LT1534IS

Series: -
Output Type: Adjustable
Number of Outputs: 1
Synchronous Rectifier: No
Mounting Type: Surface Mount
Type: Step-Up (Boost)
Operating Temperature: -40°C ~ 125°C
Packaging: Tube
PWM Type: Current Mode
Supplier Device Package: 16-SOIC
Current - Output: 2A
Manufacturer: Linear Technology
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Voltage - Input: 2.7 V ~ 23 V
Frequency - Switching: 200kHz ~ 250kHz
Voltage - Output: 1.3 V ~ 35 V


Features:

Greatly Reduced Conducted and Radiated EMI
Low Switching Harmonic Content
Independent Control of Switch Voltage and Current Slew Rates
2A Current Limited Power Switch
Regulates Positive and Negative Voltages
20kHz to 250kHz Oscillator Frequency
Easily Synchronized to External Clock
Wide Input Voltage Range: 2.7V to 23V
Low Shutdown Current: 12µA Typical
Easier Layout than with Conventional Switchers


Application

Precision Instrumentation Systems
Isolated Supplies for Industrial Automation
Medical Instruments
Wireless Communications
Single Board Data Acquisition Systems


Pinout




Specifications

Input Voltage (VIN) ................................................. 30V
Switch Voltage (COL) .............................................. 35V
SHDN Pin Voltage .................................................... 30V
Feedback Pin Current (FB) ................................... 10mA
Negative Feedback Pin Current (NFB) ..............  ±10mA
Operating Junction Temperature Range
    LT1534C............................................ 0°C to 125°C
    LT1534I ....................................... 40°C to 125°C
Maximum Junction Temperature ........................ 125°C
Storage Temperature Range ............65°C to 150°C
Lead Temperature (Soldering, 10 sec.) ............. 300°C


Description

The LT®1534/LT1534-1 are a new class of switching regulator designed to reduce conducted and radiated electromag netic interference (EMI). Ultralow noise and EMI are achieved by providing user control of the output switch slew rates.Voltage and current slew rates can be independently programmed to optimize switcher harmonic content versus efficiency. The LT1534/LT1534-1 can reduce high frequency harmonic power by as much as 40dB with only minor losses in efficiency.

      The LT1534/LT1534-1 utilize a current mode architecture optimized for low noise boost topologies. The ICs include a 2A power switch along with all necessary oscillator, control and protection circuitry. Unique error amp circuitry can regulate both positive and negative voltages. The internal oscillator may be synchronized to an external clock for more accurate placement of switching harmonics. Protection features include cycle-by-cycle current limit protection, under voltage lockout and thermal shutdown.

      Low minimum supply voltage and low supply current during shutdown make theLT1534/LT1534-1 well suited for portable applications. The LT1534/LT1534-1 are available in the 16-pin narrow SO package.

Parameters:

Technical/Catalog Information	LT1534IS
Vendor	Linear Technology
Category	Integrated Circuits (ICs)
Type	Step-Up (Boost)
Number of Outputs	1
Voltage - Input	2.7 ~ 23 V
Voltage - Output	-
Current - Output	2A
Power - Output	-
Package / Case	16-SOIC (3.9mm Width)
Packaging	Tube
Internal Switch(s)	Yes
Synchronous	Yes
Rds (On)	-
Operating Temperature	-40°C ~ 125°C
Frequency - Switching	250kHz
Drawing Number	161; 05-08-1610; S; 8
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	LT1534IS LT1534IS