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| 型号： | MAX17003ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/36页 |
| 文件大小： | 0K |
| 描述： | IC PS CTRLR FOR NOTEBOOKS 32TQFN |
| 标准包装： | 60 |
| 应用： | 控制器，笔记本电脑电源系统 |
| 输入电压： | 6 V ~ 26 V |
| 输出数： | 4 |
| 输出电压： | 3.3V，5V，2 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 管件 |
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ATION
EVALU
AVAIL
19-0765; Rev 0; 3/07
KIT
ABLE
High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
General Description
Features
The MAX17003/MAX17004 are dual step-down, switch-
mode, power-supply (SMPS) controllers with synchro-
nous rectification, intended for main 5V/3.3V power
generation in battery-powered systems. Fixed-frequen-
cy operation with optimal interleaving minimizes input
ripple current from the lowest input voltages up to the
26V maximum input. Optimal 40/60 interleaving allows
the input voltage to go down to 8.3V before duty-cycle
overlap occurs, compared to 180° out-of-phase regula-
tors where the duty-cycle overlap occurs when the
input drops below 10V.
Output current sensing provides peak current-limit pro-
tection, using either an accurate sense resistor or using
lossless inductor DCR current sensing. A low-noise
mode maintains high light-load efficiency while keeping
the switching frequency out of the audible range.
An internal, fixed 5V, 100mA linear regulator powers up
the MAX17003/MAX17004 and their gate drivers, as well
as external keep-alive loads. When the main PWM regu-
lator is in regulation, an automatic bootstrap switch
bypasses the internal linear regulator, providing current
up to 200mA. An additional adjustable linear-regulator
o
o
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o
o
o
o
o
o
o
o
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Fixed-Frequency, Current-Mode Control
40/60 Optimal Interleaving
Internal BST Switches
Internal 5V, 100mA Linear Regulator
Auxiliary Linear-Regulator Driver (12V or
Adjustable Down to 1V)
Dual Mode? Feedback—3.3V/5V Fixed or
Adjustable Output Voltages
200kHz/300kHz/500kHz Switching Frequency
Undervoltage and Thermal-Fault Protection
Overvoltage-Fault Protection (MAX17003 Only)
6V to 26V Input Range
2V ±0.75% Reference Output
Independent Enable Inputs and Power-Good
Outputs
Soft-Start and Soft-Discharge (Voltage Ramp)
8μA (typ) Shutdown Current
Ordering Information
driver with an external pnp transistor may be used with a
secondary winding to provide a 12V supply, or powered
directly from the main outputs to generate low-voltage
outputs as low as 1V.
PART
MAX17003 ETJ+
TEMP RANGE
-40°C to +85°C
PIN-
PACKAGE
32 Thin QFN
(5mm x 5mm)
PKG
CODE
T3255-4
Independent enable controls and power-good signals
allow flexible power sequencing. Voltage soft-start grad-
ually ramps up the output voltage and reduces inrush
current, while soft-discharge gradually decreases the
MAX17004 ETJ+ -40°C to +85°C
+Denotes lead-free package.
32 Thin QFN
(5mm x 5mm)
T3255-4
output voltage, preventing negative voltage dips. The
MAX17003/MAX17004 feature output undervoltage and
thermal-fault protection. The MAX17003 also includes
output overvoltage-fault protection.
The MAX17003/MAX17004 are available in a 32-pin,
TOP VIEW
Pin Configuration
5mm x 5mm, thin QFN package. The exposed backside
24
23
22
21
20
19
18
17
pad improves thermal characteristics for demanding
linear keep-alive applications.
Applications
DH3 25
BST3 26
DSCHG3 27
16
15
14
DH5
BST5
DSCHG5
Main Power Supplies
2 to 4 Li+ Cell Battery-Powered Devices
Notebook and Subnotebook Computers
PDAs and Mobile Communicators
CSL3 28
CSH3 29
FB3 30
FBA 31
OUTA 32
+
MAX17003
MAX17004
13
12
11
10
9
CSL5
CSH5
FB5
SKIP
FSEL
1
2
3
4
5
6
7
8
Dual Mode is a trademark of Maxim Integrated Products, Inc.
THIN QFN
5mm x 5mm
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17003ETJ+ | 功能描述:电压模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17003ETJ+T | 功能描述:电压模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| 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:电压模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17004ETJ+T | 功能描述:电压模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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