Analog Devices, Inc. 100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators LT1172CN8#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
LT1172CN8#PBF
100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators LT1172CN8#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 - LT1172CN8#PBF - Lingto Electronic Limited
Shenzhen, China
PMIC - Voltage Regulators - DC DC Switching Regulators
LT1172CN8#PBF
PMIC - Voltage Regulators - DC DC Switching Regulators LT1172CN8#PBF
IC REG MULT CONFG ADJ 1.25A 8DIP

IC REG MULT CONFG ADJ 1.25A 8DIP

Supplier's Site Datasheet
Voltage Regulators - DC DC Switching Regulators - LT1172CN8#PBF-ND - DigiKey
Thief River Falls, MN, United States
Voltage Regulators - DC DC Switching Regulators
LT1172CN8#PBF-ND
Voltage Regulators - DC DC Switching Regulators LT1172CN8#PBF-ND
IC REG MULT CONFG ADJ 1.25A 8DIP

IC REG MULT CONFG ADJ 1.25A 8DIP

Supplier's Site Datasheet
 - 5455017 - RS Components, Ltd.
Corby, Northants, United Kingdom
Linear Technology presents step-up (boost) switching regulators with both synchronous and non-synchronous internal switches. The high efficient DC-DC converters have a wide range of input voltages and switching frequencies. Some products feature unique properties that can help increase battery run time in handheld devices or even be managed in a range of switching configurations. Typical applications would be power inverters, fully floating multiple outputs and 5V logic supplies. For small circuit implementation Regulator Function = Boost/Buck Controller, Inverting, Non-Inverting Maximum Output Current = 3.5A Number of Outputs = 1 Line Regulation = 0.03 %/V Mounting Type = Through Hole Package Type = PDIP Pin Count = 8 Output Type = Adjustable Maximum Switching Frequency = 115 kHz Switching Regulator = Yes

Linear Technology presents step-up (boost) switching regulators with both synchronous and non-synchronous internal switches. The high efficient DC-DC converters have a wide range of input voltages and switching frequencies. Some products feature unique properties that can help increase battery run time in handheld devices or even be managed in a range of switching configurations. Typical applications would be power inverters, fully floating multiple outputs and 5V logic supplies.
For small circuit implementation
Regulator Function = Boost/Buck Controller, Inverting, Non-Inverting
Maximum Output Current = 3.5A
Number of Outputs = 1
Line Regulation = 0.03 %/V
Mounting Type = Through Hole
Package Type = PDIP
Pin Count = 8
Output Type = Adjustable
Maximum Switching Frequency = 115 kHz
Switching Regulator = Yes

Supplier's Site
 - 5455017P - RS Components, Ltd.
Corby, Northants, United Kingdom
Linear Technology presents step-up (boost) switching regulators with both synchronous and non-synchronous internal switches. The high efficient DC-DC converters have a wide range of input voltages and switching frequencies. Some products feature unique properties that can help increase battery run time in handheld devices or even be managed in a range of switching configurations. Typical applications would be power inverters, fully floating multiple outputs and 5V logic supplies. For small circuit implementation Regulator Function = Boost/Buck Controller, Inverting, Non-Inverting Maximum Output Current = 3.5A Number of Outputs = 1 Line Regulation = 0.03 %/V Mounting Type = Through Hole Package Type = PDIP Pin Count = 8 Output Type = Adjustable Maximum Switching Frequency = 115 kHz Switching Regulator = Yes Delivery on production packaging - Tube. This product is non-returnable.

Linear Technology presents step-up (boost) switching regulators with both synchronous and non-synchronous internal switches. The high efficient DC-DC converters have a wide range of input voltages and switching frequencies. Some products feature unique properties that can help increase battery run time in handheld devices or even be managed in a range of switching configurations. Typical applications would be power inverters, fully floating multiple outputs and 5V logic supplies.
For small circuit implementation
Regulator Function = Boost/Buck Controller, Inverting, Non-Inverting
Maximum Output Current = 3.5A
Number of Outputs = 1
Line Regulation = 0.03 %/V
Mounting Type = Through Hole
Package Type = PDIP
Pin Count = 8
Output Type = Adjustable
Maximum Switching Frequency = 115 kHz
Switching Regulator = Yes
Delivery on production packaging - Tube. This product is non-returnable.

Supplier's Site
 - 1451037 - RS Components, Ltd.
Corby, Northants, United Kingdom
LT1172CN8PBF - Power Management ICs - Buck Boost Switching Regulators

LT1172CN8PBF - Power Management ICs - Buck Boost Switching Regulators

Supplier's Site
Sheung Wan, Hong Kong
Switching Voltage Regulators
LT1172CN8#PBF
Switching Voltage Regulators LT1172CN8#PBF
Switching Voltage Regulators 1.25A Pwr Sw Reg 100kHz

Switching Voltage Regulators 1.25A Pwr Sw Reg 100kHz

Supplier's Site Datasheet
Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators - LT1172CN8#PBF - Shenzhen Shengyu Electronics Technology Limited
Futian, China
Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators
LT1172CN8#PBF
Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators LT1172CN8#PBF
IC REG MULT CONFG ADJ 1.25A 8DIP

IC REG MULT CONFG ADJ 1.25A 8DIP

Supplier's Site
Voltage Regulators - DC DC Switching Regulators - LT1172CN8#PBF - Quarktwin Technology Ltd.
Shenzhen, Guangdong, China
Voltage Regulators - DC DC Switching Regulators
LT1172CN8#PBF
Voltage Regulators - DC DC Switching Regulators LT1172CN8#PBF
Buck, Boost, Cuk, Flyback, Forward Converter Switching Regulator IC Positive or Negative Adjustable 1.244V 1 Output 1.25A (Switch) 8-DIP (0.300", 7.62mm)

Buck, Boost, Cuk, Flyback, Forward Converter Switching Regulator IC Positive or Negative Adjustable 1.244V 1 Output 1.25A (Switch) 8-DIP (0.300", 7.62mm)

Supplier's Site Datasheet

Technical Specifications

  Analog Devices, Inc. Lingto Electronic Limited DigiKey RS Components, Ltd. VAST STOCK CO., LIMITED Shenzhen Shengyu Electronics Technology Limited 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 LT1172CN8#PBF LT1172CN8#PBF LT1172CN8#PBF-ND 5455017 LT1172CN8#PBF LT1172CN8#PBF LT1172CN8#PBF
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 Switching Voltage Regulators Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators Voltage Regulators - DC DC Switching Regulators
Package Type SOIC; TO-220 DIP; Other; 8-DIP (0.300", 7.62mm) Other; PDIP DIP; Other; 8-DIP (0.300\", 7.62mm)
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 1.25 amps 1.25 amps 3.5 amps 1.25 amps 1.25 amps
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