参数资料
| 型号： | MAX8717ETI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/30页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR PWR SUP 28-TQFN |
| 标准包装： | 60 |
| 应用： | 控制器，笔记本电脑电源系统 |
| 输入电压： | 4 V ~ 26 V |
| 输出数： | 2 |
| 输出电压： | 3.3V，5V，1 V ~ 5.5 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 管件 |
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ATION
EVALU
AVAILA
19-3569; Rev 2; 4/07
KIT
BLE
Interleaved High-Efficiency, Dual Power-Supply
Controllers for Notebook Computers
General Description
The MAX8716/MAX8717/MAX8756/MAX8757 are dual,
step-down, interleaved, fixed-frequency, switch-mode
power-supply (SMPS) controllers with synchronous rec-
tification. The MAX8716/MAX8717/MAX8756/MAX8757
are intended for main (5V/3.3V) power generation, while
the MAX8756 is optimized for I/O power rails in battery-
powered systems.
Fixed-frequency operation with optimal interleaving min-
imizes input ripple current from the lowest input voltages
up to the 26V maximum input. Optimal 40/60 interleav-
ing allows the input voltage to go down to 8.3V before
duty-cycle overlap occurs in 5V/3.3V applications, com-
pared to 180° out-of-phase regulators where the duty-
cycle overlap occurs when the input drops below 10V.
Accurate output current limit is achieved using a sense
resistor. Alternatively, power dissipation can be
reduced using lossless inductor current sensing.
Independent ON/OFF controls and power-good signals
allow flexible power sequencing. Soft-start reduces
inrush current, while soft-stop gradually ramps the out-
put voltage down preventing negative voltage dips.
Features
o Fixed Switching Frequency
200kHz, 300kHz, or 500kHz
250kHz, 300kHz, or 400kHz (MAX8756 Only)
o No Current-Sense Resistor Required
o 40/60 Optimal Interleaving
o Reduced Input-Capacitor Requirement
o Output Voltage Fixed or Adjustable Outputs
(Dual Mode?)
3.3V/5V Fixed or 1V to 5.5V Adjustable
1.5V/1.8V Fixed or 1V to 2.3V Adjustable
(MAX8756 Only)
o 4V to 26V Input Range
o Independently Selectable PWM, Skip, and Low-
Noise Mode Operation
o Soft-Start and Soft-Stop
o 2V Precision Reference with 0.75% Accuracy
o Independent Power-Good Outputs
Ordering Information
A low-noise mode maintains high light-load efficiency
while keeping the switching frequency out of the audi-
ble range.
The MAX8716 is available in a 24-pin thin QFN pack-
age, and the MAX8717/MAX8756/MAX8757 are avail-
able in a 28-pin thin QFN package.
Applications
2 to 4 Li+ Cell Battery-Powered Devices
PART
MAX8716 ETG
MAX8716ETG+
MAX8717 ETI
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
24 Thin QFN
4mm x 4mm
24 Thin QFN
4mm x 4mm
28 Thin QFN
5mm x 5mm
PKG
CODE
T2444-4
T2444-4
T2855-6
Notebook and Subnotebook Computers
PDAs and Mobile Communicators
+Denotes a lead-free package.
Ordering Information continued at end of data sheet.
Main or I/O Power Supplies
Dual Mode is a trademark of Maxim Integrated Products, Inc.
Pin Configurations
TOP VIEW
TOP VIEW
18
17
16
15
14
13
21
20
19
18
17
16
15
DH1
22
14
DH2
DH1
19
12
DH2
BST1
CSH1
20
21
11
10
BST2
CSH2
BST1
CSH1
23
24
13
12
BST2
CSH2
CSL1
FB1
PGOOD1
22
23
24
MAX8716ETG
9
8
7
CSL2
FB2
PGOOD2
CSL1
FB1
PGOOD1
25
26
27
MAX8717ETI
MAX8756ETI+
MAX8757ETI+
11
10
9
CSL2
FB2
PGOOD2
+
1
2
3
4
5
6
ILIM1
28
8
ILIM2
+
1
2
3
4
5
6
7
TQFN
A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.
TQFN
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8717ETI+ | 功能描述:软开关 PWM 控制器 Dual Power-Supply Controller RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| MAX8717ETI+T | 功能描述:电流和电力监控器、调节器 Dual Power-Supply Controller RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX8717ETI-T | 功能描述:电流和电力监控器、调节器 RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX8717EVKIT | 制造商:Maxim Integrated Products 功能描述:HIGH-EFFICIENCY DUAL POWER-SUPPLY - Rail/Tube |
| MAX8718ETA | 制造商:Maxim Integrated Products 功能描述:HIGH-VOLTAGE LOW-POWER LINEAR REGU - Rail/Tube |
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