LT1175CQ-5

Series: -
Number of Regulators: 1
Mounting Type: Surface Mount
Regulator Topology: Negative Fixed
Voltage - Output: -5V
Operating Temperature: 0°C ~ 70°C
Packaging: Tube
Package / Case: TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Current - Output: 500mA
Manufacturer: Linear Technology
Voltage - Input: Down to -20V
Supplier Device Package: D2PAK-5
Voltage - Dropout (Typical): 0.5V @ 500mA
Current - Limit (Min): Adjustable


Features:

· Stable with Wide Range of Output Capacitors
· Operating Current: 45mA
· Shutdown Current: 10mA
· Adjustable Current Limit
· Positive or Negative Shutdown Logic
· Low Voltage Linear Dropout Characteristics
· Fixed 5V and Adjustable Versions
· Tolerates Reverse Output Voltage


Application

· Analog Systems
· Modems
· Instrumentation
· A/D and D/A Converters
· Interface Drivers
· Battery-Powered Systems


Specifications

Input Voltage (Transient 1 sec, Note 11) ............... 25V
Input Voltage (Continuous) .................................... 20V
Input-to-Output Differential Voltage (Note 12) ....... 20V
5V SENSE Pin (with Respect to GND Pin) ...... 2V, 10V
ADJ SENSE Pin
(with Respect to OUTPUT Pin) ................... 20V, 0.5V
5V SENSE Pin
(with Respect to OUTPUT Pin) ...................... 20V, 7V
Output Reverse Voltage ........................................... 2V
SHDN Pin to GND Pin Voltage (Note 2) .... 13.5V, 20V
SHDN Pin to VIN Pin Voltage .......................... 30V, 5V
Operating Junction Temperature Range
LT1175C ............................................... 0°C to 125°C
LT1175I ........................................... 40°C to 125°C
Ambient Operating Temperature Range
LT1175C ................................................. 0°C to 70°C
LT1175I ............................................ 40°C to 85°C
Storage Temperature Range ........... 65°C to 150°C
Lead Temperature (Soldering, 10 sec)............... 300°C


Description

The LT®1175 is a negative micropower low dropout regulator. It features 45mA quiescent current, dropping to 10mA in shutdown. A new reference amplifier topology gives precision DC characteristics along with the ability to maintain good loop stability with an extremely wide range of output capacitors. Very low dropout voltage and high efficiency are obtained with a unique power transistor antisaturation design. Adjustable and fixed 5V versions are available.

Several new features make the LT1175 very user-friendly. The SHDN pin can interface directly to either positive or negative logic levels. Current limit is user-selectable at 200mA, 400mA, 600mA and 800mA. The output can be forced to reverse voltage without damage or latchup. Unlike some earlier designs, the increase in quiescent current during a dropout condition is actively limited.

The LT1175 has complete blowout protection with current limiting, power limiting and thermal shutdown. Special attention was given to the problem of high temperature operation with micropower operating currents, preventing output voltage rise under no-load conditions. The LT1175 is available in 8-pin PDIP and SO packages, 3-lead SOT- 223 as well as 5-pin surface mount DD and through-hole TO-220 packages. The 8-pin SO package is specially constructed for low thermal resistance.

Parameters:

Technical/Catalog Information	LT1175CQ-5
Vendor	Linear Technology
Category	Integrated Circuits (ICs)
Regulator Type	Single Output
Package / Case	D²Pak, SMD-220, TO-263 (5 leads + tab)
Packaging	Tube
Regulator Topology	Negative Fixed
Current - Output	500mA
Voltage - Output	-5V
Operating Temperature	0°C ~ 70°C
Voltage - Input	-7 ~ -20 V
Number of Regulators	1
Current - Limit (Min)	Adjustable
Current Short Circuit (Isc)	-
Drawing Number	161; 05-08-1461; Q; 5
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	LT1175CQ 5 LT1175CQ5