MCP1603-ADJI/MC Microchip Technology, MCP1603-ADJI/MC Datasheet - Page 7

• Manufacturer Part Number: MCP1603-ADJI/MC
• Description: IC SYNC BUCK REG .5A ADJ 8-DFN
• Manufacturer: Microchip Technology
• Type: Step-Down (Buck)r

Specifications of MCP1603-ADJI/MC

• Package / Case: 8-DFN
• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 4.5 V
• Current - Output: 500mA
• Frequency - Switching: 2MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Output Voltage: 0.8 V to 4.5 V
• Output Current: 500 mA
• Input Voltage: 2.7 V to 5.5 V
• Switching Frequency: 2 MHz
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 100 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP1603RD-TNY - REFERENCE DESIGN FOR MCP1603MCP1603EV - BOARD EVAL BUCK CONV MCP1603
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2.0
Note: Unless otherwise indicated, V
T
FIGURE 2-1:
FIGURE 2-2:
(V
FIGURE 2-3:
(V
© 2007 Microchip Technology Inc.
A
Note:
OUT
OUT
= +25°C. Adjustable or fixed output voltage options can be used to generate the Typical Performance Characteristics.
50
49
48
47
46
45
44
43
42
41
40
100
100
95
90
85
80
75
70
65
60
95
90
85
80
75
70
= 1.2V).
= 1.8V).
-40 -25 -10
TYPICAL PERFORMANCE CURVES
2.7
2.7
V
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein are
not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
IN
V
I
I
OUT
OUT
IN
= 4.2V
3.05
= 3.0V
3.05
= 100 mA
= 100 mA
I
OUT
I
OUT
= 300 mA
= 300 mA
Ambient Temperature (
3.4
3.4
5
V
IN
= 3.6V
I
Efficiency vs. Input Voltage
Efficiency vs. Input Voltage
20 35 50 65 80 95 110 125
Input Voltage (V)
Input Voltage (V)
Q
3.75
3.75
vs. Ambient Temperature.
4.1
4.1
4.45
4.45
IN
= SHDN = 3.6V, C
o
C)
4.8
4.8
I
I
OUT
OUT
V
V
V
OUT
OUT
= 500 mA
= 500 mA
OUT
5.15
5.15
= 1.2V
= 1.8V
= 1.8V
5.5
5.5
OUT
= C
IN
FIGURE 2-4:
FIGURE 2-5:
(V
FIGURE 2-6:
(V
= 4.7 µF, L = 4.7 µH, V
OUT
OUT
52
50
48
46
44
42
40
100
100
90
80
70
60
50
40
30
20
= 1.2V).
90
80
70
60
50
40
30
20
= 1.8V).
2.7
0.1
0.1
T
A
V
V
V
= +25
V
IN
IN
3.05
T
IN
IN
V
A
= 3.6V
= 3.6V
IN
= 4.2V
= 2.7V
= - 40
o
= 4.2V
C
V
3.4
IN
o
C
= 2.7V
1
1
Output Current (mA)
Output Current (mA)
Input Voltage (V)
I
Efficiency vs. Output Load
Efficiency vs. Output Load
3.75
OUT
Q
vs. Input Voltage.
(ADJ) = 1.8V, I
4.1
10
10
MCP1603
4.45
T
A
DS22042A-page 7
100
100
4.8
= +90
LOAD
V
V
OUT
OUT
o
C
5.15
= 1.8V
= 1.2V
= 100 mA,
1000
1000
5.5