Analog Devices, Inc. 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators LT1172CS8#TRPBF

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Description
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Norwood, MA, USA
100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators
LT1172CS8#TRPBF
100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators LT1172CS8#TRPBF
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 - LT1172CS8#TRPBF - Lingto Electronic Limited
Shenzhen, China
PMIC - Voltage Regulators - DC DC Switching Regulators
LT1172CS8#TRPBF
PMIC - Voltage Regulators - DC DC Switching Regulators LT1172CS8#TRPBF
IC REG MULTI CONFG ADJ 8SOIC

IC REG MULTI CONFG ADJ 8SOIC

Supplier's Site Datasheet
Voltage Regulators - DC DC Switching Regulators - LT1172CS8#TRPBF - Quarktwin Technology Ltd.
Shenzhen, Guangdong, China
Voltage Regulators - DC DC Switching Regulators
LT1172CS8#TRPBF
Voltage Regulators - DC DC Switching Regulators LT1172CS8#TRPBF
Buck, Boost, Cuk, Flyback, Forward Converter Switching Regulator IC Positive or Negative Adjustable 1.244V 1 Output 1.25A (Switch) 8-SOIC (0.154", 3.90mm Width)

Buck, Boost, Cuk, Flyback, Forward Converter Switching Regulator IC Positive or Negative Adjustable 1.244V 1 Output 1.25A (Switch) 8-SOIC (0.154", 3.90mm Width)

Supplier's Site Datasheet
Integrated Circuits - LT1172CS8#TRPBF - LIXINC Electronics Co., Limited
Hong Kong, China
Integrated Circuits
LT1172CS8#TRPBF
Integrated Circuits LT1172CS8#TRPBF
IC REG MULTI CONFG ADJ 8SOIC

IC REG MULTI CONFG ADJ 8SOIC

Supplier's Site Datasheet
IC REG MULTI CONFG ADJ 8SOIC - 471-LT1172CS8#TRPBF - Utmel Electronic Limited
Hong Kong, China
IC REG MULTI CONFG ADJ 8SOIC
471-LT1172CS8#TRPBF
IC REG MULTI CONFG ADJ 8SOIC 471-LT1172CS8#TRPBF
IC REG MULTI CONFG ADJ 8SOIC

IC REG MULTI CONFG ADJ 8SOIC

Supplier's Site
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators - LT1172CS8#TRPBF - Shenzhen Shengyu Electronics Technology Limited
Futian, China
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators
LT1172CS8#TRPBF
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators LT1172CS8#TRPBF
IC REG MULT CONFIG ADJ 1.25A 8SO

IC REG MULT CONFIG ADJ 1.25A 8SO

Supplier's Site
Voltage Regulators - DC DC Switching Regulators - 505-LT1172CS8#TRPBFDKR-ND - DigiKey
Thief River Falls, MN, United States
Voltage Regulators - DC DC Switching Regulators
505-LT1172CS8#TRPBFDKR-ND
Voltage Regulators - DC DC Switching Regulators 505-LT1172CS8#TRPBFDKR-ND
IC REG MULT CONFIG ADJ 1.25A 8SO

IC REG MULT CONFIG ADJ 1.25A 8SO

Supplier's Site Datasheet
Voltage Regulators - DC DC Switching Regulators - 505-LT1172CS8#TRPBFCT-ND - DigiKey
Thief River Falls, MN, United States
Voltage Regulators - DC DC Switching Regulators
505-LT1172CS8#TRPBFCT-ND
Voltage Regulators - DC DC Switching Regulators 505-LT1172CS8#TRPBFCT-ND
IC REG MULT CONFIG ADJ 1.25A 8SO

IC REG MULT CONFIG ADJ 1.25A 8SO

Supplier's Site Datasheet
Voltage Regulators - DC DC Switching Regulators - 505-LT1172CS8#TRPBFTR-ND - DigiKey
Thief River Falls, MN, United States
Voltage Regulators - DC DC Switching Regulators
505-LT1172CS8#TRPBFTR-ND
Voltage Regulators - DC DC Switching Regulators 505-LT1172CS8#TRPBFTR-ND
IC REG MULT CONFIG ADJ 1.25A 8SO

IC REG MULT CONFIG ADJ 1.25A 8SO

Supplier's Site Datasheet

Technical Specifications

  Analog Devices, Inc. Lingto Electronic Limited Quarktwin Technology Ltd. LIXINC Electronics Co., Limited Utmel Electronic Limited Shenzhen Shengyu Electronics Technology Limited DigiKey
Product Category IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators IC Linear Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators
Product Number LT1172CS8#TRPBF LT1172CS8#TRPBF LT1172CS8#TRPBF LT1172CS8#TRPBF 471-LT1172CS8#TRPBF LT1172CS8#TRPBF 505-LT1172CS8#TRPBFDKR-ND
Product Name 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators PMIC - Voltage Regulators - DC DC Switching Regulators Voltage Regulators - DC DC Switching Regulators Integrated Circuits IC REG MULTI CONFG ADJ 8SOIC Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators Voltage Regulators - DC DC Switching Regulators
Package Type SOIC; TO-220 SOIC; Other; 8-SOIC (0.154\", 3.90mm Width) SOIC; Other; Tape & Reel (TR)Cut Tape (CT)Digi-Reel庐 SOIC; Other; 8-SOIC (0.154, 3.90mm Width) SOIC SOIC; Other; 8-SOIC (0.154", 3.90mm Width)
Life Cycle Stage Production Active Active Active Active
VIN 3 to 40 volts 3 to 40 volts 40 volts 15 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) 0 to 100 C (32 to 212 F) 0 to 100 C (32 to 212 F)
IOUT 1.25 amps 1.25 amps 1.25 amps 1.25 amps 1.25 amps 1.25 amps
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