Product Summary

The LT1528CQ is a 3A low dropout regulator optimized to handle the large load current transients associated with the current generation of microprocessors. The LT1528CQ has the fastest transient response of currently available PNP regulators and is very tolerant of variations in capacitor ESR. Applications are (1)Microprocessor Applications; (2)Post Regulator for Switching Supplies; (3)5V to 3.3V Logic Regulator.

Parametrics

LT1528CQ absolute maximum ratings: (1)Input Voltage: ±15V; (2)Output Pin Reverse Current: 10mA; (3)Sense Pin Current: 10mA; (4)Shutdown Pin Input Voltage: 6.5V, – 0.6V; (5)Shutdown Pin Input Current (Note 1): 5mA; (6)Output Short-Circuit Duration: Indefinite; (7)Storage Temperature Range: –65°C to 150°C; (8)Operating Junction Temperature Range: 0°C to 125°C; (9)Lead Temperature (Soldering, 10 sec): 300°C.

Features

LT1528CQ features: (1)Dropout Voltage: 0.6V at IOUT = 3A; (2)Fast Transient Response; (3)Output Current: 3A; (4)Quiescent Current: 400mA; (5)No ProtectioDiodes Needed; (6)Fixed Output Voltage: 3.3V; (7)Controlled Quiescent Current iDropout; (8)ShutdowIQ = 125mA; (9)Stable with 3.3mF Output Capacitor; (10)Reverse Battery Protection; (11)No Reverse Output Current; (12)Thermal Limiting.

Diagrams

LT1528CQ pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LT1528CQ
LT1528CQ

IC REG LDO 3.3V/ADJ 3A DDPAK-5
Data Sheet
0-1700: $2.46
LT1528CQ#PBF
LT1528CQ#PBF

IC REG LDO 3.3V/ADJ 3A DDPAK-5
Data Sheet
0-1: $4.45
1-25: $2.95
25-100: $2.46
LT1528CQ#TRPBF
LT1528CQ#TRPBF

IC REG LDO 3.3V/ADJ 3A DDPAK-5
Data Sheet
0-750: $2.49
LT1528CQ#TR
LT1528CQ#TR

IC REG LDO 3.3V/ADJ 3A DDPAK5
Data Sheet
0-2250: $2.49