TPS61085T

ACTIVE

18.5V, 2A, 650kHz, 1.2MHz Step-Up DC-DC Converter with Forced PWM Mode (extended temp range)

Product details

Rating Automotive Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 2.3 Vin (max) (V) 6 Switching frequency (min) (kHz) 480 Switching frequency (max) (kHz) 1500 Features Enable, Frequency synchronization, Nonsynchronous Vout (min) (V) 2.8 Vout (max) (V) 18.5 Iq (typ) (µA) 70 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 2.6
Rating Automotive Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 2.3 Vin (max) (V) 6 Switching frequency (min) (kHz) 480 Switching frequency (max) (kHz) 1500 Features Enable, Frequency synchronization, Nonsynchronous Vout (min) (V) 2.8 Vout (max) (V) 18.5 Iq (typ) (µA) 70 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 2.6
TSSOP (PW) 8 19.2 mm² 3 x 6.4 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • 2.3-V to 6-V Input Voltage Range
  • 18.5-V Boost Converter With 2-A Switch Current
  • 650-kHz or 1.2-MHz Selectable Switching Frequency
  • Adjustable Soft Start
  • Thermal Shutdown
  • Undervoltage Lockout
  • 8-Pin VSSOP and TSSOP Packages
  • 2.3-V to 6-V Input Voltage Range
  • 18.5-V Boost Converter With 2-A Switch Current
  • 650-kHz or 1.2-MHz Selectable Switching Frequency
  • Adjustable Soft Start
  • Thermal Shutdown
  • Undervoltage Lockout
  • 8-Pin VSSOP and TSSOP Packages

The TPS61085 device is a high-frequency high-efficiency DC-to-DC boost converter with an integrated 2-A, 0.13-Ω power switch capable of providing an output voltage up to 18.5 V. The selectable frequency of 650 kHz or 1.2 MHz allows the use of small external inductors and capacitors, and provides fast transient response. The external compensation allows optimizing the regulator for application conditions. A capacitor connected to the specific soft-start pin minimizes inrush current at start-up.

The TPS61085 device is a high-frequency high-efficiency DC-to-DC boost converter with an integrated 2-A, 0.13-Ω power switch capable of providing an output voltage up to 18.5 V. The selectable frequency of 650 kHz or 1.2 MHz allows the use of small external inductors and capacitors, and provides fast transient response. The external compensation allows optimizing the regulator for application conditions. A capacitor connected to the specific soft-start pin minimizes inrush current at start-up.

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Technical documentation

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Type Title Date
* Data sheet TPS61085T 650-kHz and 1.2-MHz, 18.5-V Step-Up DC-DC Converter datasheet (Rev. B) PDF | HTML 29 Jul 2016
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011

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Package Pins CAD symbols, footprints & 3D models
TSSOP (PW) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian

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