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參數(shù)資料
| 型號： | MAX17004AETJ+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.3 A DUAL SWITCHING CONTROLLER, 575 kHz SWITCHING FREQ-MAX, QCC32 |
| 封裝： | 5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WHHD-2, QFN-32 |
| 文件頁數(shù)： | 11/36頁 |
| 文件大小： | 611K |
| 代理商： | MAX17004AETJ+ |
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MAX17003A/MAX17004A
High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
______________________________________________________________________________________
19
Output Discharge (Soft-Discharge)
When the switching regulators are disabled—when ON_
or SHDN is pulled low, or when an output undervoltage
fault occurs—the internal soft-discharge gradually
decreases the output voltage by pulling DSCHG_ low
(see the SMPS Shutdown Waveform in the
Typical
Operating Characteristics). This slowly discharges the
output capacitance, eliminating the negative output
voltages caused by quickly discharging the output
through the inductor and low-side MOSFET. Both SMPS
controllers contain separate soft-shutdown circuits.
Fixed-Frequency, Current-Mode
PWM Controller
The heart of each current-mode PWM controller is a
multi-input, open-loop comparator that sums two sig-
nals: the output-voltage error signal with respect to the
reference voltage and the slope-compensation ramp
(Figure 3). The MAX17003A/MAX17004A use a direct-
summing configuration, approaching ideal cycle-to-
cycle control over the output voltage without a
traditional error amplifier and the phase shift associated
with it.
S
R
Q
R
S
Q
DH DRIVER
DL DRIVER
SLOPE COMP
SOFT-START
PEAK CURRENT
LIMIT
FSEL
FROM FB
(SEE FIGURE 5)
REF
CSL_
CSH_
IDLE MODE
CURRENT
0.1 x VLIMIT
OUTA
DRVA
ONE-SHOT
PGND
GND
ON_
NEG CURRENT
LIMIT
ZERO
CROSSING
ILIM
A = 1/10
A = 1.2
OSC
TRI-LEVEL
DECODE
5V SMPS ONLY
0.2 x VLIMIT
SKIP
Figure 3. PWM Controller Functional Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX17004AETJ+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX17004ETJ+ | 功能描述:電壓模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX17004ETJ+T | 功能描述:電壓模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX17005AETP+ | 功能描述:電池管理 1.2MHz High-Perf Charger RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX17005AETP+T | 功能描述:電池管理 1.2MHz High-Perf Charger RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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