Product Summary

The LT1584CT#PBF is a 500kHz monolithic buck mode switching regulator, functionally identical to the LT1584CT#PBF but optimized for lower input voltage applications. It will operate over a 4V to 15V input range, compared with 5.5V to 25V for the LT1375. A 1.5A switch is included on the die along with all the necessary oscillator, control and logic circuitry. High switching frequency allows a considerable reduction in the size of external components. The topology is current mode for fast transient response and good loop stability. Both fixed output voltage (3.3V) and adjustable parts are available. The applications of the LT1584CT#PBF are Portable Computers, Battery-Powered Systems, Battery Charger and Distributed Power.

Parametrics

LT1584CT#PBF absolute maximum ratings: (1)Input Voltage: 16V; (2)Boost Pin Voltage: 25V; (3)Shutdown Pin Voltage: 7V; (4)FB Pin Voltage (Adjustable Part): 3.5V; (5)FB Pin Current (Adjustable Part): 1mA; (6)Sense Voltage (Fixed 3.3V Part): 5V; (7)Sync Pin Voltage: 7V; (8)Operating Ambient Temperature Range: 0 to 70℃; (9)Max Operating Junction Temperature: 125℃; (10)Storage Temperature Range: –65 to 150℃; (11)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LT1584CT#PBF features: (1)Constant 500kHz Switching Frequency; (2)Uses All Surface Mount Components; (3)Operates with Inputs as Low as 4V; (4)Saturated Switch Design (0.3Ω); (5)Cycle-by-Cycle Current Limiting; (6)Easily Synchronizable; (7)Inductor Size as Low as 2μH; (8)Shutdown Current: 20μA.

Diagrams

LT1584CT#PBF block diagram

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LT1584CT#PBF
LT1584CT#PBF


IC REG LDO ADJ TO220-3

Data Sheet

0-1: $6.56
1-25: $4.35
25-100: $3.63
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LT1500
LT1500

Other


Data Sheet

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LT1500CS
LT1500CS

Linear Technology

IC SW REG CURRNT MODE ADJ 14SOIC

Data Sheet

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LT1500CS-3/5
LT1500CS-3/5

Linear Technology

IC SW REG CURRNTMODE 3V/5V14SOIC

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LT1500IS
LT1500IS

Linear Technology

IC SW REG CURRNT MODE ADJ 14SOIC

Data Sheet

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LT1500IS-3/5
LT1500IS-3/5

Linear Technology

IC SW REG CURRNTMODE 3V/5V14SOIC

Data Sheet

Negotiable 
LT1501
LT1501

Other


Data Sheet

Negotiable