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MMPF0100Z Datasheet(PDF) 94 Page - NXP Semiconductors

Part # MMPF0100Z
Description  14 channel configurable power management integrated circuit
PDF  128 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

MMPF0100Z Datasheet(HTML) 94 Page - NXP Semiconductors

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NXP Semiconductors
PF0100Z
FUNCTIONAL BLOCK REQUIREMENTS AND BEHAVIORS
6.4.7.1.1
Coin cell charger control
The coin cell charger circuit functions as a current-limited voltage source, resulting in the CC/CV taper characteristic typically used for
rechargeable Lithium-Ion batteries. The coin cell charger is enabled via the COINCHEN bit, while the coin cell voltage is programmable
through the VCOIN[2:0] bits on register COINCTL in Table 112. The coin cell charger voltage is programmable. In the on state, the charger
current is fixed at ICOINHI. In sleep and standby modes, the charger current is reduced to a typical 10
μA. In the off state, coin cell charging
is not available as the main battery could be depleted unnecessarily. The coin cell charging is stopped when VIN is below UVDET.
6.4.7.1.2
External components
6.4.7.1.3
Coin cell specifications
Table 111. Coin cell charger voltage
VCOIN[2:0]
VCOIN (V)(78)
000
2.50
001
2.70
010
2.80
011
2.90
100
3.00
101
3.10
110
3.20
111
3.30
Notes
78.
Coin cell voltages selected based on the
type of LICELL used on the system.
Table 112. Register COINCTL - ADDR 0x1A
Name
Bit #
R/W
Default
Description
VCOIN
2:0
R/W
0x00
Coin cell charger output voltage selection.
See Table 111 for all options selectable through
these bits.
COINCHEN
3
R/W
0x00
Enable or disable the coin cell charger
UNUSED
7:4
–
0x00
unused
Table 113. Coin cell charger external components
Component
Value
Units
LICELL bypass capacitor
100
nF
Table 114. Coin cell charger specifications
Parameter
Typ
Unit
Voltage accuracy
100
mV
Coin cell charge current in on mode ICOINHI
60
μA
Current accuracy
30
%



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