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参数资料
| 型号： | MAX17007AGTI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 24/35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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Dual and Combinable QPWM Graphics
Core Controllers for Notebook Computers
R FB 2 HI FB 2 LO ? CSL 2 ? 1 ?
= R
Output Voltage
The MAX17007/MAX17008 feature preset and
adjustable output voltages for both SMPSs, and
dynamic output voltages for SMPS1. In combined
mode, the output voltage is set by REFIN1, and all fea-
tures for SMPS1 output-voltage configuration and
dynamic voltage changes apply to the combined out-
put. Figure 9 is the SMPS target decode block diagram.
Preset/Adjustable Output Voltages
(Dual-Mode Feedback)
Connect REFIN1 to V CC to set the SMPS1 voltage to
voltage to preset 1.5V. The SMPS1 output voltage can
be adjusted up to 2V by changing REFIN1 voltage with-
out using an external resistive voltage-divider. The out-
put voltage of SMPS2 can be adjusted with an external
resistive voltage-divider between CSL2 and GND with
the center tap connected to FB2 (Figure 10). Choose
R FB2LO (resistance from FB2 to GND) to be approxi-
mately 10k ? and solve for R FBHI (resistance from CSL2
to FB2) using the equation:
? V ?
? 0 . 7 V ?
preset 1.05V. Connect FB2 to REF to set the SMPS2
The MAX17007/MAX17008 regulate the valley of the
output ripple, so the actual DC output voltage is higher
V CC - 1V
REFIN1
REF (2.0V)
9.5R
1.05V
PRESET
(FB1 = V CC )
TARGET1
than the slope compensated target by 50% of the out-
put ripple voltage. Under steady-state conditions, the
MAX17007/MAX17008s’ internal integrator corrects for
this 50% output ripple voltage error, resulting in an out-
put-voltage accuracy that is dependent only on the off-
set voltage of the integrator amplifier provided in the
Electrical Characteristics table.
Dynamic Output Voltages (REFIN1)
The MAX17007/MAX17008 regulate the output to the
voltage set at REFIN1. By changing the voltage at
10.5R
(A) SMPS1 TARGET DECODE
REFIN1 (Figure 1), the MAX17007/MAX17008 can be
used in applications that require dynamic output volt-
age changes between two set points. For a step-volt-
age change at REFIN, the rate of change of the output
V CC - 1V
FB2
PRESET
(FB2 = REF)
COMBINE
(FB2 = V CC )
voltage is limited either by the internal 9.5mV/μs slew-
rate circuit or by the component selection—inductor
current ramp, the total output capacitance, the current
limit, and the load during the transition—whichever is
slower. The total output capacitance determines how
much current is needed to change the output voltage,
while the inductor limits the current ramp rate.
REF - 0.3V
TARGET1
REF (2.0V)
TARGET2
LX2
MAX17007 DL2
MAX17008
N L2
L2
R SENSE2
C OUT2
5R
1.5V
GND
CSH2
8R
7R
0.7V
(B) SMPS2 TARGET DECODE
CSL2
FB2
R FB2LO
R FB2HI
Figure 9. SMPS Target Decode Block Diagram
Figure 10. Setting VOUT2 with a Resistive Voltage-Divider
24
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17007BGTI+ | 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 |
| MAX17007BGTI+T | 制造商:Maxim Integrated Products 功能描述:DUAL AND COMBINABLE QPWM GRAPHICS CORE CONTROLLERS FOR NOTEB - Tape and Reel |
| MAX17007EVKIT+ | 功能描述:电源管理IC开发工具 QPWM Graphics Core Controller RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX17007GTI+ | 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 |
| MAX17007GTI+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 |
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