Product Summary

The LTC1772BES6#TRPBF is a 5-lead SOT-23 step down, current mode, DC/DC converter. Intended for small to medium power applications, it operates from 2.5V to 5.5V input voltage range and switches at 1MHz, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. The output voltage is adjustable from 1.25V to 5V. A built-in 0.28Ω switch allows up to 0.5A of output current at high efficiency. OPTI-LOOPTM compensation allows the transient response to be optimized over a wide range of loads and output capacitors. The applications of the LTC1772BES6#TRPBF are (1)PDAs/Palmtop PCs; (2)Digital Cameras; (3)Cellular Phones; (4)Portable Media Players; (5)PC Cards; (6)Handheld Equipment.

Parametrics

LTC1772BES6#TRPBF absolute maximum ratings: (1)(Voltages Referred to GND Pin), VIN Voltage (Pin 5): –0.3V to 6V; (2)ITH/RUN Voltage (Pin 4):–0.3V to 3V; (3)VFB Voltage (Pin 3):–0.3V to 3V; (4)Peak Switch Current (Pin 1): 1.3A; (5)VIN – SW (Max Switch Voltage): 8.5V to –0.3V; (6)Operating Temperature Range: –40 to 85℃; (7)Junction Temperature: 125℃; (8)Storage Temperature Range: –65 to 150℃; (9)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LTC1772BES6#TRPBF features: (1)Tiny 5-Lead SOT-23 Package; (2)Uses Tiny Capacitors and Inductor; (3)High Frequency Operation: 1MHz; (4)High Output Current: 500mA; (5)Low RDS(ON) Internal Switch: 0.28Ω; (6)High Efficiency: Up to 94%; (7)Current Mode Operation for Excellent Line and Load Transient Response; (8)Short-Circuit Protected; (9)Low Quiescent Current: 135μA; (10)Low Dropout Operation: 100% Duty Cycle; (11)Ultralow Shutdown Current: IQ < 1μA; (12)Peak Inductor Current Independent of Inductor Value; (13)Output Voltages from 5V Down to 1.25V.

Diagrams

LTC1772BES6#TRPBF block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC1772BES6#TRPBF
LTC1772BES6#TRPBF


IC REG CTRLR BUCK PWM CM SOT23-6

Data Sheet

0-2500: $1.16
Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC1040
LTC1040

Other


Data Sheet

Negotiable 
LTC1040CN
LTC1040CN


IC COMPARATOR LOW PWR DUAL 18DIP

Data Sheet

0-3240: $1.32
LTC1040CN#PBF
LTC1040CN#PBF


IC COMPARATOR LOW PWR DUAL 18DIP

Data Sheet

0-1: $2.33
1-25: $1.55
25-100: $1.32
LTC1040CSW
LTC1040CSW


IC COMPARATOR LOW PWR DUAL18SOIC

Data Sheet

0-2720: $1.71
LTC1040CSW#PBF
LTC1040CSW#PBF


IC COMPARATOR LOW PWR DUAL18SOIC

Data Sheet

0-280: $1.71
LTC1040CSW#TR
LTC1040CSW#TR


IC COMPARATOR DUAL LOWPWR 18SOIC

Data Sheet

0-3000: $1.74