MCP1631RD-MCC2 Microchip Technology, MCP1631RD-MCC2 Datasheet - Page 9

• Manufacturer Part Number: MCP1631RD-MCC2
• Description: REFERENCE DESIGN MCP1631HV
• Manufacturer: Microchip Technology

Specifications of MCP1631RD-MCC2

• Main Purpose: Power Management, Battery Charger
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP1631HV, PIC16F883
• Primary Attributes: 1 ~ 2 Cell- Li-Ion, 1 ~ 5 Cell- NiCd/NiMH, 1 ~ 2 1W LEDs
• Secondary Attributes: Status LEDs
• Silicon Manufacturer: Microchip
• Application Sub Type: Battery Charger
• Kit Application Type: Power Management - Battery
• Silicon Core Number: MCP1631HV, PIC16F883
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

System Level Block Diagram
The system level block diagram shown in
represents all of the MCP1631HV internal blocks. The
SHDN input is used to turn off the charger and lower
FIGURE 8:
© 2007 Microchip Technology Inc.
SHDN
A
OSC
OV
CS/VR
V
COMP
V
FB
VDD_OUT
IN
REF
IN
Note 1: For Shutdown control, amplifier A3 remains functional so
IN
AMP
/ A
A
V
-
GND
+
A1
VDD_IN
battery voltage can be sensed during discharge phase.
DD
+3.3V or +5.0V
LDO
250 mA
MCP1631HV Block Diagram.
2.7V Clamp
V
DD
2R
V
Shutdown Control
A3 Remains On
DD
MCP1631HV/VHV High-Speed Analog PWM
0.1 µA
+
C1
-
V
V
DD
DD
OSC
Figure 7
R
R
S
DIS
Internal
1.2V V
100 kΩ
REF
the quiescent current draw to a 4.4 µA typical, the +5V
generated bias is available and A3 remain powered for
battery monitoring and microcontroller power.
UVLO
+
V
-
C2
DD
Q
Overvoltage Comp
w/ Hysteresis
Q
OT
10R
V
V
A3
A2
DD
DD
P
VDD
+
+
-
-
AN1137
R
R
DS01137A-page 9
P
V
GND
100 kΩ
VS
EXT
IS
VS
OUT
OUT
IS
IN
IN