MCP1640 Microchip Technology Inc., MCP1640 Datasheet - Page 19

• Manufacturer Part Number: MCP1640
• Description: 0.65v Start-up Synchronous Boost Regulator With True Output Disconnect Or Input/output Bypass Option
• Manufacturer: Microchip Technology Inc.

6.0
FIGURE 6-1:
FIGURE 6-2:
 2010 Microchip Technology Inc.
Note:
TYPICAL APPLICATION CIRCUITS
MANGANESE LITHIUM
DIOXIDE BUTTON CELL
2.0V TO 3.2V
FROM PIC
For applications that can operate directly from the battery input voltage during Sleep mode and
require a higher voltage during normal run mode, the MCP1640C device provides input to output
bypass when disabled. The PIC Microcontroller is powered by the output of the MCP1640C. One
of its I/O pins is used to enable and disable the MCP1640C to control its bias voltage. While
operating in Sleep mode, the MCP1640C input quiescent current is typically less than 1 uA.
Manganese Lithium Coin Cell Application using Bypass Mode.
USB On-The-Go Powered by Li-Ion.
3.3V To 4.2V
+
V
®
-
IN
MCU I/O
+
-
10
C
IN
µ
F
4.7
C
IN
µ
F
10
L
1
µ
EN
V
H
P
IN
GND
SW
4.7
L
1
µ
EN
S
V
V
V
H
GND
IN
OUTS
OUTP
SW
V
GND
FB
V
OUT
V
FB
309 K
976 K
MCP1640/B/C/D
5.0V @ 350 mA
309 K
976 K
V
OUT
C
10
5.0V @ 5 mA
OUT
µ
V
F
OUT
C
10
OUT
µ
F
DS22234A-page 19