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| 型号： | MAX17007AGTI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/35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
Pin Description (continued)
PIN
5
6
7
8
9
10
11
12
13
NAME
SKIP
TON1
TON2
REFIN1
CSL1
CSH1
EN1
PGOOD1
DH1
FUNCTION
Pulse-Skipping Control Input. This four-level input determines the mode of operation under normal
steady-state conditions and dynamic output-voltage transitions:
V DD (5V) = Forced-PWM operation
Open (3.3V) = Ultrasonic mode (without forced-PWM during transitions)
REF (2V) = Pulse-skipping mode (with forced-PWM during transitions)
GND = Pulse-skipping mode (without forced-PWM during transitions)
There are no dynamic transitions for SMPS2, so SKIP = 2V and SKIP = GND have the same pulse-
skipping behavior for SMPS2 without any forced-PWM transitions.
In combined mode, the ultrasonic mode is disabled, and the SKIP = OPEN (3.3V) setting is identical
to the SKIP = GND setting.
Frequency-Setting Input for SMPS1. An external resistor between the input power source and TON1
sets the switching period (T SW1 ) of SMPS1:
T SW1 = C TON (R TON1 + 6.5k )
where C TON = 16.26pF.
TON1 is high impedance in shutdown.
In combined mode, TON1 sets the switching period for both SMPS1 and SMPS2.
Frequency-Setting Input for SMPS2. An external resistor between the input power source and TON2
sets the switching period (T SW2 ) of SMPS2:
T SW2 = C TON (R TON2 + 6.5k )
where C TON = 16.26pF.
Set TON2 to a switching frequency different from TON1. A 10% to 30% difference in switching
frequency between SMPS1 and SMPS2 is recommended.
TON2 is high impedance in shutdown.
In combined mode, TON2 cannot be left open.
External Reference Input for SMPS1. REFIN1 sets the feedback regulation voltage of CSL1. SMPS1
includes an internal window comparator to detect REFIN1 voltage changes that are greater than
±50mV (typ), allowing the controller to blank PGOOD1 and the fault protection, and force the output
transition, if enabled. When REFIN1 is tied to V CC , SMPS1 regulates the output to 1.05V.
In combined mode, REFIN1 sets the feedback regulation voltage of the combined output.
Output-Sense and Negative Current-Sense Input for SMPS1. When using the internal preset 1.05V
feedback divider (REFIN1 = V CC ), the controller uses CSL1 to sense the output voltage. Connect to
the negative terminal of the current-sense element. Figure 14 describes two different current-sensing
options—using accurate sense resistors or lossless inductor DCR sensing.
Positive Current-Sense Input for SMPS1. Connect to the positive terminal of the current-sense
element. Figure 14 describes two different current-sensing options—using accurate sense resistors
or lossless inductor DCR sensing.
Enable Control Input for SMPS1. Connect to V CC for normal operation. Pull EN1 low to disable
SMPS1. The controller slowly ramps down the output voltage to ground and after the target voltage
reaches 0.1V, the controller forces DL1 low. When both EN1 and EN2 are low, the device enters the
low-power shutdown state.
In combined mode, EN1 controls the combined SMPS output. EN2 is unused and must be grounded.
Open-Drain Power-Good Output for SMPS1. PGOOD1 is low when the SMPS1 voltage is more than 200mV
below or 300mV above the target voltage, during soft-start, and in shutdown. After the SMPS1 soft-start
circuit has terminated, PGOOD1 becomes high impedance 200μs after the output is in regulation. PGOOD1
is blanked (forced high-impedance state) when a dynamic REFIN1 transition is detected.
High-Side Gate-Driver Output for SMPS1. DH1 swings from LX1 to BST1. DH1 is low in shutdown.
12
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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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