Datasheet
Table Of Contents
- 2.0 MHz, 500 mA Synchronous Buck Regulator
- Package Types
- Typical Application Circuit
- Functional Block Diagram
- 1.0 Electrical Characteristics
- 2.0 Typical Performance Curves
- 3.0 Pin Descriptions
- 4.0 Detailed Description
- 5.0 Application Information
- 6.0 Typical Application Circuits
- 7.0 Packaging Information
- Appendix A: Revision History
- Product Identification System
- Trademarks
- Worldwide Sales and Service
MCP1603/B/L
DS22042B-page 2 2007-2012 Microchip Technology Inc.
Package Types
Typical Application Circuit
1
2
34
5
L
X
V
FB
/V
OUT
SHDN
GND
V
IN
1
2
34
5
L
X
V
FB
/V
OUT
SHDN
GND
V
IN
MCP1603/MCP1603B
TSOT
MCP1603L
TSOT
MCP1603
2x3 DFN*
SHDN
NC
V
FB
/V
OUT
V
IN
NC
1
2
3
4
8
7
6
5
NC
GNDL
X
* Includes Exposed Thermal Pad (EP); see Table 3-1.
EP
9
V
IN
SHDN
GND
V
FB
L
X
V
IN
2.7V to 4.5V
V
OUT
1.8V @ 500 mA
C
OUT
4.7 µF
C
IN
4.7 µF
L
1
4.7 µH
30
40
50
60
70
80
90
100
Efficiency (%)
V
OUT
= 1.8V
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.5V
10
20
30
0.1 1 10 100 1000
Output Current (mA)
__ PFM/PWM (MCP1603/L)
--- PWM (MCP1603B)