MAX848 データシートの表示（PDF） - Maxim Integrated
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MAX848 Datasheet PDF : 16 Pages
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1-Cell to 3-Cell, High-Power,
Low-Noise, Step-Up DC-DC Converters
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
HEAVY-LOAD SWITCHING WAVEFORMS
(VOUT = 3.3V)
MAX848/9 TOC-10
LINE-TRANSIENT RESPONSE
MAX848/9 TOC-11
VOUT
A
0V
A
B
0V
0A
C
B
1µs/div
VIN = 1.1V, IOUT = 200mA, VOUT = 3.3V
A = LX VOLTAGE, 2V/div
B = INDUCTOR CURRENT, 0.5A/div
C = VOUT RIPPLE, 50mV/div, AC COUPLED
5ms/div
IOUT = 0mA, VOUT = 3.3V
A = VIN, 1.1V TO 2.1V, 1V/div
B = VOUT RIPPLE, 50mV/div, AC COUPLED
LOAD-TRANSIENT RESPONSE
MAX848/9 TOC-12
A
B
2ms/div
VIN = 1.1V, VOUT = 3.3V
A = LOAD CURRENT, 0mA TO 200mA, 0.2A/div
B = VOUT RIPPLE, 50mV/div, AC COUPLED
200mA
0A
POWER-ON DELAY
(PFM MODE)
MAX848/9 TOC-13
3.3V
A
B
C
0mA
5ms/div
A = VON1, 2V/div
B = VOUT, 1V/div
C = INPUT CURRENT, 0.2A/div
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