MAX1635AEAI中文資料美信數(shù)據(jù)手冊PDF規(guī)格書

General Description

The MAX1630A–MAX1635A are buck-topology, step down, switch-mode, power-supply controllers that gener

ate 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.

Features

?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

(MAX1631A/MAX1634A)

?5V/50mA Linear Regulator Output

?Precision 2.5V Reference Output

?Programmable Power-Up Sequencing

?Power-Good (RESET) Output

?Output Overvoltage Protection

(MAX1630A/MAX1631A/MAX1632A)

?Output Undervoltage Shutdown

(MAX1630A/MAX1631A/MAX1632A)

?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

Applications

Notebook and Subnotebook Computers

PDAs and Mobile Communicators

Desktop CPU Local DC-DC Converters