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線性與低壓差 (LDO) 穩壓器

TPS777

現行

具有啟用與延遲重設功能的 750-mA、10-V、低壓差電壓穩壓器

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產品規格表

TPS777

現行
產品規格表 立即訂購

產品詳細資料

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.75 Vin (max) (V) 10 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 1.5 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Noise (µVrms) 54 Iq (typ) (mA) 0.08 Thermal resistance θJA (°C/W) 43 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 PSRR at 100 KHz (dB) 29 Dropout voltage (Vdo) (typ) (mV) 260 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.75 Vin (max) (V) 10 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 1.5 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Noise (µVrms) 54 Iq (typ) (mA) 0.08 Thermal resistance θJA (°C/W) 43 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 PSRR at 100 KHz (dB) 29 Dropout voltage (Vdo) (typ) (mV) 260 Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4 SOIC (D) 8 29.4 mm² 4.9 x 6
  • Open Drain Power-On Reset With 200-ms Delay (TPS777xx)
  • Open Drain Power Good (TPS778xx)
  • 750-mA Low-Dropout Voltage Regulator
  • Avilable in 1.5-V, 1.8-V, 2.5-V, 3.3-V Fixed Output and Adjustable Versions
  • Dropout Voltage to 260 mV (Typ) at 750 mA (TPS77x33)
  • Ultralow 85 µA Typical Quiescent Current
  • Fast Transient Response
  • 2% Tolerance Over Specified Conditions for Fixed-Output Versions
  • 8-Pin SOIC and 20-Pin TSSOP PowerPAD™ (PWP) Package
  • Thermal Shutdown Protection

All trademarks are the property of their respective owners.
  • Open Drain Power-On Reset With 200-ms Delay (TPS777xx)
  • Open Drain Power Good (TPS778xx)
  • 750-mA Low-Dropout Voltage Regulator
  • Avilable in 1.5-V, 1.8-V, 2.5-V, 3.3-V Fixed Output and Adjustable Versions
  • Dropout Voltage to 260 mV (Typ) at 750 mA (TPS77x33)
  • Ultralow 85 µA Typical Quiescent Current
  • Fast Transient Response
  • 2% Tolerance Over Specified Conditions for Fixed-Output Versions
  • 8-Pin SOIC and 20-Pin TSSOP PowerPAD™ (PWP) Package
  • Thermal Shutdown Protection

All trademarks are the property of their respective owners.

TPS777xx and TPS778xx are designed to have a fast transient response and be stable with a 10-µF low ESR capacitors. This combination provides high performance at a reasonable cost.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 260 mV at an output current of 750 mA for the TPS77x33) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 85 µA over the full range of output current, 0 mA to 750 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO family also features a sleep mode; applying a TTL high signal to EN\ (enable) shuts down the regulator, reducing the quiescent current to 1 µA at TJ = 25°C.

The RESET\ output of the TPS777xx initiates a reset in microcomputer and microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS777xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage.

Power good (PG) of the TPS778xx is an active high output, which can be used to implement a power-on reset or a low-battery indicator.

The TPS777xx and TPS778xx are offered in 1.5-V, 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V for TPS77701 option and 1.2 V to 5.5 V for TPS77801 option). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges. The TPS777xx and TPS778xx families are available in 8 pin SOIC and 20 pin PWP packages.

TPS777xx and TPS778xx are designed to have a fast transient response and be stable with a 10-µF low ESR capacitors. This combination provides high performance at a reasonable cost.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 260 mV at an output current of 750 mA for the TPS77x33) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 85 µA over the full range of output current, 0 mA to 750 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO family also features a sleep mode; applying a TTL high signal to EN\ (enable) shuts down the regulator, reducing the quiescent current to 1 µA at TJ = 25°C.

The RESET\ output of the TPS777xx initiates a reset in microcomputer and microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS777xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage.

Power good (PG) of the TPS778xx is an active high output, which can be used to implement a power-on reset or a low-battery indicator.

The TPS777xx and TPS778xx are offered in 1.5-V, 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V for TPS77701 option and 1.2 V to 5.5 V for TPS77801 option). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges. The TPS777xx and TPS778xx families are available in 8 pin SOIC and 20 pin PWP packages.
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類型 標題 日期
* Data sheet TPS777/8xx: Fast-Transient-Response 750-mA LDO Voltage Regulators datasheet (Rev. G) 2004年 1月 5日
Application note LDO Noise Demystified (Rev. B) PDF | HTML 2020年 8月 18日
Application note PowerPAD™ Thermally Enhanced Package (Rev. H) 2018年 7月 6日
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日

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參考設計

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This reference design also allows easy evaluation of full-bridge, brushed DC-motor drivers (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00144 — 車用 HVAC 阻尼器馬達控制

TIDA-00144 reference design consists of a 1.6A, dual H-bridge motor driver and a small number of external components that can drive up to two brushed DC motors found in automotive HVAC damper motor applications. This design features off battery capabilities with 45V maximum operating supply (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00146 — 車用適應性前燈定位步進馬達

This TIDA-00146 reference design provides an integrated motor driver solution intended to drive a bipolar stepper motor in an automotive adaptive front light positioning application. This design features off battery capabilities with 45V maximum operating supply voltage. Along with, internal (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00111 — 具中等扭矩驅動的步進馬達系統

This bipolar stepper motor system implements an MSP430, a DRV8818, and a NEMA 23 motor.  It's suitable for applications requiring up to 140 oz-in of torque, and up to 800 RPM.  Motor voltage support is 8V to 35V, and max current is 2.5A.  A multitude of configuration options allow (...)
Test report: PDF
電路圖: PDF
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