• Output Power Capability Over 5 Watts
• Output Voltage Capability From 3.3V to Over
• 750 kHz Gated Oscillator Switching Frequency
• Adaptable Duty Cycle for Battery or Wide-Input,
• Input Voltage Range: 2.0V to 5.5V
• Capable of SEPIC and Flyback Topologies
• Shutdown Control with I
• Low Operating Quiescent Current: I
• Voltage Feedback Tolerance (0.6%, Typical)
• Popular MSOP-8 Package
• Peak Current Limit Feature
• Two Undervoltage Lockout (UVLO) Options:
• Operating Temperature Range: -40°C to +125°C
Applications
• High-Power Boost Applications
• High-Voltage Bias Supplies
• White LED Drivers and Flashlights
• Local 3.3V to 5.0V Supplies
• Local 3.3V to 12V Supplies
• Local 5.0V to 12V Supplies
• LCD Bias Supply
Package Types
M
100V
Voltage-Range Applications
- 2.0V or 2.55V
2004 Microchip Technology Inc.
GND
GND
EXT
EXT
CS
CS
FB
FB
Q
< 0.1 µA (Typical)
8-Pin MSOP
8-Pin MSOP
1
2
3
4
1
2
3
4
750 kHz Boost Controller
Q
MCP1650/51/52/53
= 120 µA
8
7
6
5
8
7
6
5
V
NC
NC
SHDN
V
PG
NC
SHDN
IN
IN
Description
The MCP1650/51/52/53 is a 750 kHz gated oscillator
boost controller packaged in an 8 or 10-pin MSOP
package. Developed for high-power, portable applica-
tions, the gated oscillator controller can deliver 5 watts
of power to the load while consuming only 120 µA of
quiescent current at no load. The MCP1650/51/52/53
can operate over a wide input voltage range (2.0V to
5.5V) to accommodate multiple primary-cell and single-
cell Li-Ion battery-powered applications, in addition to
2.8V, 3.3V and 5.0V regulated input voltages.
An internal 750 kHz gated oscillator makes the
MCP1650/51/52/53 ideal for space-limited designs.
The high switching frequency minimizes the size of the
external inductor and capacitor, saving board space
and cost. The internal oscillator operates at two differ-
ent duty cycles depending on the level of the input volt-
age. By changing duty cycle in this fashion, the peak
input current is reduced at high input voltages, reducing
output ripple voltage and electrical stress on power
train components. When the input voltage is low, the
duty cycle changes to a larger value in order to provide
full-power capability at a wide input voltage range
typical of battery-powered, portable applications.
The MCP1650/51/52/53 was designed to drive external
switches
MOSFETs.
Additional features integrated on the MCP1650/51/52/
53 family include peak input current limit, adjustable
output voltage/current, low battery detection and
power-good indication.
GND
GND
EXT
EXT
NC
CS
CS
FB
FB
10-Pin MSOP
8-Pin MSOP
1
2
3
4
1
2
3
4
5
directly
10
using
9
7
6
5
8
7
6
8
V
LBO
LBI
SHDN
V
PG
LBO
LBI
SHDN
internal
IN
IN
DS21876A-page 1
low-resistance

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MCP1650REUN Summary of contents

Page 1

M 750 kHz Boost Controller Features • Output Power Capability Over 5 Watts • Output Voltage Capability From 3.3V to Over 100V • 750 kHz Gated Oscillator Switching Frequency • Adaptable Duty Cycle for Battery or Wide-Input, Voltage-Range Applications • ...

Page 2

MCP1650/51/52/53 MCP1650 Block Diagram V IN Internal Osc. with 2 fixed Duty Cycles V DUTY SHDN ON/OFF Control Voltage Feedback REF 1.22V DS21876A-page 2 MCP1650 ...

Page 3

MCP1651/2/3 Block Diagram MCP1650/51/52/53 MCP1650 - No Features MCP1651 - Low Battery Detection MCP1652 - Power Good Indication MCP1653 - Low Battery Detection and PG LBI Vin SHDN 2004 Microchip Technology Inc. MCP1650/51/52/53 MCP1653 - LBI and ...

Page 4

MCP1650/51/52/53 Timing Diagram Osc EXT Latch Truth Table Typical Application Circuits 3.3V to 12V 100 mA Boost Converter V IN GND Input SHDN C 10 µF ...

Page 5

ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † V GND........................................................... 6. CS,FB,LBI,LBO,SHDN,PG,EXT............ GND – 0.3V to Current at EXT pin ................................................ ±1A Storage temperature .......................... -65°C to +150°C Operating Junction Temperature........ -40°C to +125°C ESD protection on all pins ...

Page 6

MCP1650/51/52/53 DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise noted, all parameters apply -40°C to +125°C. Typical values apply for V J Parameters Sym Shutdown Input Logic High Input V IN-HIGH Logic Low Input V IN-Low Input ...

Page 7

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 ...

Page 8

MCP1650/51/52/53 Note: Unless otherwise indicated mA 3.3 µH, SHDN > OUT +25°C A 0.8 I SINK 0.6 0.4 I SOURCE 0.2 0.0 2.7 3.0 3.3 ...

Page 9

Note: Unless otherwise indicated mA 3.3 µH, SHDN > OUT IH A FIGURE 2-13: Dynamic Line Response. FIGURE 2-14: Power-Up Timing (Input Voltage). FIGURE 2-15: Power-Up Timing (Shutdown). 2004 Microchip ...

Page 10

MCP1650/51/52/53 Note: Unless otherwise indicated mA 3.3 µH, SHDN > OUT IH A 12.17 12. 3.3V IN 12.15 12.14 12. 4.3V IN 12.12 12.11 12.10 10 ...

Page 11

Note: Unless otherwise indicated mA 3.3 µH, SHDN > OUT TH(HIGH TH(Hysteresis -10 PG TH(LOW) -15 -20 2.7 3 3.3 ...

Page 12

MCP1650/51/52/53 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE Pin No. Pin No. Pin No. Pin No. MCP1650 MCP1651 MCP1652 MCP1653 ...

Page 13

DETAILED DESCRIPTION 4.1 Device Overview The MCP1650/51/52/ gated oscillator boost controller. By adding an external N-channel MOSFET, schottky diode and boost inductor, high-output power applications can be achieved. The 750 kHz hysteretic gated oscillator architecture enables the ...

Page 14

MCP1650/51/52/53 4.7 FB Pin The output voltage is fed back through a resistor divider to the FB pin then compared to an internal 1.22V reference. When the divided-down output is below the internal reference, the internal oscillator is ...

Page 15

APPLICATION CIRCUITS/ ISSUES 5.1 Typical Applications The MCP1650/51/52/53 boost controller can be used in several different configurations and in many different applications. For applications that require minimum space, low cost and high efficiency, the MCP1650/51/ 52/53 product family is ...

Page 16

MCP1650/51/52/53 5.1.2 BOOTSTRAP BOOST APPLICATIONS For bootstrap configurations, the higher-regulated boost output voltage is used to power the MCP1650/ 51/52/53. This provides a constant higher voltage used to drive the external MOSFET. The R-option devices (UVLO < 2.0V) can be ...

Page 17

Design Considerations When developing switching power converter circuits, there are numerous things to consider and the MCP1650/51/52/53 family is no exception. The gated oscillator architecture does provide a simple control approach so that stabilizing the regulator output is an ...

Page 18

MCP1650/51/52/53 To determine the maximum inductance Discontinuous Operating mode, multiply the energy going into the inductor every switching cycle by the number of cycles per second (switching frequency). This number must be greater than the maximum input power. The equation ...

Page 19

INPUT/OUTPUT CAPACITOR SELECTION There are no special requirements on the input or output capacitor. For most applications, ceramic capacitors or low effective series resistance (ESR) tan- talum capacitors will provide lower output ripple voltage than aluminum electrolytic. Care must ...

Page 20

MCP1650/51/52/53 6.0 TYPICAL LAYOUT (+2.8V to +4.8V Input to +5V Output @ 1A) TP1 + Power Train Path F1 FUSE Single-Cell Li-Ion R1 100 Input (2.8V to 4.8V) C2 47µ TP4 C3 GND R5 0.1µ 73.2K 0 ...

Page 21

Figure 6-2 represents the top wiring for the MCP1650/ 51/52/53 application shown. As shown in Figure 6-2, the high-current wiring is short and wide. In this example oz. copper layer is used for both the top and bottom ...

Page 22

MCP1650/51/52/53 7.0 PACKAGING INFORMATION 7.1 Package Marking Information 8-Lead MSOP (MCP1650, MCP1651, MCP1652) XXXXX YWWNNN 10-Lead MSOP (MCP1653) XXXXX YYWWNNN Legend: XX...X Customer specific information* YY Year code (last 2 digits of calendar year) WW Week code (week of January ...

Page 23

Plastic Micro Small Outline Package (UA) (MSOP (F) β Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff Overall Width Molded Package Width Overall Length Foot Length Footprint (Reference) Foot ...

Page 24

MCP1650/51/52/53 10-Lead Plastic Micro Small Outline Package (UN) (MSOP (F) Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff Overall Width Molded Package Width Overall Length Foot Length Footprint Foot Angle ...

Page 25

PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office PART NO Device UVLO Temperature Options Range Device MCP1650: 750 kHz Boost Controller MCP1651: 750 kHz ...

Page 26

MCP1650/51/52/53 NOTES: DS21876A-page 26 2004 Microchip Technology Inc. ...

Page 27

Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families ...

Page 28

M W ORLDWIDE AMERICAS Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: 480-792-7627 Web Address: http://www.microchip.com Atlanta 3780 Mansell Road, Suite 130 Alpharetta, GA 30022 Tel: 770-640-0034 Fax: 770-640-0307 Boston 2 Lan Drive, ...

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