MAX17101 查看數據表（PDF） - Maxim Integrated
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MAX17101 Datasheet PDF : 31 Pages
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Dual Quick-PWM, Step-Down Controller
with Low-Power LDO, RTC Regulator
Typical Operating Characteristics (continued)
(Circuit of Figure 1, VIN = 12V, VDD = VCC = 5V, TON = REF, TA = +25°C, unless otherwise noted.)
STANDBY AND SHUTDOWN INPUT
SUPPLY CURRENT vs. INPUT VOLTAGE
1
STANDBY (ONLDO = VIN)
0.1
0.01
0
SHUTDOWN
(ONLDO = ON1 = ON2 = GND)
5
10 15
20
25
INPUT VOLTAGE (V)
LDO AND RTC POWER-UP
MAX17101 toc11
LDO AND RTC POWER REMOVAL
MAX17101 toc12
12V
A
12V
12V
A
B
12V
5V
5V
0V
0V
C
3.3V 3.3V
D
B
5V
0V
2.0V
2V
C
3.3V
0V
D
2.0V
200μs/div
A. INPUT SUPPLY, 5V/div C. 3.3V RTC, 2V/div
B. 5V LDO, 2V/div
D. 2.0V REF, 1V/div
200μs/div
A. INPUT SUPPLY, 5V/div C. 3.3V RTC, 2V/div
B. 5V LDO, 2V/div
D. 2.0V REF, 1V/div
5V LDO LOAD TRANSIENT
MAX17101 toc13
5V SMPS STARTUP AND SHUTDOWN
MAX17101 toc14
A
5V
5V
5V
A
5V
B
5V
0.1A
0V
0A
B 5V
C
0V
A. LDO OUTPUT,
100mV/div
4μs/div
B. LOAD CURRENT,
100mA/div
200μs/div
A. 5V LDO OUTPUT, 0.2V/div
B. 5V SMPS OUTPUT, 2V/div
C. ON1, 5V/div
STARTUP WAVEFORMS
(SWITCHING REGULATORS)
MAX17101 toc15
5V
A
0V
B
5V
5V
5V
0V
C
0V
0A
D
100μs/div
A. ON1, 2V/div
C. PGOOD1, 5V/div
B. 5V SMPS OUTPUT, D. INDUCTOR CURRENT,
2V/div
5A/div
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