參數(shù)資料
型號(hào)： MAX1917
廠(chǎng)商： Maxim Integrated Products, Inc.
英文描述： Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies
中文描述： 跟蹤、可吸入/源出電流、同步buck控制器，用于DDR存儲(chǔ)器及端接電源
文件頁(yè)數(shù)： 3/18頁(yè)
文件大?。?/td> 336K
代理商： MAX1917
M
Tracking, Sinking and Sourcing, Synchronous Buck
Controller for DDR Memory and Termination Supplies
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 12V, V
EN/HSD
= V
DDR
= 2.5V, C
VL
= 4.7μF, C
VTTR
= 1μF, C
REF
= 0.22μF, V
FSEL
= 0, ILIM = VL, PGND = LX = POK = GND,
BST = VL. Specifications are for
T
A
= 0
°
C to +85
°
C
. Typical values are at T
A
= +25
°
C, unless otherwise specified.)
PARAMETER
CONDITIONS
MIN
TYP
+160
MAX
UNITS
°
C
Thermal Shutdown
SOFT-START
Rising temperature, typical hysteresis = 15
°
C
ILIM Ramp Period
Ramps the ILIM trip threshold from 20% to 100%
in 20% increments
1.7
ms
OSCILLATOR
FSEL = VL
FSEL = unconnected
FSEL = REF
FSEL = GND
FSEL = VL
FSEL not connected
FSEL = REF
FSEL = GND
200
300
400
550
2.5
1.67
1.25
0.91
350
Oscillator Frequency
kHz
2.18
1.45
1.09
0.82
2.83
1.89
1.41
1.00
400
On Time (Note 1)
μs
Minimum Off Time (Note 1)
CURRENT LIMIT
ns
LX to PGND, ILIM = VL
LX to PGND, R
ILIM
= 100k
LX to PGND, R
ILIM
= 400k
LX to PGND, ILIM = VL, with percentage of positive
current-limit threshold
90
40
170
100
50
200
110
60
230
Current-Limit Threshold
(Positive Direction)
mV
Current-Limit Threshold
(Negative Direction)
-90
-110
-130
%
ILIM Input Current
V
L
REGULATOR
5
μA
Output Voltage
5.5V < V+ < 14V
1mA < I
VL
< 35mA
5.5V < V+ < 14V, I
VL
= 10mA
4.8
5.0
5.2
V
Line Regulation
RMS Output Current
Bypass Capacitor
DRIVER
DH Gate-Driver On-Resistance
DL Gate-Driver On-Resistance
(Source)
0.2
%
mA
μF
35
ESR < 100m
2.2
V
BST
- V
LX
= 5V
1.4
2.5
DL high state
1.6
3
DL Gate-Driver On-Resistance
(Sink)
DL low state
0.75
1.25
DL rising
DL falling
32
30
Dead Time
ns
FSEL LOGIC
Logic Input Current
Logic GND Level
Logic REF Level
Logic Float Level
-3
3
μA
V
V
V
0.5
2.35
3.85
FSEL = VREF
FSEL floating
1.65
3.15
相關(guān)PDF資料
PDF描述
MAX1917EEE Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies
MAX1920 Low-Voltage, 400mA Step-Down DC-DC Converters in SOT23
MAX1921 Low-Voltage, 400mA Step-Down DC-DC Converters in SOT23
MAX1921EUT PLASTIC ENCAPSULATED DEVICES
MAX1920EUT-T Low-Voltage, 400mA Step-Down DC-DC Converters in SOT23
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1917EEE 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1917EEE+ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Track/Sink/Source Synchronous Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1917EEE+T 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Track/Sink/Source Synchronous Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1917EEE-T 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1917EEE-TG068 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*