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MAX1672 Datasheet, PDF (4/12 Pages) Maxim Integrated Products – Step-Up/Down DC-DC Converter in QSOP Package
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Step-Up/Down DC-DC Converter
in QSOP Package
_____________________________Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
MAXIMUM OUTPUT CURRENT vs.
INPUT VOLTAGE (VOUT = 5V)
400
MAXIMUM RECOMMENDED
OUTPUT CURRENT
300
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE (VOUT = 3.3V)
400
MAXIMUM RECOMMENDED
OUTPUT CURRENT
300
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
(POWER DISSIPATION LIMIT)
400
MAXIMUM RECOMMENDED
OUTPUT CURRENT
300
VOUT = 5V
ILIM = PS (0.8A)
200
ILIM = GND (0.5A)
100
0
0
1
2
3
4
INPUT VOLTAGE (V)
NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
1000
VOUT = 5V
ILIM = PS (0.8A)
200
ILIM = GND (0.5A)
100
0
0
1
2
3
4
INPUT VOLTAGE (V)
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
1
200
VOUT = 3.3V
100
0
4
VOUT = 5V
TA = +25°C
TA = +85°C
VOUT = 3.3V
5 6 7 8 9 10 11 12
INPUT VOLTAGE (V)
LINEAR REGULATOR POWER-SUPPLY
REJECTION RATIO vs. FREQUENCY
70
60
50
100
0.1
40
VOUT = 3.3V
30
10
0 1 2 3 4 5 6 7 8 9 10 11
INPUT VOLTAGE (V)
0.01
0 1 2 3 4 5 6 7 8 9 10 11
INPUT VOLTAGE (V)
20
10
0.01
0.1
1
10 100 1000
FREQUENCY (kHz)
LINE-TRANSIENT RESPONSE
MAX1672-10
LOAD-TRANSIENT RESPONSE
MAX1672-11
OUTPUT RIPPLE (MEDIUM LOAD)
MAX1672-12
A
A
A
B
B
B
2ms/div
A: VOUT = 5V (100mV/div, AC COUPLED)
B: VIN = 2V TO 4V (IOUT = 100mA)
2ms/div
A: VOUT = 5V (50mV/div, AC COUPLED)
B: IOUT = 10mA TO 100mA (VIN = 2V)
10µs/div
A: VOUT = 5V (20mV/div, AC COUPLED)
B: IL1 (500mA /div) (VIN = 2.7V, IOUT = 80mA)
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