LT1110CN8

Series: -
Output Type: Adjustable
Number of Outputs: 1
PWM Type: -
Synchronous Rectifier: No
Operating Temperature: 0°C ~ 70°C
Mounting Type: Through Hole
Package / Case: 8-DIP (0.300", 7.62mm)
Packaging: Tube
Supplier Device Package: 8-PDIP
Current - Output: 400mA
Type: Step-Down (Buck), Step-Up (Boost)
Voltage - Output: Adjustable
Manufacturer: Linear Technology
Voltage - Input: 1 V ~ 30 V
Frequency - Switching: 70kHz


Features:

Operates at Supply Voltages From 1.0V to 30V
Works in Step-Up or Step-Down Mode
Only Three External Off-the-Shelf Components Required
Low-Battery Detector Comparator On-Chip
User-Adjustable Current Limit
Internal 1A Power Switch
Fixed or Adjustable Output Voltage Versions
Space-Saving 8-Pin MiniDIP or S8 Package


Application

Pagers
Cameras
Single-Cell to 5V Converters
Battery Backup Supplies
Laptop and Palmtop Computers
Cellular Telephones
Portable Instruments
Laser Diode Drivers
 Hand-Held Inventory Computers


Pinout




Specifications

Supply Voltage, Step-Up Mode ................................ 15V
Supply Voltage, Step-Down Mode ........................... 36V
SW1 Pin Voltage ...................................................... 50V
SW2 Pin Voltage .........................................  0.5V to VIN
Feedback Pin Voltage (LT1110) .............................. 5.5V
Switch Current ........................................................ 1.5A
Maximum Power Dissipation ............................. 500mW
Operating Temperature Range ..................... 0°C to 70°C
Storage Temperature Range .................. 65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................. 300°C


Description

The LT1110 is a versatile micropower DC-DC converter. The device requires only three external components to deliver a fixed output of 5V or 12V. The very low minimum supply voltage of 1.0V allows the use of the LT1110 in applications where the primary power source is a single cell. An on-chip auxiliary gain block can function as a low battery detector or linear post regulator. 

The 70kHz oscillator allows the use of surface mount inductors and capacitors in many applications. Quiescent current is just 300mA, making the device ideal in remote or battery powered applications where current consumption must be kept to a minimum. 

The device can easily be configured as a step-up or step-down converter, although for most step-down applications or input sources greater than 3V, the LT1111 is recommended. Switch current limiting is user-adjustable by adding a single external resistor. Unique reverse battery protection circuitry limits reverse current to safe, nondestructive levels at reverse supply voltages up to 1.6V.



Parameters: 

Technical/Catalog Information
LT1110CN8
Vendor
Linear Technology
Category
Integrated Circuits (ICs) 
  
Type
Step-Down (Buck), Step-Up (Boost)
Number of Outputs
1
Voltage - Input
1 ~ 30 V
Voltage - Output
Adjustable
Current - Output
400mA
Power - Output
500mW
Package / Case
8-DIP (300 mil) 
Packaging
Tube
Internal Switch(s)
Yes
Synchronous
No
Rds (On)
-
Operating Temperature
0°C ~ 70°C
Frequency - Switching
70kHz
Drawing Number
161; 05-08-1510; N; 8
  
Lead Free Status
Contains Lead
  
RoHS Status
RoHS Non-Compliant
 
  
Other Names
  
            LT1110CN8
      LT1110CN8