LTC2902 - LTC2902是Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance

LTC2902是LINEAR凌力尔特公司的一款四或更多电源监视器产品，LTC2902是LTC2902是Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance，本站介绍了LTC2902的封装应用图解、特点和优点、功能等，并给出了与LTC2902相关的LINEAR元器件型号供参考。

LTC2902 - LTC2902是Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance - 四或更多电源监视器 - 监视、控制和保护 - 凌力尔特

LTC2902 - Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance

LTC2902 - Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance - Linear Technology（凌力尔特）

功能描述

The LTC2902 is a programmable supply monitor for systems with up to four supply voltages. One of 16 preset or adjustable voltage monitor combinations can be selected using an external resistor divider connected to the program pin. The preset voltage thresholds are digitally programmable to 5%, 7.5%, 10% or 12.5% below the nominal operating voltage, and are accurate to 1.5% over temperature. All four voltage comparator outputs are connected to separate pins for individual supply monitoring.

The reset delay time is adjustable using an external capacitor. Tight voltage threshold accuracy and glitch immunity ensure reliable reset operation without false triggering. The RST output is guaranteed to be in the correct state for VCC down to 1V and may be disabled during supply margin testing. The LTC2902-1 features an open-drain RST output, while the LTC2902-2 has a push-pull RST output.

The 43µA supply current makes the LTC2902 ideal for power conscious systems and the part may be configured to monitor less than four inputs. The LTC2902-1/LTC2902-2 are available in the 16-lead narrow SSOP package.

特点

Simultaneously Monitors Four Supplies

16 User Selectable Combinations of 5V, 3.3V, 3V, 2.5V, 1.8V, 1.5V and/or ±Adjustable Voltage Thresholds

Guaranteed Threshold Accuracy: ±1.5% of MonitoredVoltage Over Temperature

Selectable Supply Tolerance: 5%, 7.5%,10%, 12.5% Below Monitored Voltage

Low Supply Current: 43µA Typ

Adjustable Reset Time

RESET Disable Pin for Margining Applications

Open-Drain RST Output (LTC2902-1)

Push-Pull RST Output (LTC2902-2)

Individual Nondelayed Monitor Outputs for Each Supply

Power Supply Glitch Immunity

Guaranteed RESET for VCC >/= 1V

应用

Desktop and Notebook Computers

Multivoltage Systems

Telecom Equipment

Portable Battery-Powered Equipment

Network Servers

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC2902-1CGN	SSOP-16	C	$3.30	$2.35
LTC2902-1CGN#PBF	SSOP-16	C	$3.30	$2.35
LTC2902-1CGN#TR	SSOP-16	C		$2.41
LTC2902-1CGN#TRPBF	SSOP-16	C		$2.41
LTC2902-1IGN	SSOP-16	I	$3.84	$2.70
LTC2902-1IGN#PBF	SSOP-16	I	$3.84	$2.70
LTC2902-1IGN#TR	SSOP-16	I		$2.76
LTC2902-1IGN#TRPBF	SSOP-16	I		$2.76
LTC2902-2CGN	SSOP-16	C	$3.30	$2.35
LTC2902-2CGN#PBF	SSOP-16	C	$3.30	$2.35
LTC2902-2CGN#TR	SSOP-16	C		$2.41
LTC2902-2CGN#TRPBF	SSOP-16	C		$2.41
LTC2902-2IGN	SSOP-16	I	$3.84	$2.70
LTC2902-2IGN#PBF	SSOP-16	I	$3.84	$2.70
LTC2902-2IGN#TR	SSOP-16	I		$2.76
LTC2902-2IGN#TRPBF	SSOP-16	I		$2.76

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