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參數(shù)資料
| 型號： | MAX1971EEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Fixed-Point Digital Signal Processor 532-FCBGA |
| 中文描述： | 0.75 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | QSOP-16 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 371K |
| 代理商： | MAX1971EEE |
M
turns off and the internal low-side N-channel MOSFET
turns on. Now the inductor releases the stored energy
as its current ramps down while still providing current to
the output. The output capacitor stores charge when
the inductor current exceeds the load current and dis-
charges when the inductor current is lower, smoothing
the voltage across the load. Under overload conditions,
when the inductor current exceeds the current limit (see
the
Current Limit
section), the high-side MOSFET is not
turned on at the rising edge of the clock and the low-
side MOSFET remains on to let the inductor current
ramp down.
Current Sense
The current-sense circuit amplifies the current-sense
voltage generated by the high-side MOSFET
’
s on-resis-
tance and the inductor current (R
DS(ON)
I
INDUCTOR
).
This amplified current-sense signal and the internal
slope compensation signal are summed together into
Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-
Down Regulator with POR and RSI/PFO
12
______________________________________________________________________________________
Figure 1. Functional Diagram
FB
SELECT
PWM CONTROL
LX1
PGND
RSI
PFO
POR
MAX1970/MAX1972 ONLY
MAX1971 ONLY
CLAMP
ERROR SIGNAL
REGULATOR 1
REGULATOR 2
FB1
IN
FBSEL1
COMP1
REF
EN
COMP2
FB2
FBSEL2
GND
SLOPE COMP
CURRENT SENSE
SOFT-START
THERMAL SHUTDOWN
VOK
REFERENCE
VOLTAGE
1.2V
÷
2(MAX1970/
MAX1972)/
÷
4(MAX1971)
2.8MHz
OSCILLATOR
POR
PFO
V
CC
MAX1970
MAX1971
MAX1972
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1970-MAX1972 | Dual, 180∑ Out-of-Phase, 1.4MHz, 750mA Step- Down Regulator with POR and RSI/PFO |
| MAX1970 | Dual, 180∑ Out-of-Phase, 1.4MHz, 750mA Step- Down Regulator with POR and RSI/PFO |
| 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 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1971EEE+ | 功能描述:直流/直流開關調節(jié)器 Dual 180 Out 1.4MHz 750mA Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX1971EEE+T | 功能描述:直流/直流開關調節(jié)器 Dual 180 Out 1.4MHz 750mA Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX1971EEE-T | 功能描述:直流/直流開關調節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX1972EEE | 功能描述:直流/直流開關調節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX1972EEE+ | 功能描述:直流/直流開關調節(jié)器 Dual 180 Out 1.4MHz 750mA Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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