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參數(shù)資料
| 型號(hào)： | MAX8632ETI |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Quadruple 2-Input Positive-NAND Gates With Open-Drain Outputs 14-CDIP -55 to 125 |
| 中文描述： | 集成的DDR電源適用于臺(tái)式機(jī)，筆記本電腦解決方案和圖形卡 |
| 文件頁數(shù)： | 10/29頁 |
| 文件大?。?/td> | 512K |
| 代理商： | MAX8632ETI |
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M
Integrated DDR Power-Supply Solution for
Desktops, Notebooks, and Graphic Cards
10
______________________________________________________________________________________
Pin Description (continued)
PIN
11
12
NAME
PGND2
VTT
FUNCTION
Power Ground for VTT and VTTR. Connect PGND2 externally to the underside of the exposed pad.
Termination Power-Supply Output. Connect VTT to VTTS to regulate to V
REFIN
/ 2.
Power-Supply Input Voltage for VTT and VTTR. Normally connected to the output of the buck regulator
for DDR application.
13
VTTI
14
REFIN
External Reference Input. This is used to regulate the VTT and VTTR outputs to V
REFIN
/ 2.
15
FB
Feedback Input for Buck Output. Connect to AV
DD
for a +1.8V fixed output or to GND for a +2.5V fixed
output. For an adjustable output (0.7V to 5.5V), connect FB to a resistive divider from the output
voltage. FB regulates to +0.7V.
16
OUT
Output-Voltage Sense Connection. Connect to the positive terminal of the buck output filter capacitor.
OUT senses the output voltage to determine the on-time for the high-side switching MOSFET (Q1 in the
Typical Applications Circuit of Figure 8). OUT also serves as the buck output’s feedback input in fixed-
output modes. When discharge mode is enabled by OVP/UVP, the output capacitor is discharged
through an internal 10
resistor connected between OUT and GND. OUT also acts as the input to the
VTT and VTTR UVLO detector.
Input-Voltage Sense Connection. Connect to input power source. V
IN
is used only to set the PWM’s on-
time one-shot timer. IN voltage range is from 2V to 28V.
17
V
IN
18
DH
High-Side Gate-Driver Output. Swings from LX to BST. DH is low when in shutdown or UVLO.
19
LX
External Inductor Connection. Connect LX to the input side of the inductor. LX is used for both current
limit and the return supply of the DH driver.
20
BST
Boost Flying-Capacitor Connection. Connect to an external capacitor and diode according to the
Typical Applications Circuit
(Figure 8). See the
Boost-Supply Diode and Capacitor Selection
section.
21
DL
Synchronous-Rectifier Gate-Driver Output. Swings from PGND to V
DD
.
Supply Input for the DL Gate Drive. Connect to the +4.5V to +5.5V system supply voltage. Bypass to
PGND1 with a 1μF (min) ceramic capacitor.
22
V
DD
23
24
PGND1
GND
Power Ground for Buck Controller. Connect PGND1 externally to the underside of the exposed pad.
Analog Ground for Both Buck and LDO. Connect GND externally to the underside of the exposed pad.
25
SKIP
Pulse-Skipping Control Input. Connect to AV
DD
for low-noise, forced-PWM mode. Connect to GND to
enable pulse-skipping operation.
26
AV
DD
Analog Supply Input for Both Buck and LDO. Connect to the +4.5V to +5.5V system supply voltage
with a series 10
resistor. Bypass to GND with a 1μF or greater ceramic capacitor.
27
SHDN
Shutdown Control Input. Use to control buck output. A rising edge on
SHDN
clears the overvoltage-
and undervoltage-protection fault latches (see Tables 2 and 3). Connect to AV
DD
for normal operation.
This is a test pin. Must connect to GND externally.
28
TP0
—
EP
Exposed pad. The exposed pad must be star-connected to GND and PGND2. See
Special Layout
Considerations for LDO Section
for more details.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8632ETI+ | 功能描述:PMIC 解決方案 DDR Power-Supply Solution RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX8632ETI+T | 功能描述:PMIC 解決方案 DDR Power-Supply Solution RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX8632ETI+TGD2 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8632EVKIT | 功能描述:電源管理IC開發(fā)工具 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| MAX8633ELA+ | 制造商:Maxim Integrated Products 功能描述: |
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