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參數(shù)資料
| 型號(hào)： | MAX1970 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual, 180∑ Out-of-Phase, 1.4MHz, 750mA Step- Down Regulator with POR and RSI/PFO |
| 中文描述： | 雙路、180°異相、1.4MHz、750mA、降壓型調(diào)節(jié)器，帶有POR和RSI/PFO |
| 文件頁(yè)數(shù)： | 10/20頁(yè) |
| 文件大小： | 371K |
| 代理商： | MAX1970 |
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M
Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-
Down Regulator with POR and RSI/PFO
10
______________________________________________________________________________________
5ms/div
5V/div
M
SHUTDOWN RESPONSE
POR
EN
V
OUT1
V
OUT2
MAX1970
V
IN
= 5V
V
OUT1
= 3.3V, V
OUT2
= 2.5V
I
OUT1
= 375mA, I
OUT2
= 375mA
Typical Operating Characteristics (continued)
(T
A
= +25
°
C, unless otherwise noted.)
NAME
PIN
MAX1970/MAX1972
LX1
V
CC
MAX1971
LX1
V
CC
FUNCTION
1
2
Inductor Connection 1. Connect an inductor between LX1 and OUT1.
Analog Supply Voltage. Bypass with 0.1μF to ground.
3
COMP1
COMP1
OUT1 Regulator Compensation. Connect series RC network from COMP1 to GND.
COMP1 is pulled to GND when the outputs are shut down. See the
Compensation
Design
section for component values.
4
FB1
FB1
OUT1 Feedback. Connected to OUT1 for internal mode (FBSEL1 = GND or V
CC
).
Use an external resistor-divider from OUT1 to GND to set the output voltage from
1.2V to V
IN
for external mode (FBSEL1 = unconnected). See the
Output Voltage
Selection
section for <1.2V output.
5
FB2
FB2
OUT2 Feedback. Connected to OUT2 for internal mode (FBSEL2 = GND or V
CC
).
Use an external resistor-divider from OUT2 to GND to set the output voltage from
1.2V to V
IN
for external mode (FBSEL2 = unconnected). See the
Output Voltage
Selection
section for <1.2V output.
6
COMP2
COMP2
OUT2 Regulator Compensation. Connect series RC network from COMP2 to GND.
COMP2 is pulled to GND when the outputs are shut down. See the
Compensation
Design
section for component values.
7
REF
REF
Reference. Bypass with 0.01μF to 1.0μF capacitor. REF controls the soft-start
ramp and is pulled to GND when the outputs are shut down.
8
GND
GND
Ground
Pin Description
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1970EEE | Fixed-Point Digital Signal Processor 532-FCBGA |
| MAX1971 | Fixed-Point Digital Signal Processor 532-FCBGA |
| MAX1972 | Dual, 180∑ Out-of-Phase, 1.4MHz, 750mA Step- Down Regulator with POR and RSI/PFO |
| MAX1972EEE | Fixed-Point Digital Signal Processor 532-FCBGA |
| MAX1973 | Smallest 1A, 1.4MHz Step-Down Regulators |
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