MCP1631-E/ML Microchip Technology, MCP1631-E/ML Datasheet - Page 4

• Manufacturer Part Number: MCP1631-E/ML
• Description: IC,SMPS CONTROLLER,CURRENT-MODE,LLCC,20PIN,PLASTIC
• Manufacturer: Microchip Technology

Specifications of MCP1631-E/ML

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 2MHz
• Duty Cycle: 10%
• Voltage - Supply: 3 V ~ 5.5 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Frequency-max: 2MHz
• Output Voltage: 3.3 V to 5 V
• Output Current: 250 mA
• Input Voltage: 3 V to 5.5 V
• Switching Frequency: 2 MHz
• Operating Temperature Range: - 40 C to + 125 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MCP1631/HV/MCP1631V/VHV
Functional Block Diagram
DS22063A-page 4
SHDN
A
OSC
OV
CS/VR
V
V
COMP
FB
VDD_OUT
IN
REF
IN
Note 1: For Shutdown control, amplifier A3 remains functional so
IN
AMP
2: For HV options, internal Low Drop Out Regulator provides
/ A
A
V
GND
-
+
A1
VDD_IN
battery voltage can be sensed during discharge phase.
+3.3V or +5.0V bias to V
DD
+3.3V or +5.0V
LDO
250 mA
2.7V Clamp
V
DD
2R
V
(1)
Shutdown Control
A3 Remains On
DD
MCP1631HV/VHV High Speed PIC PWM
0.1 µA
+
C1
-
DD
V
V
DD
.
DD
OSC
R
S
R
DIS
Remove for MCP1631V
and MCP1631VHV Options
Internal
1.2V V
100 kΩ
Internal Regulator for MCP1631HV and MCP1631VHV
Options Only; For MCP1631 and MCP1631V AV
REF
UVLO
V
+
-
C2
DD
Q
Overvoltage Comp
w/ Hysteresis
Q
OT
© 2007 Microchip Technology Inc.
10R
V
V
A3
A2
DD
DD
P
VDD
+
+
-
-
R
R
DD_IN
P
V
GND
100 kΩ
VS
is input
IS
EXT
VS
OUT
OUT
IS
IN
IN