MAX1722 查看數據表（PDF） - Maxim Integrated
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MAX1722 Datasheet PDF : 12 Pages
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1.5µA IQ, Step-Up DC-DC Converters
in Thin SOT23-5
Typical Operating Characteristics (continued)
(Figure 3 (MAX1723), Figure 7 (MAX1722), Figure 8 (MAX1724), VBATT = VIN = 1.5V, L = 10µH, CIN = 10µF, COUT = 10µF, TA = +25°C,
unless otherwise noted.)
LOAD-TRANSIENT RESPONSE
SHUTDOWN RESPONSE
3.3V
5V
A
VOUT
2V/div
50mA
0
200µs/div
A: VOUT, 50mV/div
B: IOUT, 20mA/div
0
2V
B
0
VSHDN
1V/div
1ms/div
VIN = 3.3V, VOUT = 5.0V, ROUT = 100Ω
MAX1722
1
—
2
PIN
MAX1723
—
1
2
MAX1724
1
3
2
3
3
—
4
4
4
5
5
5
SHUTDOWN INPUT THRESHOLD
vs. TEMPERATURE
0.8
0.7
0.6
RISING EDGE
0.5
0.4
FALLING EDGE
0.3
0.2
0.1
0
-40 -15
10
35
60
85
TEMPERATURE (°C)
Pin Description
NAME
BATT
SHDN
GND
FB
OUT
LX
FUNCTION
Battery Input and Damping Switch Connection
Shutdown Input. Drive high for normal operation. Drive low for shutdown.
Ground
Feedback Input to Set Output Voltage. Use a resistor-divider network to
adjust the output voltage. See Setting the Output Voltage section.
Power Output. OUT also provides bootstrap power to the IC.
Internal N-channel MOSFET Switch Drain and P-Channel Synchronous
Rectifier Drain
_______________________________________________________________________________________ 5
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