Product Summary

The LT1129CQ is a micropower low dropout regulator with shutdown. The LT1129CQ is capable of supplying 700mA of output current with a dropout voltage of 400mV at maximum output. Designed for use in battery powered systems, the low quiescent current, 50uA operating and 16uA in shutdown, make the LT1129CQ an ideal choice. The quiescent current does not rise in dropout as it does with many other low dropout PNP regulators.

Parametrics

LT1129CQ absolute maximum ratings: (1)Input Voltage: ± 30V; (2)Output Pin Reverse Current: 10mA; (3)Sense Pin Current: 10mA; (4)Adjust Pin Current: 10mA; (5)Sense Pin, Adjust Pin Reverse Voltage: － 0.6V; (6)Shutdown Pin Input Voltage (Note 2): 6.5V, － 0.6V; (7)Shutdown Pin Input Current (Note 2): 20mA; (8)Output Short-Circuit Duration: Indefinite.

Features

LT1129CQ features: (1)Adjustable Output from 3.8V to 30V; (2)3.3V and 5V Fixed Output Voltages; (3)Controlled Quiescent Current in Dropout; (4)Shutdown; (5)16uA Quiescent Current in Shutdown; (6)Stable with 3.3μF Output Capacitor; (7)Reverse Battery Protection; (8)No Reverse Output Current; (9)Thermal Limiting; (10)Surface Mount SOT-223 and DD Pak Packages.

Diagrams

LT1129CQ circuit diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LT1129CQ
LT1129CQ

IC REG LDO ADJ .7A DDPAK-5
Data Sheet
0-2600: $1.53
LT1129CQ#PBF
LT1129CQ#PBF

IC REG LDO ADJ .7A DDPAK-5
Data Sheet
0-1: $2.94
1-25: $1.95
25-100: $1.53
LT1129CQ#TR
LT1129CQ#TR

IC REG LDO ADJ .7A DDPAK-5
Data Sheet
0-3000: $1.56
LT1129CQ#TRPBF
LT1129CQ#TRPBF

IC REG LDO ADJ .7A DDPAK-5
Data Sheet
0-750: $1.56
LT1129CQ-3.3#PBF
LT1129CQ-3.3#PBF

IC REG LDO 3.3V .7A DDPAK-5
Data Sheet
0-1: $2.94
1-25: $1.95
25-100: $1.53
LT1129CQ-3.3
LT1129CQ-3.3

IC REG LDO 3.3V .7A DDPAK-5
Data Sheet
0-2600: $1.53
LT1129CQ-3.3#TR
LT1129CQ-3.3#TR

IC REG LDO 3.3V .7A DDPAK-5
Data Sheet
0-3000: $1.56
LT1129CQ-3.3#TRPBF
LT1129CQ-3.3#TRPBF

IC REG LDO 3.3V .7A DDPAK-5
Data Sheet
0-750: $1.56