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参数资料
| 型号： | MAX17528GTJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/41页 |
| 文件大小： | 0K |
| 描述： | IC PWM CTRLR STP-DWN 32TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 系列： | Quick-PWM™ |
| 应用： | 控制器，Intel IMVP-6.5? GMCH |
| 输入电压： | 4.5 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 0.01 V ~ 1.5 V |
| 工作温度： | -40°C ~ 105°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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1-Phase Quick-PWM
Intel IMVP-6.5/GMCH Controllers
Pin Description (continued)
PIN
7
8
9
10
11
NAME
SKIP
THRM
TON
PWRGD
SHDN
FUNCTION
Pulse-Skipping Control Input. This 1.0V logic input signal indicates power usage and sets the
operating mode of the MAX17528. When SKIP is forced high, the controller is immediately set to
automatic pulse-skipping mode. The controller returns to forced-PWM mode when SKIP is forced low
and the output is in regulation. The PWRGD upper threshold is blanked during any downward output-
voltage transition that happens when the controller is in skip mode, and stays blanked until the
transition-related PWRGD blanking period is complete and the output reaches regulation.
IMVP-6.5: The MAX17528 is in skip mode during startup and while in boot mode, but is in forced-PWM
mode during the transition from boot mode to VID mode plus 20μs, and during soft-shutdown,
irrespective of the skip logic level. Connect to the system DPRSLPVR signal.
GMCH 2009: The MAX17528 is in skip mode during startup, while in standby mode, and while exiting
standby mode, but is in forced-PWM mode during soft-shutdown, and while entering standby mode,
irrespective of the skip logic level. Connect to the system GFXDPRSLPVR signal.
Comparator Input for Thermal Protection. THRM connects to the positive input of an internal
comparator. The comparator’s negative input connects to an internal resistive voltage-divider that
accurately sets the THRM threshold to 30% of the V CC voltage. Connect the output of a resistor
and thermistor-divider (between V CC and GND) to THRM with the values selected so the voltage at
THRM falls below 30% of V CC (1.5V when V CC = 5V) at the desired high temperature.
Switching Frequency Setting Input. An external resistor between the input power source and this
pin sets the switching period (t SW = 1/f SW ) according to the following equation:
t SW = 16.3pF x (R TON + 6.5k )
TON becomes high impedance in shutdown to reduce the input quiescent current. If the TON
current is less than 10μA, the MAX17528 disables the controller, sets the TON open fault latch,
and pulls DL and DH low.
Open-Drain Power-Good Output. PWRGD is high impedance after output-voltage transitions (except
during power-up and power-down) if FB is in regulation.
During startup, PWRGD is held low.
IMVP-6.5: PWRGD continues to be low while the output is at the boot voltage, and stays low until
5ms (typ) after CLKEN goes low.
GMCH 2009: PWRGD starts monitoring the FB voltage 5ms (typ) after startup (from shutdown or
standby mode) is complete. PWRGD is also held low while in standby mode, and while entering
and exiting standby mode.
PWRGD is forced low during soft-shutdown and while in shutdown. PWRGD is forced high
impedance whenever the slew-rate controller is active (output-voltage transitions), and continues
to be forced high impedance for an additional 20μs after the transition is completed.
The PWRGD upper threshold is blanked during any downward output-voltage transition that
happens when the MAX17528 is in skip mode, and stays blanked until the transition-related
PWRGD blanking period is complete and the output reaches regulation.
A pullup resistor on PWRGD causes additional finite shutdown current.
Active-Low Shutdown Control Input. Connect to V CC for normal operation. Connect to ground to put
the controller into the low-power 1μA (max) shutdown state. During startup, the controller ramps up
the output voltage at 1/8 the slew rate set by the TIME resistor to the target voltage defined by the
application circuit:
For IMVP-6.5 ( CLKEN pullup to 3.3V with 1.9k ), the startup target is the 1.1V boot voltage.
For GMCH 2009 ( CLKEN = GND), the startup target is the voltage set by the VID inputs.
During the shutdown transition, the MAX17528 softly ramps down the output voltage at 1/8 the
slew rate set by the TIME resistor. Forcing SHDNto 11V~13V disables UVP, thermal shutdown, and
clears the fault latches.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17528GTJ+ | 功能描述:电流型 PWM 控制器 1-Phase Quick-PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX17528GTJ+T | 功能描述:电流型 PWM 控制器 1-Phase Quick-PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX17535ETG+ | 功能描述:电池管理 High Frequency SMBus 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 |
| MAX17535ETG+T | 功能描述:电池管理 High Frequency SMBus 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 |
| MAX17535EVKIT+ | 功能描述:电池管理 EVKIT 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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