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參數(shù)資料
| 型號： | MAX750A-MAX758A |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Adjustable, Step-Down, Current-Mode PWM Regulators |
| 中文描述： | 可調(diào)，降壓，電流模式PWM穩(wěn)壓器 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大小： | 206K |
| 代理商： | MAX750A-MAX758A |
M
Adjustable, S tep-Down,
Current-Mode PWM Regulators
______________________________________________________________________________________
11
OUTPUT
5V
MAX750A: 4.0V TO11.0V
MAX758A: 4.0V TO16.0V
LX
CC
GND
6
SS
MAX750A
MAX758A
SHDN
V+
REF
2
L1
*
I.C.
1
3
7
5
4
C6
0.01μF
C2
1μF
C3
*
D1
IN5817
C5
330pF
R3
13.0k
C4
*
8
R1
510k
C1
0.1μF
FILTER
OUTPUT
L2
25μF
C7
2.2μF
OUTPUT
OPTIONAL LOWPASS OUTPUT FILTER
INPUT SUPPLY RANGE
(V)
6.0 to 11.0
6.0 to 16.0
10.2 to 16.0
PART
MAX750A
MAX758A
GUARANTEED OUTPUT CURRENT AT 5V OUTPUT
(mA)
450
450
750
NOTE:
PIN NUMBERS REFER TO8-PIN PACKAGES.
R2
40.2k
*
SEE TABLE 2 FOR EXTERNAL COMPONENT SUPPLIERS.
Figure 3. Standard Step-Down Circuit
and GND pins as possible
. Also, place the output
capacitor as close to the inductor and the GND pin as
possible. The traces connecting the input and output
filter capacitors and the catch diode must be short to
minimize inductance and capacitance. For this reason,
avoid using sockets, and solder the IC directly to the
PC board. Use an uninterrupted ground plane if possi-
ble; otherwise, use a star ground connection.
Output-Ripple Filtering
A simple lowpass pi-filter (Figure 3) can be added to
the output to reduce output ripple to about 5mVp-p.
The cutoff frequency with the values shown is 21kHz.
Since the filter inductor is in series with the circuit out-
put, its resistance should be kept to a minimum so the
voltage drop across it is not excessive.
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| MAX750AMJA | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX750CPA | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX750CSA | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX750CSA-T | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX750EPA | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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