Datasheet

MCP73837/8
DS22071B-page 10 © 2007-2011 Microchip Technology Inc.
Note: Unless otherwise indicated, V
DD
= [V
REG
(typical) + 1V], I
OUT
= 30 mA and T
A
= +25°C, Constant-voltage mode.
FIGURE 2-13: Charge Current (I
OUT
) vs.
Junction Temperature (T
J
).
FIGURE 2-14: Charge Current (I
OUT
) vs.
Junction Temperature (T
J
).
FIGURE 2-15: Thermistor Current (I
THERM
)
vs. Supply Voltage (V
DD
).
FIGURE 2-16: Thermistor Current (I
THERM
)
vs. Ambient Temperature (T
A
).
FIGURE 2-17: Power Supply Ripple
Rejection (PSRR).
FIGURE 2-18: Power Supply Ripple
Rejection (PSRR).
0
50
100
150
200
250
300
350
400
450
500
550
600
25 35 45 55 65 75 85 95
105 115 125 135 145 155
Junction Temperature (°C)
Charge Current (mA)
R
PROG
= 2 kΩ
0
10
20
30
40
50
60
70
80
90
100
110
120
25 35 45 55 65 75 85 95
105 115 125 135 145 155
Junction Temperature (°C)
Charge Current (mA)
R
PROG
= 10 kΩ
47.0
47.5
48.0
48.5
49.0
49.5
50.0
50.5
51.0
51.5
52.0
4.5 4.8 5.0 5.3 5.5 5.8 6.0
Supply Voltage (V)
Thermistor Current (mA)
Temp = +25°C
47.0
47.5
48.0
48.5
49.0
49.5
50.0
50.5
51.0
51.5
52.0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90
Ambient Temperature (°C)
Thermistor Current (mA)
V
DD
= 5.2V
-70
-60
-50
-40
-30
-20
-10
0
0.01 0.1 1 10 100 1000
Frequency (kHz)
Attenuation (dB)
I
OUT
= 10 mA
C
OUT
= 4.7 µF
-70
-60
-50
-40
-30
-20
-10
0
0.01 0.1 1 10 100 1000
Frequency (kHz)
Attenuation (dB)
I
OUT
= 100 mA
C
OUT
= 4.7 µF