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| 型号： | MAX17007GTI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/35页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR QPWM GRAPHICS 28TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | Quick-PWM™ |
| 应用： | 电源 |
| 电流 - 电源： | 1.7mA |
| 电源电压： | 4.5 V ~ 26 V |
| 工作温度： | -40°C ~ 105°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（4x4） |
| 包装： | 带卷 (TR) |
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19-3200; Rev 0; 2/08
ATION
ILABLE
EVALU
AVA
KIT
Dual and Combinable QPWM Graphics
Core Controllers for Notebook Computers
General Description
The MAX17007/MAX17008 are dual Quick-PWM? step-
down controllers intended for general power generation
in battery-powered systems. The two switched-mode
power supplies (SMPSs) can also be combined to oper-
ate in a two-phase single-output mode. Constant on-
time Quick-PWM operation provides fast response to
load transients and handles wide input/output (I/O) volt-
age ratios with ease, while maintaining a relatively con-
stant switching frequency. The switching frequency can
be individually adjusted between 200kHz and 600kHz
with external resistors. Differential output current sens-
ing allows output sense-resistor sensing for an accurate
current limit, or lossless inductor direct-current resis-
tance (DCR) current sensing for lower power dissipation
while maintaining 0.7% output accuracy. Overvoltage
(MAX17007 only), undervoltage protection, and accu-
rate user-selectable current limits (15mV, 30mV, 45mV,
and 60mV) ensure robust operations.
The SMPS outputs can operate in skip mode or in ultra-
sonic mode for improved light-load efficiency. The ultra-
sonic mode eliminates audible noises by maintaining a
minimum switching frequency of 25kHz in pulse-
skipping mode.
The output voltage of SMPS1 can be dynamically
adjusted by changing the voltage at the REFIN1 pin.
The device includes a 0.5% accurate reference output
that can be used to set the REFIN1 voltage. An external
Features
o Dual Quick-PWM with Fast Transient Response
o Automatic Dynamic REFIN1 Detection and
PGOOD1/Fault Blanking
o Fixed and Adjustable Output Voltages
0.7% Output Accuracy Over Line and Load
OUT1: 0 to 2V Dynamic Output or Preset 1.05V
OUT2: 0.7V to 2V Range or Preset 1.5V
o Resistor-Programmable Switching Frequency
o Integrated BST Switches
o Differential Current-Sense Inputs
Low-Cost DCR Sensing or Accurate Current-
Sense Resistors
Internally Coupled Current-Sense Compensation
o Combinable Mode Supports High-Current
Dynamic Output Voltages
o Selectable Forced-PWM, Pulse Skip, or Ultrasonic
Mode Operation
o 26V Maximum Input Voltage Rating
o Independent Enable Inputs
o Independent Power-Good Outputs
o Overvoltage Protection (MAX17007 Only)
o Undervoltage/Thermal Protection
o Automatic Dynamic REFIN1 Detection and
PGOOD1/Fault Blanking
o Voltage Soft-Start and Soft-Shutdown
Ordering Information
5V bias supply is required to power the internal circuitry
and its gate drivers.
PART
MAX17007 GTI+
TEMP RANGE
-40°C to +105°C
PIN-PACKAGE
28 Thin QFN
Independent on/off controls with well-defined logic thresh-
olds and independent open-drain power-good outputs
provide flexible system configurations. To prevent current
surges at startup, the internal voltage target is slowly
ramped up from zero to the final target with a slew rate of
1.3mV/μs for SMPS1 at CSL1 and 0.65mV/μs for SMPS2
at FB2. To prevent the output from ringing off below
MAX17008 GTI+* -40°C to +105°C 28 Thin QFN
+Denotes a lead-free package.
*Future product—contact factory for availability.
Pin Configuration
TOP VIEW
ground in shutdown, the internal voltage target is ramped
21
20
19
18
17
16
15
down from its previous value to zero with the same
respective slew rates. Integrated bootstrap switches
eliminate the need for external bootstrap diodes.
LX2 22
DH2 23
14 LX1
12 DH1
The MAX17007/MAX17008 are available in a space-
saving, 28-pin, 4mm x 4mm, thin QFN package with an
exposed backside pad.
Applications
PGOOD2 24
EN2 25
CSH2 26
CSL2 27
MAX17007
MAX17008
12 PGOOD1
11 EN1
10 CSH1
9 CSL1
Notebook Computers
5V and 3.3V Supplies
FB2 28
+
1
2
3
4
5
6
7
8 REFIN1
Low-Power I/O Supplies
GPU Core Supplies
2 to 4 Li+ Cells Battery-
Powered Devices
THIN QFN
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
(4mm x 4mm)
________________________________________________________________ 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 |
|---|---|
| MAX17008GTI+ | 功能描述:电压模式 PWM 控制器 QPWM Graphics Core 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 |
| MAX17008GTI+T | 功能描述:电压模式 PWM 控制器 QPWM Graphics Core 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 |
| MAX17009GTL+ | 功能描述:其他电源管理 AMD Dual-Phase CPU Controller RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| MAX17009GTL+T | 功能描述:其他电源管理 AMD Dual-Phase CPU Controller RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| MAX1700EEE | 功能描述:直流/直流开关转换器 1-3 Cell 1A Step-Up DC/DC Converters RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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