MCP1603 查看數據表（PDF） - Microchip Technology
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MCP1603 Datasheet PDF : 34 Pages
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MCP1603/B/L
Note: Unless otherwise indicated, MCP1603/L, VIN = SHDN = 3.6V, COUT = CIN = 4.7 µF, L = 4.7 µH,
VOUT(ADJ) = 1.8V, ILOAD = 100 mA, TA = +25°C. Adjustable or fixed output voltage options can be used to generate the
Typical Performance Characteristics.
100.0
97.5
95.0
IOUT = 100 mA
VOUT = 3.3V
IOUT = 300 mA
92.5
90.0
87.5
IOUT = 500 mA
85.0
3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5
Input Voltage (V)
FIGURE 2-13:
(VOUT = 3.3V).
Efficiency vs. Input Voltage
100
90
80
VIN = 3.6V
70
60
50
VIN = 4.2V
40
30
VOUT = 3.3V
20
PFM/PWM
PWM Only
10
0
0.1
1
10
100
1000
Output Current (mA)
FIGURE 2-14:
Efficiency vs. Output Load
(VOUT = 3.3V).
10
9
8
Regulation
7
6
5
TA= +25oC
4
TA= -40oC
3
TA= +85oC
2
No Regulation
1
0
1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6
VIN - VOUT (V)
FIGURE 2-15:
PWM-Only Device Minimum
Load for Regulation (MCP1603B).
2.20
2.15
2.10
2.05
2.00
1.95
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ambient Temperature (oC)
FIGURE 2-16:
Switching Frequency vs.
Ambient Temperature.
2.20
2.15
2.10
2.05
2.00
1.95
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
Input Voltage (V)
FIGURE 2-17:
Input Voltage.
Switching Frequency vs.
0.65
0.60
0.55
0.50
0.45
P-Channel
N-Channel
0.40
0.35
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
Input Voltage (V)
FIGURE 2-18:
Voltage.
Switch Resistance vs. Input
2007-2012 Microchip Technology Inc.
DS22042B-page 9
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