MCP1640T-I/MC Microchip Technology, MCP1640T-I/MC Datasheet - Page 14
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
MCP1640T-I/MC
Manufacturer Part Number
MCP1640T-I/MC
Description
500 KHz, 300 MA Syn. Boost, Output Disconnect & PWM/PFM Enabled 8 DFN 2x3mm T/R
Manufacturer
Microchip Technology
Type
Step-Up (Boost)r
Specifications of MCP1640T-I/MC
Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
2 ~ 5.5 V
Current - Output
100mA
Frequency - Switching
500kHz
Voltage - Input
0.8 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-DFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP1640T-I/MC
Manufacturer:
MICROCHIP
Quantity:
12 000
MCP1640 Single Quadruple-A Battery Boost Converter Reference Design
DS51922A-page 14
FIGURE 2-2:
Reference Design Setup Circuit.
2.2.2
The board is powered from a quadruple-A battery which has 600 mAh typical capacity.
If the battery is inserted in the holder, the application will start running in Standby mode.
In this mode, PIC12F617 works in Sleep Mode most of the time, consuming a few µA
from the battery. MCP1640 consumes 0.75 µA typically in Shutdown mode. When
MCP1640 is in normal operating mode, the No Load Input Current is approximately
70 µA at 1.5V input. To reduce the average input current of the board, the MCP1640’s
EN input is pulsed at a slow rate. Figure 2-3 shows that this current is reduced up to
80%.
FIGURE 2-3:
in Standby Mode.
+
AAAA Battery
How the MCP1640 Single Quadruple-A Battery Boost Converter
Reference Design is working?
3.3V OUT
30
25
20
15
10
0.8
MCP1640 Single Quadruple-A Battery Boost Converter
The Average Current Consumed from the Battery
S1: Switch ON/OFF
_
3.3V OUT
1
Input Voltage (V)
1.2
Voltmeter
© 2010 Microchip Technology Inc.
1.4
47R/0.5W
1.6