MCP1630-E/P Microchip Technology, MCP1630-E/P Datasheet - Page 16

• Manufacturer Part Number: MCP1630-E/P
• Description: PIC High Speed Pulse Width Modulator, -40C to +125C, 8-PDIP, TUBE
• Manufacturer: Microchip Technology

MCP1631/HV/MCP1631V/VHV
3.9
High voltage input for MCP1631HV/MCP1631VHV
devices, operates from 3.5V to 16V input supply.
3.10
Analog bias input, minimum 3.0V to 5.5V operation for
MCP1631/MCP1631V devices.
3.11
Regulated V
MCP1631HV/MCP1631VHV and external microcon-
troller, supplies up to 250 ma of bias current at 3.3V or
5.0V regulated low drop out rail.
3.12
Voltage sense amplifier (A3) input, connect to high
impedance battery voltage resistor divider to sense
battery voltage with minimal loading.
3.13
Connect to SEPIC secondary side sense resistor to
develop a regulated current source used to charge
multi-chemistry batteries.
3.14
Voltage sense amplifier output, connect to microcon-
troller analog to digital converter to measure battery
voltage.
3.15
Current sense amplifier output, connect to error
amplifier (A1) inverting input (FB) to regulate SEPIC
output current.
DS22063A-page 16
Input Voltage (V
Analog supply Input (A
Analog Supply Output (A
Voltage Sense Input (VS
Current Sense Input (IS
Voltage Sense Output (VS
Current Sense Output (IS
DD
output used to power internal
IN
)
VDD_IN
IN
IN
VDD_OUT
)
OUT
)
OUT
)
)
)
)
3.16
Error amplifier (A1) output, connect control loop com-
pensation from FB input to COMP output pin.
3.17
Error amplifier input (A1), connect to current sense
output amplifier (A2) to regulate current.
3.18
For MCP1631/MCP1631HV applications, connect to
low side current sense of SEPIC switch for current
mode control and peak current limit. For MCP1631/
MCP1631HV application, connect artificial ramp volt-
age to V
3.19
Power V
to +5.0V or +3.3V supply for driving external MOSFET.
3.20
High current driver output used to drive external
MOSFET at high frequency, capable of 1A peak
currents with +5.0V P
3.21
Connect center thermal tab to A
RAMP
DD
Error Amplifier Output (COMP)
Feedback (FB)
Current Sense or Voltage Ramp
(CS/V
Power VDD (P
External Driver (V
Exposed PAD 4x4 QFN (EP)
input, V
input for voltage mode PWM control.
RAMP
EXT
VDD
)
gate drive supply input, connect
© 2007 Microchip Technology Inc.
.
VDD
GND
)
EXT
.
)