数据手册：MAX1630, MAX1631, MAX1632, MAX1633, MAX1634, MAX1635 高度集成的笔记本电源控制器具有最高的系统性能和最小尺寸 .pdf [英文Rev.4(PDF,288kB)]
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The MAX1630–MAX1635 are buck-topology, step-down,
switch-mode, power-supply controllers that generate
logic-supply voltages in battery-powered systems. These
high-performance, dual/triple-output devices include on-board
power-up sequencing, power-good signaling with
delay, digital soft-start, secondary winding control, low-dropout
circuitry, internal frequency-compensation networks,
and automatic bootstrapping.
Up to 96% efficiency is achieved through synchronous
rectification and Maxim's proprietary Idle Mode™ control
scheme. Efficiency is greater than 80% over a 1000:1
load-current range, which extends battery life in system-suspend
or standby mode. Excellent dynamic response
corrects output load transients caused by the latest
dynamic-clock CPUs within five 300kHz clock cycles.
Strong 1A on-board gate drivers ensure fast external
N-channel MOSFET switching.
These devices feature a logic-controlled and synchronizable,
fixed-frequency, pulse-width-modulation (PWM)
operating mode. This reduces noise and RF interference
in sensitive mobile communications and pen-entry applications.
Asserting the active-low SKIP pin enables fixed-frequency
mode, for lowest noise under all load conditions.
The MAX1630–MAX1635 include two PWM regulators,
adjustable from 2.5V to 5.5V with fixed 5.0V and 3.3V
modes. All these devices include secondary feedback
regulation, and the MAX1630/MAX1632/MAX1633/
MAX1635 each contain 12V/120mA linear regulators. The
MAX1631/MAX1634 include a secondary feedback input
(SECFB), plus a control pin (STEER) that selects which
PWM (3.3V or 5V) receives the secondary feedback signal.
SECFB provides a method for adjusting the secondary
winding voltage regulation point with an external
resistor divider, and is intended to aid in creating auxiliary
voltages other than fixed 12V.
The MAX1630/MAX1631/MAX1632 contain internal output
overvoltage and undervoltage protection features.
产品关键特性
- 96% Efficiency
- +4.2V to +30V Input Range
- 2.5V to 5.5V Dual Adjustable Outputs
- Selectable 3.3V and 5V Fixed or Adjustable Outputs (Dual Mode™)
- 12V Linear Regulator
- Adjustable Secondary Feedback (MAX1631/MAX1634)
- 5V/50mA Linear Regulator Output
- Precision 2.5V Reference Output
- Programmable Power-Up Sequencing
- Power-Good (active-low RESET) Output
- Output Overvoltage Protection (MAX1630/MAX1631/MAX1632)
- Output Undervoltage Shutdown (MAX1630/MAX1631/MAX1632)
- 200kHz/300kHz Low-Noise, Fixed-Frequency Operation
- Low-Dropout, 99% Duty-Factor Operation
- 2.5mW Typical Quiescent Power (+12V input, both SMPSs on)
- 4µA Typical Shutdown Current
- 28-Pin SSOP Package
| 应用与使用范围
- 台式CPU本地DC-DC转换器
- 笔记本电脑和亚笔记本电脑
- PDA与移动通信
|
芯片订购型号
| 订购型号 | 产品状态 | 封装形式 | 工作温度 | RoHS/无铅 |
| MAX1630CAI | NRND | MAX1631AEAI+ | SSOP；28引脚；81.6mm²封装信息 | 0°C至+70°C |
| MAX1630CAI-T | NRND | MAX1631AEAI+ | SSOP；28引脚封装信息 | 0°C至+70°C |
| MAX1630EAI | NRND | MAX1631AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1630EAI-T | NRND | MAX1631AEAI+ | SSOP；28引脚封装信息 | -40°C至+85°C |
| MAX1631CAI | NRND | MAX1631AEAI+ | SSOP；28引脚；81.6mm²封装信息 | 0°C至+70°C |
| MAX1631CAI+ | 生产中 | | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1631CAI+T | 生产中 | | SSOP；封装信息 | -40°C至+85°C |
| MAX1631CAI-T | NRND | MAX1631AEAI+ | SSOP；28引脚封装信息 | 0°C至+70°C |
| MAX1631EAI | NRND | MAX1631AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1631EAI+ | NRND | MAX1631AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1631EAI+T | NRND | MAX1631AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1631EAI-T | NRND | MAX1631AEAI+ | SSOP；28引脚封装信息 | -40°C至+85°C |
| MAX1632CAI | NRND | MAX1632AEAI+ | SSOP；28引脚；81.6mm²封装信息 | 0°C至+70°C |
| MAX1632CAI-T | NRND | MAX1632AEAI+ | SSOP；28引脚封装信息 | 0°C至+70°C |
| MAX1632EAI | NRND | MAX1632AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1632EAI+ | NRND | MAX1632AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1632EAI+T | NRND | MAX1632AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1632EAI-T | NRND | MAX1632AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1633CAI | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | 0°C至+70°C |
| MAX1633CAI-T | NRND | MAX1634AEAI+ | SSOP；28引脚封装信息 | 0°C至+70°C |
| MAX1633EAI | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1633EAI-T | NRND | MAX1634AEAI+ | SSOP；28引脚封装信息 | -40°C至+85°C |
| MAX1634CAI | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | 0°C至+70°C |
| MAX1634CAI+ | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | 0°C至+70°C |
| MAX1634CAI+T | NRND | MAX1634AEAI+ | SSOP；封装信息 | 0°C至+70°C |
| MAX1634CAI-T | NRND | MAX1634AEAI+ | SSOP；28引脚封装信息 | 0°C至+70°C |
| MAX1634EAI | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1634EAI+ | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1634EAI+T | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1634EAI-T | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1635CAI | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | 0°C至+70°C |
| MAX1635CAI-T | NRND | MAX1634AEAI+ | SSOP；28引脚封装信息 | 0°C至+70°C |
| MAX1635EAI | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
| MAX1635EAI-T | NRND | MAX1634AEAI+ | SSOP；28引脚；81.6mm²封装信息 | -40°C至+85°C |
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