TPS65262-1 Series

4.5V to 18V Input, 3A/1A/1A Triple Synchronous Step-Down Converter with 350mA/150mA Dual LDOs

Catalog

4.5V to 18V Input, 3A/1A/1A Triple Synchronous Step-Down Converter with 350mA/150mA Dual LDOs

Part	Frequency - Switching	Supplier Device Package	Number of Outputs	Topology	Voltage/Current - Output 1	Package / Case	Mounting Type	Voltage/Current - Output 2	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Max]	Voltage - Supply [Min]	Voltage/Current - Output 3	Utilized IC / Part	Regulator Topology	Main Purpose	Supplied Contents	Contents	Voltage - Input [Max]	Voltage - Input [Min]	Outputs and Type	Outputs and Type	Board Type	Voltage - Output	Current - Output
Texas Instruments TPS65262-2RHBT	600 kHz	32-VQFN (5x5)	5	Linear (LDO) (2) Step-Down (Buck) Synchronous (3)	0.6 V 3 A	32-VFQFN Exposed Pad	Surface Mount	0.6 V 1 A	125 °C	-40 °C	18 V	4.5 V	0.6 V 1 A
Texas Instruments TPS65262-1RHBT	600 kHz	32-VQFN (5x5)	5	Linear (LDO) (2) Step-Down (Buck) Synchronous (3)	0.6 V 3 A	32-VFQFN Exposed Pad	Surface Mount	0.6 V 1 A	85 °C	-40 °C	18 V	4.5 V	0.6 V 1 A
Texas Instruments TPS65262RHBT	600 kHz	32-VQFN (5x5)	5	Linear (LDO) (2) Step-Down (Buck) Synchronous (3)	0.6 V 3 A	32-VFQFN Exposed Pad	Surface Mount	0.6 V 1 A	85 °C	-40 °C	18 V	4.5 V	0.6 V 1 A
Texas Instruments TPS65262EVM-619	600 kHz													TPS65262	Buck	DC/DC Step Down with LDO	Board(s)	Board(s)	18 V	4.5 V	5 5	Non-Isolated	Fully Populated	1.2 V 1.8 V 2.5 V 3.3 V 5 V	1 A 3 A 100 mA 200 mA
Texas Instruments TPS65262-2RHBR	600 kHz	32-VQFN (5x5)	5	Linear (LDO) (2) Step-Down (Buck) Synchronous (3)	0.6 V 3 A	32-VFQFN Exposed Pad	Surface Mount	0.6 V 1 A	125 °C	-40 °C	18 V	4.5 V	0.6 V 1 A
Texas Instruments TPS65262RHBR	600 kHz	32-VQFN (5x5)	5	Linear (LDO) (2) Step-Down (Buck) Synchronous (3)	0.6 V 3 A	32-VFQFN Exposed Pad	Surface Mount	0.6 V 1 A	85 °C	-40 °C	18 V	4.5 V	0.6 V 1 A
Texas Instruments TPS65262-1RHBR	600 kHz	32-VQFN (5x5)	5	Linear (LDO) (2) Step-Down (Buck) Synchronous (3)	0.6 V 3 A	32-VFQFN Exposed Pad	Surface Mount	0.6 V 1 A	85 °C	-40 °C	18 V	4.5 V	0.6 V 1 A

Catalog

4.5V to 18V Input, 3A/1A/1A Triple Synchronous Step-Down Converter with 350mA/150mA Dual LDOs

Key Features

• Operating input voltage range: 4.5 to 18 VFeedback reference voltage: 0.6 V ±1%Maximum continuous output current: 3 A/1 A/1 AFixed 600-kHz switching frequencyIntegrated dual LDOs with input voltage range: 1.3 to 18 V and continuous output current: 350 mA/150 mAProgrammable soft-start time for Buck1Fixed 1-ms soft-start time for Buck2 and Buck3Internal loop compensation for Buck2 and Buck3Dedicated enable pins for each BuckSupport pulse skipping mode (PSM) and forced continuous current mode (FCCM)Output voltage power-good indicatorThermal overloading protection32-pin VQFN (RHB) 5-mm × 5-mm packageOvervoltage protection, overcurrent and short-circuit protection, and overtemperature protectionOperating input voltage range: 4.5 to 18 VFeedback reference voltage: 0.6 V ±1%Maximum continuous output current: 3 A/1 A/1 AFixed 600-kHz switching frequencyIntegrated dual LDOs with input voltage range: 1.3 to 18 V and continuous output current: 350 mA/150 mAProgrammable soft-start time for Buck1Fixed 1-ms soft-start time for Buck2 and Buck3Internal loop compensation for Buck2 and Buck3Dedicated enable pins for each BuckSupport pulse skipping mode (PSM) and forced continuous current mode (FCCM)Output voltage power-good indicatorThermal overloading protection32-pin VQFN (RHB) 5-mm × 5-mm packageOvervoltage protection, overcurrent and short-circuit protection, and overtemperature protection

Description

The TPS65262-1 is a monolithic, triple-synchronous step-down (buck) converter with 3-A/1-A/1-A output current. A wide 4.5- to 18-V input supply voltage range encompasses the most intermediate bus voltage operating off 5-V, 9-V, 12-V, or 15-V power bus. The converter, with constant frequency peak current mode, is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The device operates at 600-kHz fixed switching frequency. The loop compensations for buck 2 and buck3 have been integrated for less external components. The 180° out-of-phase operation between buck1 and buck2, buck3 (buck2 and buck3 run in phase) minimizes the input filter requirements. At light load, the device automatically operates in pulse skipping mode (PSM) which provides high efficiency by reducing switching losses. Two low dropout voltage linear regulators (LDOs) are built in TPS65262-1 with input voltage range of 1.3 to 5.5 V, continuous output current 350/150 mA, independent enable, and adjustable output voltage. The TPS65262-1 features an automatic power sequence with driving MODE pin to high and configuring EN1, EN2, and EN3 pins. The device features protection for overvoltage, overcurrent, short-circuit, and overtemperature. A power good pin asserts when any buck output voltages are out of regulation. The TPS65262-1 is a monolithic, triple-synchronous step-down (buck) converter with 3-A/1-A/1-A output current. A wide 4.5- to 18-V input supply voltage range encompasses the most intermediate bus voltage operating off 5-V, 9-V, 12-V, or 15-V power bus. The converter, with constant frequency peak current mode, is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The device operates at 600-kHz fixed switching frequency. The loop compensations for buck 2 and buck3 have been integrated for less external components. The 180° out-of-phase operation between buck1 and buck2, buck3 (buck2 and buck3 run in phase) minimizes the input filter requirements. At light load, the device automatically operates in pulse skipping mode (PSM) which provides high efficiency by reducing switching losses. Two low dropout voltage linear regulators (LDOs) are built in TPS65262-1 with input voltage range of 1.3 to 5.5 V, continuous output current 350/150 mA, independent enable, and adjustable output voltage. The TPS65262-1 features an automatic power sequence with driving MODE pin to high and configuring EN1, EN2, and EN3 pins. The device features protection for overvoltage, overcurrent, short-circuit, and overtemperature. A power good pin asserts when any buck output voltages are out of regulation.