Product Summary

The LTC1872 is a constant frequency current mode step-up DC/DC controller providing excellent AC and DC load and line regulation. The device incorporates an accurate undervoltage lockout feature that shuts down the LTC1872 when the input voltage falls below 2.0V.
The LTC1872 boasts a ±2.5% output voltage accuracy and consumes only 270μA of quiescent current. For applications where efficiency is a prime consideration, the LTC1872 is configured for Burst Mode operation, which enhances efficiency at low output current.

In shutdown, the device draws a mere 8μA. The high 550kHz constant operating frequency allows the use of a small external inductor.

The LTC1872 is available in a small footprint 6-lead SOT-23.



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Features

High Efficiency: Up to 90%
High Output Currents Easily Achieved
Wide VIN Range: 2.5V to 9.8V
VOUT Limited Only by External Components
Constant Frequency 550kHz Operation
Burst Mode? Operation at Light Load
Current Mode Operation for Excellent Line and Load Transient Response
Low Quiescent Current: 270μA
Shutdown Mode Draws Only 8μA Supply Current
±2.5% Reference Accuracy
Tiny 6-Lead SOT-23 Package

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC1872ES6#TR
LTC1872ES6#TR


IC REG CTRLR BST PWM CM SOT23-6

Data Sheet

0-5000: $1.20
LTC1872ES6#TRM
LTC1872ES6#TRM


IC REG CTRLR BST PWM CM SOT23-6

Data Sheet

Negotiable 
LTC1872ES6#TRMPBF
LTC1872ES6#TRMPBF


IC REG CTRLR BST PWM CM SOT23-6

Data Sheet

0-1: $2.67
1-25: $2.38
25-100: $2.14
LTC1872ES6#TRPBF
LTC1872ES6#TRPBF


IC REG CTRLR BST PWM CM SOT23-6

Data Sheet

0-2500: $1.20