Analog Devices, Inc. 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators LT1171CT#PBF

Description
Product Details The LT1170/LT1171/LT1172 are monolithic high power switching regulators. They can be operated in all standard switching configurations including buck, boost, flyback, forward, inverting and “Cuk.” A high current, high efficiency switch is included on the die along with all oscillator, control and protection circuitry. Integration of all functions allows the LT1170/LT1171/LT1172 to be built in a standard 5-pin TO-3 or TO-220 power package as well as the 8-pin packages (LT1172). This makes them extremely easy to use and provides “bust proof” operation similar to that obtained with 3-pin linear regulators. The LT1170/LT1171/LT1172 operate with supply voltages from 3V to 60V, and draw only 6mA quiescent current. They can deliver load power up to 100W with no external power devices. By utilizing current-mode switching techniques, they provide excellent AC and DC load and line regulation. The LT1170/LT1171/LT1172 have many unique features not found even on the vastly more difficult to use low power control chips presently available. They use adaptive antisat switch drive to allow very wide ranging load currents with no loss in efficiency. An externally activated shutdown mode reduces total supply current to 50μA typically for standby operation. Applications Logic Supply 5V at 10A 5V Logic to ±15V Op Amp Supply Battery Upconverter Power Inverter (+ to –) or (– to +) Fully Floating Multiple Outputs User Note: This data sheet is only intended to provide specifications, graphs, and a general functional description of the LT1170/LT1171/LT1172 . Application circuits are included to show the capability of the LT1170/LT1171/LT1172 . A complete design manual (AN19) should be obtained to assist in developing new designs. This manual contains a comprehensive discussion of both the LT1070 and the external components used with it, as well as complete formulas for calculating the values of these components. The manual can also be used for the LT1170/LT1171/LT1172 by factoring in the higher frequency. A CAD design program called SwitcherCAD® is also available.
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Suppliers

Company
Product
Description
Supplier Links
Norwood, MA, USA
100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators
LT1171CT#PBF
100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators LT1171CT#PBF
Product Details The LT1170/LT1171/LT1172 are monolithic high power switching regulators. They can be operated in all standard switching configurations including buck, boost, flyback, forward, inverting and “Cuk.” A high current, high efficiency switch is included on the die along with all oscillator, control and protection circuitry. Integration of all functions allows the LT1170/LT1171/LT1172 to be built in a standard 5-pin TO-3 or TO-220 power package as well as the 8-pin packages (LT1172). This makes them extremely easy to use and provides “bust proof” operation similar to that obtained with 3-pin linear regulators. The LT1170/LT1171/LT1172 operate with supply voltages from 3V to 60V, and draw only 6mA quiescent current. They can deliver load power up to 100W with no external power devices. By utilizing current-mode switching techniques, they provide excellent AC and DC load and line regulation. The LT1170/LT1171/LT1172 have many unique features not found even on the vastly more difficult to use low power control chips presently available. They use adaptive antisat switch drive to allow very wide ranging load currents with no loss in efficiency. An externally activated shutdown mode reduces total supply current to 50μA typically for standby operation. Applications Logic Supply 5V at 10A 5V Logic to ±15V Op Amp Supply Battery Upconverter Power Inverter (+ to –) or (– to +) Fully Floating Multiple Outputs User Note: This data sheet is only intended to provide specifications, graphs, and a general functional description of the LT1170/LT1171/LT1172 . Application circuits are included to show the capability of the LT1170/LT1171/LT1172 . A complete design manual (AN19) should be obtained to assist in developing new designs. This manual contains a comprehensive discussion of both the LT1070 and the external components used with it, as well as complete formulas for calculating the values of these components. The manual can also be used for the LT1170/LT1171/LT1172 by factoring in the higher frequency. A CAD design program called SwitcherCAD® is also available.

Product Details

The LT1170/LT1171/LT1172 are monolithic high power switching regulators. They can be operated in all standard switching configurations including buck, boost, flyback, forward, inverting and “Cuk.” A high current, high efficiency switch is included on the die along with all oscillator, control and protection circuitry. Integration of all functions allows the LT1170/LT1171/LT1172 to be built in a standard 5-pin TO-3 or TO-220 power package as well as the 8-pin packages (LT1172). This makes them extremely easy to use and provides “bust proof” operation similar to that obtained with 3-pin linear regulators.

The LT1170/LT1171/LT1172 operate with supply voltages from 3V to 60V, and draw only 6mA quiescent current. They can deliver load power up to 100W with no external power devices. By utilizing current-mode switching techniques, they provide excellent AC and DC load and line regulation.

The LT1170/LT1171/LT1172 have many unique features not found even on the vastly more difficult to use low power control chips presently available. They use adaptive antisat switch drive to allow very wide ranging load currents with no loss in efficiency. An externally activated shutdown mode reduces total supply current to 50μA typically for standby operation.

Applications

  • Logic Supply 5V at 10A
  • 5V Logic to ±15V Op Amp Supply
  • Battery Upconverter
  • Power Inverter (+ to –) or (– to +)
  • Fully Floating Multiple Outputs

User Note:

This data sheet is only intended to provide specifications, graphs, and a general functional description of the LT1170/LT1171/LT1172. Application circuits are included to show the capability of the LT1170/LT1171/LT1172. A complete design manual (AN19) should be obtained to assist in developing new designs. This manual contains a comprehensive discussion of both the LT1070 and the external components used with it, as well as complete formulas for calculating the values of these components. The manual can also be used for the LT1170/LT1171/LT1172 by factoring in the higher frequency. A CAD design program called SwitcherCAD® is also available.

Supplier's Site Datasheet
PMIC - Voltage Regulators - DC DC Switching Regulators - LT1171CT#PBF - Lingto Electronic Limited
Shenzhen, China
PMIC - Voltage Regulators - DC DC Switching Regulators
LT1171CT#PBF
PMIC - Voltage Regulators - DC DC Switching Regulators LT1171CT#PBF
IC REG MULTI CONFG ADJ TO220-5

IC REG MULTI CONFG ADJ TO220-5

Supplier's Site Datasheet
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators - LT1171CT#PBF - Shenzhen Shengyu Electronics Technology Limited
Futian, China
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators
LT1171CT#PBF
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators LT1171CT#PBF
IC REG MULTI CONFG ADJ TO220-5

IC REG MULTI CONFG ADJ TO220-5

Supplier's Site
Voltage Regulators - DC DC Switching Regulators - 505-LT1171CT#PBF-ND - DigiKey
Thief River Falls, MN, United States
Voltage Regulators - DC DC Switching Regulators
505-LT1171CT#PBF-ND
Voltage Regulators - DC DC Switching Regulators 505-LT1171CT#PBF-ND
IC REG MULTI CONFG ADJ TO220-5

IC REG MULTI CONFG ADJ TO220-5

Supplier's Site Datasheet
Sheung Wan, Hong Kong
Switching Voltage Regulators
LT1171CT#PBF
Switching Voltage Regulators LT1171CT#PBF
Switching Voltage Regulators 2.5A Power Switch Reg 100kHz

Switching Voltage Regulators 2.5A Power Switch Reg 100kHz

Supplier's Site Datasheet
 - 5455001P - RS Components, Ltd.
Corby, Northants, United Kingdom
A range of SEPIC DC-DC Converters from Linear Technology which can be used in applications where the output voltage may be either higher or lower than the input voltage. The SEPIC (Single-Ended Primary-Inductor Converter) topology also allows these converters to produce a negative output from a positive input voltage. Some of these switching regulators include features such as multiple outputs, programmable current limit, low battery detection and burst-mode operation. SEPIC (Single-Ended Primary-Inductor Converter) Regulator Function = Boost/Buck Controller, Inverting, Non-Inverting Maximum Output Current = 5.5A Number of Outputs = 1 Line Regulation = 0.03 %/V Mounting Type = Through Hole Package Type = TO-220 Pin Count = 5 Output Type = Adjustable Maximum Switching Frequency = 115 kHz Switching Regulator = Yes Delivery on production packaging - Tube. This product is non-returnable.

A range of SEPIC DC-DC Converters from Linear Technology which can be used in applications where the output voltage may be either higher or lower than the input voltage. The SEPIC (Single-Ended Primary-Inductor Converter) topology also allows these converters to produce a negative output from a positive input voltage. Some of these switching regulators include features such as multiple outputs, programmable current limit, low battery detection and burst-mode operation.
SEPIC (Single-Ended Primary-Inductor Converter)
Regulator Function = Boost/Buck Controller, Inverting, Non-Inverting
Maximum Output Current = 5.5A
Number of Outputs = 1
Line Regulation = 0.03 %/V
Mounting Type = Through Hole
Package Type = TO-220
Pin Count = 5
Output Type = Adjustable
Maximum Switching Frequency = 115 kHz
Switching Regulator = Yes
Delivery on production packaging - Tube. This product is non-returnable.

Supplier's Site
 - 5455001 - RS Components, Ltd.
Corby, Northants, United Kingdom
A range of SEPIC DC-DC Converters from Linear Technology which can be used in applications where the output voltage may be either higher or lower than the input voltage. The SEPIC (Single-Ended Primary-Inductor Converter) topology also allows these converters to produce a negative output from a positive input voltage. Some of these switching regulators include features such as multiple outputs, programmable current limit, low battery detection and burst-mode operation. SEPIC (Single-Ended Primary-Inductor Converter) Regulator Function = Boost/Buck Controller, Inverting, Non-Inverting Maximum Output Current = 5.5A Number of Outputs = 1 Line Regulation = 0.03 %/V Mounting Type = Through Hole Package Type = TO-220 Pin Count = 5 Output Type = Adjustable Maximum Switching Frequency = 115 kHz Switching Regulator = Yes

A range of SEPIC DC-DC Converters from Linear Technology which can be used in applications where the output voltage may be either higher or lower than the input voltage. The SEPIC (Single-Ended Primary-Inductor Converter) topology also allows these converters to produce a negative output from a positive input voltage. Some of these switching regulators include features such as multiple outputs, programmable current limit, low battery detection and burst-mode operation.
SEPIC (Single-Ended Primary-Inductor Converter)
Regulator Function = Boost/Buck Controller, Inverting, Non-Inverting
Maximum Output Current = 5.5A
Number of Outputs = 1
Line Regulation = 0.03 %/V
Mounting Type = Through Hole
Package Type = TO-220
Pin Count = 5
Output Type = Adjustable
Maximum Switching Frequency = 115 kHz
Switching Regulator = Yes

Supplier's Site
 - 1533400 - RS Components, Ltd.
Corby, Northants, United Kingdom
LT1171CTPBF - Power Management ICs - Buck Boost Switching Regulators

LT1171CTPBF - Power Management ICs - Buck Boost Switching Regulators

Supplier's Site
Voltage Regulators - DC DC Switching Regulators - LT1171CT#PBF - Quarktwin Technology Ltd.
Shenzhen, Guangdong, China
Voltage Regulators - DC DC Switching Regulators
LT1171CT#PBF
Voltage Regulators - DC DC Switching Regulators LT1171CT#PBF
Buck, Boost, Cuk, Flyback, Forward Converter Switching Regulator IC Positive or Negative Adjustable 1.244V 1 Output 2.5A (Switch) TO-220-5

Buck, Boost, Cuk, Flyback, Forward Converter Switching Regulator IC Positive or Negative Adjustable 1.244V 1 Output 2.5A (Switch) TO-220-5

Supplier's Site Datasheet

Technical Specifications

  Analog Devices, Inc. Lingto Electronic Limited Shenzhen Shengyu Electronics Technology Limited DigiKey VAST STOCK CO., LIMITED RS Components, Ltd. Quarktwin Technology Ltd.
Product Category IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators
Product Number LT1171CT#PBF LT1171CT#PBF LT1171CT#PBF 505-LT1171CT#PBF-ND LT1171CT#PBF 5455001P LT1171CT#PBF
Product Name 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators PMIC - Voltage Regulators - DC DC Switching Regulators Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators Voltage Regulators - DC DC Switching Regulators Switching Voltage Regulators Voltage Regulators - DC DC Switching Regulators
Package Type TO-220 TO-220 TO-220; Other; TO-220-5 TO-220; Other; TO-220 TO-220; Other; TO-220-5
Life Cycle Stage Production Active Active
VIN 3 to 40 volts 3 to 40 volts 3 to 40 volts
Operating Temperature 0 to 70 C (32 to 158 F) 0 to 100 C (32 to 212 F) 0 to 100 C (32 to 212 F) 0 to 100 C (32 to 212 F)
IOUT 2.5 amps 2.5 amps 2.5 amps 5.5 amps 2.5 amps
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