MCP1631RD-MCC1 Microchip Technology, MCP1631RD-MCC1 Datasheet - Page 109
![REFERENCE DESIGN FOR MCP1631HV](/photos/24/9/240964/4683990_sml.jpg)
MCP1631RD-MCC1
Manufacturer Part Number
MCP1631RD-MCC1
Description
REFERENCE DESIGN FOR MCP1631HV
Manufacturer
Microchip Technology
Type
Battery Managementr
Datasheets
1.MCP1631VHVT-330EST.pdf
(34 pages)
2.MCP1631HV-330EST.pdf
(54 pages)
3.MCP1631RD-MCC2.pdf
(20 pages)
4.MCP1631RD-MCC2.pdf
(328 pages)
5.MCP1631RD-MCC1.pdf
(28 pages)
Specifications of MCP1631RD-MCC1
Main Purpose
Power Management, Battery Charger
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
MCP1631HV, PIC16F883
Primary Attributes
1 ~ 2 Cell- Li-Ion, 1 ~ 4 Cell- NiCd/NiMH
Secondary Attributes
Status LEDs
Supported Devices
MCP1631HV, PIC16F883 Device Type
Tool / Board Applications
Power Management-Battery Management
Development Tool Type
Reference Design
Input Voltage
5.5 V to 16 V
Product
Power Management Modules
Mcu Supported Families
MCP1631HV/PIC16F883 Family
Silicon Manufacturer
Microchip
Silicon Core Number
MCP1631HV
Kit Application Type
Reference Design
Application Sub Type
Battery Charger
Kit Contents
Board Only
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
MCP1631HV, PIC16F883
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- MCP1631VHVT-330EST PDF datasheet
- MCP1631HV-330EST PDF datasheet #2
- MCP1631RD-MCC2 PDF datasheet #3
- MCP1631RD-MCC2 PDF datasheet #4
- MCP1631RD-MCC1 PDF datasheet #5
- Current page: 109 of 328
- Download datasheet (6Mb)
9.3
For the ADC to meet its specified accuracy, the charge
holding capacitor (C
charge to the input channel voltage level. The Analog
Input model is shown in Figure 9-4. The source
impedance (R
impedance directly affect the time required to charge the
capacitor C
varies over the device voltage (V
The maximum recommended impedance for analog
sources is 10 kΩ. As the source impedance is
decreased, the acquisition time may be decreased.
After the analog input channel is selected (or changed),
EQUATION 9-1:
© 2009 Microchip Technology Inc.
Note 1: The reference voltage (V
The value for T
Solving for T
Therefore:
Assumptions:
V
V
V
2: The charge holding capacitor (C
3: The maximum recommended impedance for analog sources is 10 kΩ. This is required to meet the pin
A/D Acquisition Requirements
AP PLIE D
AP P LI ED
AP P LIED
HOLD
T
leakage specification.
S
ACQ
T
) and the internal sampling switch (R
T
. The sampling switch (R
ACQ
C
⎛
⎝
C
⎛
⎜
⎝
⎛
⎜
⎝
=
=
=
1
=
=
:
1 e
1 e
C
HOLD
=
=
=
–
2
ACQUISITION TIME EXAMPLE
Temperature
–
–
4.67
–
can be approximated with the following equations:
–
1.37
ΜS
10pF 1k
--------------------------
(
C
Amplifier Settling Time
T
2µs
2
) must be allowed to fully
AMP
HOLD
–
--------- -
–
-------- -
RC
+
n
RC
ΜS
µs
T
Tc
+
+
C
1.37
(
1
⎞
⎟
⎠
⎞
⎟
⎠
1
+
T
(
) 1
R
C
=
=
Ω
T
ΜS
DD
–
IC
+
C
+
), see Figure 9-4.
V
V
+
+
[
+
REF
⎞
⎠
(
7k
=
CHOLD
A P PLIE D
Temperature - 25°C
T
R
[
SS
(
Ω
COFF
=
) has no effect on the equation, since it cancels itself out.
SS
50°C- 25°C
) impedance
50°C and external impedance of 10k
+
+
V
HOLD
10k
CHOLD
R
PIC16F882/883/884/886/887
S
⎛
⎝
) ln(1/2047)
+
1
Ω
) is not discharged after each conversion.
SS
)
Hold Capacitor Charging Time
–
ln(0.0004885)
)
) 0.05
--------------------------
(
(
2
n
+
) 0.05µs/°C
1
ΜS
1
(
) 1
/°C
an A/D acquisition must be done before the conversion
can be started. To calculate the minimum acquisition
time, Equation 9-1 may be used. This equation
assumes that 1/2 LSb error is used (1024 steps for the
ADC). The 1/2 LSb error is the maximum error allowed
for the ADC to meet its specified resolution.
–
)
⎞
⎠
]
;[2] V
;combining [1] and [2]
;[1] V
)
]
CHOLD
CHOLD
Ω
5.0V V
+
charge response to V
charged to within 1/2 lsb
Temperature Coefficient
DD
DS41291F-page 107
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