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参数资料
| 型号： | MAX17004AETJ+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 3.3 A DUAL SWITCHING CONTROLLER, 575 kHz SWITCHING FREQ-MAX, QCC32 |
| 封装： | 5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WHHD-2, QFN-32 |
| 文件页数： | 1/36页 |
| 文件大小： | 611K |
| 代理商： | MAX17004AETJ+ |
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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.
General Description
The MAX17003A/MAX17004A are dual step-down,
switch-mode, power-supply (SMPS) controllers with
synchronous rectification, intended for main 5V/3.3V
power generation in battery-powered systems. Fixed-
frequency 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
regulators 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 MAX17003A/MAX17004A and their gate drivers, as
well as external keep-alive loads. When the main PWM
regulator is in regulation, an automatic bootstrap switch
bypasses the internal linear regulator, providing current
up to 200mA. An additional adjustable linear-regulator
driver with an external pnp transistor can 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.
Independent enable controls and power-good signals
allow flexible power sequencing. Voltage soft-start
gradually ramps up the output voltage and reduces
inrush current, while soft-discharge gradually decrease
the output voltage, preventing negative voltage dips.
The MAX17003A/MAX17004A feature output undervolt-
age and thermal-fault protection. The MAX17003A also
includes output overvoltage-fault protection.
The MAX17003A/MAX17004A are available in a 32-pin,
5mm x 5mm thin QFN package. The exposed backside
pad improves thermal characteristics for demanding
linear keep-alive applications.
Applications
Main Power Supplies
2 to 4 Li+ Cell Battery-Powered Devices
Notebook and Subnotebook Computers
PDAs and Mobile Communicators
Features
o Fixed-Frequency, Current-Mode Control
o 40/60 Optimal Interleaving
o Internal BST Switches
o Internal 5V, 100mA Linear Regulator
o Auxiliary Linear-Regulator Driver (12V or
Adjustable Down to 1V)
o Dual Mode Feedback—3.3V/5V Fixed or
Adjustable Output Voltages
o 200kHz/300kHz/500kHz Switching Frequency
o Undervoltage and Thermal-Fault Protection
o Overvoltage-Fault Protection (MAX17003A Only)
o 6V to 26V Input Range
o 2V ±0.75% Reference Output
o Independent Enable Inputs and Power-Good
Outputs
o Soft-Start and Soft-Discharge (Voltage Ramp)
o 8A (typ) Shutdown Current
MAX17003A/MAX17004A
High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
________________________________________________________________
Maxim Integrated Products
1
19-0837; Rev 0; 6/07
+
Denotes a lead-free package.
MAX17003A
MAX17004A
THIN QFN
5mm x 5mm
TOP VIEW
29
30
28
27
12
11
13
DRVA
SHDN
ON3
ON5
REF
14
ONA
DL3
IN
LDO5
LX3
PGND
DL5
12
+
CSL3
45
6
7
23
24
22
20
19
18
CSH3
FB3
DSCHG5
CSL5
CSH5
FB5
ILIM
PGDALL
3
21
31
10
FBA
SKIP
32
9
OUTA
FSEL
DSCHG3
26
15
BST5
BST3
25
16
DH5
GND
LX5
8
17
DH3
Pin Configuration
Ordering Information
PART
TEMP
RANGE
PIN-PACKAGE
PKG
CODE
MAX17003AETJ+
-40°C to
+85°C
32 Thin QFN
(5mm x 5mm)
T3255-4
MAX17004AETJ+
-40°C to
+85°C
32 Thin QFN
(5mm x 5mm)
T3255-4
Dual Mode is a trademark of Maxim Integrated Products, Inc.
EVALUATION
KIT
AVAILABLE
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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: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 |
| MAX17005AETP+ | 功能描述:电池管理 1.2MHz High-Perf Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX17005AETP+T | 功能描述:电池管理 1.2MHz High-Perf Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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