Cymbet MDP79410 Microchip mdp79410 rtc power backup with enerchip battery Datasheet

Microchip MDP79410 Real Time Clock
How2 Info Sheet
Microchip MDP79410 RTC Power Backup with EnerChip™ Battery
IP™
ENERCH -D9C
0
5
1
3
CBC
Applications
EnerChips are an attractive RTC backup alternative to batteries or supercapacitors, especially when the
finished product has limited PCB space, size constraints or needs to be sealed or installed in a hard-toreach location. They are also excellent if you have any of these design requirements:
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Battery must be RoHS and WEEE compliant
Product can be discarded without removing battery
Product must have battery installed during shipping via air
Battery must be rechargeable to support a lifetime of power outages
Battery must provide backup power for several hours during a main power failure
MDP79410
CBC3105
CBC3112
CBC3150
Iq (nA at 3V)
Back up
time (hrs)
Package Size
(mm x mm)
Back up
time (hrs)
Package Size
(mm x mm)
Back up
time (hrs)
Package Size
(mm x mm)
XXX
XX
4x5
XXX
7x7
XXX
9x9
Advantages of Combining These Two Parts
Cymbet EnerChips are solid-state, rechargeable batteries with
the following characteristics when compared to conventional
rechargeable batteries:
Low self-discharge
Are solder reflow tolerant
Flat discharge voltage profile
High charge/discharge cycle life
Simple voltage controlled charging
Have no flammable solvents to leak or catch fire
Are offered in low profile surface mount packages
Documentation
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Y1
32.768KHz
1
2
3
C4
4
GND
R1
U1 MCP7941X
X1
VCC
X2
IRQ/CLK
VBAT
SCL
VSS
SDA
R2
7
IRQ*/CLK
6
SCL
5
SDA
U2 CBC31XX
VCHG
CP
C1
VBAT
0.1uF
VMODE
EN
VCC
C2
1.0uF
CN
EN
RESET
VIN
VOUT
RESET/
C3
1.0uF
Cymbet Application Note: AN-1046
Cymbet Evaluation Kits: CBC-EVAL-05B, CBC-EVAL-06
Data Sheets: Microchip MDP79410, CBC3105, CBC3112, CBC3150
All Cymbet Documents and Downloads: http://www.cymbet.com/products/datasheets-downloads.php
Evaluation Kits
Cymbet EnerChip
RTC CBC-EVAL-06
Cymbet EnerChip
CBC-EVAL-05B
©2013 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com
Cymbet, the Cymbet Logo and EnerChip are trademarks of Cymbet Corporation. All Rights Reserved
Doc MD-72-0XX Rev A
R3
8
GND
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•
•
•
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C5
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