Datasheets»Microchip Technology»MCP1640DT-I/CHY Datasheet

MCP1640DT-I/CHY Datasheet

Download or read online Microchip Technology MCP1640DT-I/CHY IC CONV DCDC STEPUP SYNC SOT23-6 pdf datasheet.
Also see for MCP1640DT-I/CHY: Datasheet #2 (26 pages)



Page
1 of 32
next
0.65V Start-up Synchronous Boost Regulator with True
Output Disconnect or Input/Output Bypass Option
Features
• Up to 96% Typical Efficiency
• 800 mA Typical Peak Input Current Limit:
- I
> 100 mA @ 1.2V V
, 3.3V V
OUT
IN
- I
> 350 mA @ 2.4V V
, 3.3V V
OUT
IN
- I
> 350 mA @ 3.3V V
5.0V V
OUT
IN,
• Low Start-up Voltage: 0.65V, typical 3.3V V
@ 1 mA
• Low Operating Input Voltage: 0.35V, typical
3.3V
@ 1 mA
OUT
• Adjustable Output Voltage Range: 2.0V to 5.5V
• Maximum Input Voltage  V
< 5.5V
OUT
• Automatic PFM/PWM Operation (MCP1640/C):
- PFM Operation Disabled (MCP1640B/D)
- PWM Operation: 500 kHz
• Low Device Quiescent Current: 19 µA, typical
PFM Mode
• Internal Synchronous Rectifier
• Internal Compensation
• Inrush Current Limiting and Internal Soft-Start
• Selectable, Logic Controlled, Shutdown States:
- True Load Disconnect Option (MCP1640/B)
- Input to Output Bypass Option (MCP1640C/D)
• Shutdown Current (All States): < 1 µA
• Low Noise, Anti-Ringing Control
• Overtemperature Protection
• Available Packages:
- SOT23-6
- 2x3 8-Lead DFN
Applications
• One, Two and Three Cell Alkaline and NiMH/NiCd
Portable Products
• Single Cell Li-Ion to 5V Converters
• Li Coin Cell Powered Devices
• Personal Medical Products
• Wireless Sensors
• Handheld Instruments
• GPS Receivers
• Bluetooth Headsets
• +3.3V to +5.0V Distributed Power Supply
 2010 Microchip Technology Inc.
MCP1640/B/C/D
General Description
The MCP1640/B/C/D is a compact, high-efficiency,
fixed frequency, synchronous step-up DC-DC con-
verter. It provides an easy-to-use power supply solution
OUT
for applications powered by either one-cell, two-cell, or
OUT
three-cell alkaline, NiCd, NiMH, one-cell Li-Ion or
Li-Polymer batteries.
OUT
OUT
Low-voltage technology allows the regulator to start up
without high inrush current or output voltage overshoot
from a low 0.65V input. High efficiency is accomplished
by integrating the low resistance N-Channel Boost
switch and synchronous P-Channel switch. All
compensation and protection circuitry are integrated to
minimize
external
applications, the MCP1640 operates and consumes
only 19 µA while operating at no load and provides a
true disconnect from input to output while shut down
(EN = GND). Additional device options are available
that operate in PWM only mode and connect input to
output bypass while shut down.
A “true” load disconnect mode provides input to output
isolation while disabled by removing the normal boost
regulator diode path from input to output. A bypass
mode option connects the input to the output using the
integrated low resistance P-Channel MOSFET, which
provides a low bias keep alive voltage for circuits
operating in Deep Sleep mode. Both options consume
less than 1 µA of input current.
Output voltage is set by a small external resistor
divider. Two package options, SOT23-6 and 2x3
DFN-8, are available.
Package Types
MCP1640
6-Lead SOT23
SW
1
GND
2
3
EN
* Includes Exposed Thermal Pad (EP); see
components.
For
standby
MCP1640
2x3 DFN*
V
V
6 V
1
8
IN
FB
IN
S
V
2
7
EP
5 V
GND
OUTS
OUT
9
P
V
3
6
GND
OUTP
V
4
FB
EN
5 SW
4
Table
3-1.
DS22234A-page 1
Specifications of Microchip Technology MCP1640DT-I/CHY
Current - Output:
100mA
Duty Cycle (max):
90 %
Efficiency:
96 %
Frequency - Switching:
500kHz
ID_COMPONENTS:
1958229
Input / Supply Voltage (max):
0.8 V
Input / Supply Voltage (min):
0.65 V
Internal Switch(s):
Yes
Lead Free Status / Rohs Status:
Lead free / RoHS Compliant
Load Regulation:
0.01 %
Maximum Operating Temperature:
+ 85 C
Minimum Operating Temperature:
- 40 C
Mounting Style:
SMD/SMT
Mounting Type:
Surface Mount
Number Of Outputs:
1
Operating Temperature:
-40°C ~ 85°C
Operating Temperature Range:
- 40 C to + 85 C
Output Current:
350 mA
Output Voltage:
5 V
Package / Case:
SOT-23-6
Power - Output:
-
Series:
-
Switching Frequency:
500 KHz
Synchronous Rectifier:
Yes
Type:
Step-Up (Boost)
Voltage - Input:
0.8 ~ 5.5 V
Voltage - Output:
2 ~ 5.5 V
Product Category:
DC/DC Switching Converters
RoHS:
yes
Input Voltage MAX:
5.5 V
Number of Outputs:
1
Input Voltage MIN:
0.35 V
Other Names:
MCP1640DT-I/CHYTR

Summary of Contents

Page 1

... Wireless Sensors Handheld Instruments GPS Receivers Bluetooth Headsets 3.3V to 5.0V Distributed Power Supply 2010 Microchip Technology Inc. MCP1640/B/C/D General Description The MCP1640/B/C compact, high-efficiency, fixed frequency, synchronous step-up DC-DC con- verter. It provides an easy-to-use power supply solution ...

Page 2

... OUTS OUTP 976 K 309 K GND GND for 3.3V OUT OUT V 0.8V IN 1.0 10.0 100.0 Output Current (mA) V OUT 3.3V @ 100 mA C OUT µ OUT 5.0V @ 300 mA C OUT 10 µ 2. 1.2V IN 1000.0 2010 Microchip Technology Inc. ...

Page 3

... OUT 5: Peak current limit determined by characterization, not production tested. 2010 Microchip Technology Inc. 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 ...

Page 4

... OUT kHz %of V OUT %of V OUT IN µ µS EN Low to High, 90 Note 4 OUT C C quiescent current can be IN Units Conditions °C Steady State °C °C Transient °C/W EIA/JESD51-3 Standard °C/W 2010 Microchip Technology Inc. ...

Page 5

... Temperature in PWM Mode. 600 V OUT 500 V 3.3V OUT 400 V 2.0V 300 OUT 200 100 0 0 0.5 1 1.5 2 2.5 3 3.5 V (V) IN FIGURE 2-3: Maximum I OUT 2010 Microchip Technology Inc µ 4.7 µH, V OUT IN 100 3.3V OUT 0. FIGURE 2-4: Mode Efficiency vs. I 100 90 5.0V 80 ...

Page 6

... I (mA) OUT Minimum Start-up and into Resistive Load vs OUT V 3.3V OUT - Ambient Temperature (°C) F vs. Ambient OSC V 5.0V OUT V 3.3V OUT V 2.0V OUT (mA) OUT PWM Pulse Skipping Mode . OUT 2010 Microchip Technology Inc. 10 ...

Page 7

... OUT 3. 2.0V OUT OUT 0.5 1 1.5 2 2.5 V (V) IN FIGURE 2-15: PFM / PWM Threshold Current vs 2010 Microchip Technology Inc. MCP1640/B/C µ 4.7 µH, V OUT 5.0V OUT 3. 5.0V OUT 2.9 3.2 3.5 FIGURE 2-16: Mode Waveforms. 4 4.5 5 FIGURE 2-17: PWM Mode Waveforms 5.0V OUT 3 3.5 4 FIGURE 2-18: Waveforms ...

Page 8

... Start-up when ENABLE FIGURE 2-21: MCP1640 3.3V V Transient Waveforms. DS22234A-page µ 4.7 µH, V OUT IN OUT FIGURE 2-22: Transient Waveforms. FIGURE 2-23: IN Transient Waveforms. Load FIGURE 2-24: OUT Waveforms. 3.3V mA 25°C. LOAD A MCP1640B 3.3V V Load OUT MCP1640B 2.0V V Load OUT 3.3V V Line Transient OUT 2010 Microchip Technology Inc. ...

Page 9

... Output Voltage Pin (V OUT The output voltage pin connects the integrated P-Channel MOSFET to the output capacitor. The FB voltage divider is also connected to the V voltage regulation. 2010 Microchip Technology Inc. Table 3-1. 5 Switch Node, Boost Inductor Input Pin Ground Pin 4 Enable Control Input Pin ...

Page 10

... MCP1640/B/C/D NOTES: DS22234A-page 10 2010 Microchip Technology Inc. ...

Page 11

... Figure 2-12 represents the input voltage versus load current for the pulse skipping threshold in PWM only mode. At lighter loads, the MCP1640B/D devices begin to skip pulses. 2010 Microchip Technology Inc. MCP1640/B/C/D 4.1.3 TRUE OUTPUT DISCONNECT OPTION The MCP1640/B devices incorporate a true output disconnect feature ...

Page 12

... There is no undervoltage lockout feature for the MCP1640/B/C/D. The device will start up at the lowest possible voltage and run down to the lowest possible voltage. For typical battery applications, this may result in motor-boating for deeply discharged batteries. 2010 Microchip Technology Inc. FB ...

Page 13

... V disable the boost converter, the EN voltage must be less than 20% of the V voltage. IN 2010 Microchip Technology Inc. MCP1640/B/C/D 4.2.6 INTERNAL BIAS The MCP1640/B/C/D gets its start-up bias from V Once the output exceeds the input, bias comes from the output ...

Page 14

... MCP1640/B/C/D NOTES: DS22234A-page 14 2010 Microchip Technology Inc. ...

Page 15

... The FB input leakage current can also impact the divider and change the output voltage tolerance. 2010 Microchip Technology Inc. MCP1640/B/C/D 5.3 Input Capacitor Selection The boost input current is smoothed by the boost inductor reducing the amount of filtering necessary at the input ...

Page 16

... C. 5-3. OUT – OUT OUT Dis , C and the inductor. IN OUT 2 L power INRMS ESR 2010 Microchip Technology Inc. ...

Page 17

... IN GND FIGURE 5-1: MCP1640/B/C/D SOT23-6 Recommended Layout GND FIGURE 5-2: MCP1640/B/C/D DFN-8 Recommended Layout. 2010 Microchip Technology Inc. MCP1640/B/C/D Via to GND Plane R R BOT MCP1640 1 Via for Enable L MCP1640 1 Enable TOP V OUT C OUT GND Wired on Bottom Plane V OUT ...

Page 18

... MCP1640/B/C/D NOTES: DS22234A-page 18 2010 Microchip Technology Inc. ...

Page 19

... Sleep mode, the MCP1640C input quiescent current is typically less than 1 uA. FIGURE 6-1: Manganese Lithium Coin Cell Application using Bypass Mode 3. µ FIGURE 6-2: USB On-The-Go Powered by Li-Ion. 2010 Microchip Technology Inc µ 4 OUT µ ...

Page 20

... MCP1640/B/C/D NOTES: DS22234A-page 20 2010 Microchip Technology Inc. ...

Page 21

... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. 2010 Microchip Technology Inc. MCP1640/B/C/D Example BZNN Example ...

Page 22

... MCP1640/B/C/D /HDG 3ODVWLF 6PDOO 2XWOLQH 7UDQVLVWRU & >627 1RWH N PIN LASER MARK 1RWHV DS22234A-page φ 2010 Microchip Technology Inc. ...

Page 23

... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 2010 Microchip Technology Inc. MCP1640/B/C/D DS22234A-page 23 ...

Page 24

... MCP1640/B/C/D /HDG 3ODVWLF 'XDO )ODW 1R /HDG 3DFNDJH 0& ± 1RWH D N NOTE TOP VIEW A3 1RWHV DS22234A-page 24 PP %RG >') EXPOSED PAD BOTTOM VIEW A NOTE NOTE 2010 Microchip Technology Inc. ...

Page 25

... Microchip Technology Inc. MCP1640/B/C/D PP %RG >')1@ DS22234A-page 25 ...

Page 26

... MCP1640/B/C/D NOTES: DS22234A-page 26 2010 Microchip Technology Inc. ...

Page 27

... APPENDIX A: REVISION HISTORY Revision A (February 2010) Original Release of this Document. 2010 Microchip Technology Inc. MCP1640/B/C/D DS22234A-page 27 ...

Page 28

... MCP1640/B/C/D NOTES: DS22234A-page 28 2010 Microchip Technology Inc. ...

Page 29

... MCP1640DT-I/MC:: Tape and Reel, (Industrial) i) MCP1640T-I/CHY: j) MCP1640BT-I/CHY: Tape and Reel, k) MCP1640CT-I/CHY: Tape and Reel, l) MCP1640DT-I/CHY: Tape and Reel, . 0.65V, Sync Reg., 8LD-DFN pkg. Tape and Reel, 0.65V, Sync Reg., 8LD-DFN pkg. 0.65V, Sync Reg., 8LD-DFN pkg. Tape and Reel, ...

Page 30

... MCP1640/B/C/D NOTES: DS22234A-page 30 2010 Microchip Technology Inc. ...

Page 31

... REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2010, Microchip Technology Incorporated, Printed in the U ...

Page 32

... Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 2010 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris ...

Comments to this Datasheet