Product details


Vin (Min) (V) 2.5 Vin (Max) (V) 5.5 Vout (Max) (V) 84 Switch current limit (Typ) (A) 1 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 800 Iq (Typ) (mA) 0.5 Features Enable, UVLO Fixed Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Boost converters (integrated switch)

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WQFN (RTE) 16 9 mm² 3 x 3 open-in-new Find other Boost converters (integrated switch)


  • Input voltage range: 2.5 V to 5.5 V
  • Output voltage range: up to 85 V
  • R(DS)on of switching FET: 0.9 Ω
  • Switch current limit: 1000 mA
  • High optical power protection with 0.5-µs response time
  • Switching frequency: 700 kHz
  • Quiescent current: 110 µA from VIN, 340 µA from VOUT, 140 µA from AVCC
  • Soft-start time: 4.8 ms
  • Package: 3 mm × 3 mm × 0.75 mm QFN

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The TPS61391 is a 700-kHz pulse-width modulating (PWM) step-up converter with an 85-V switch FET with an input ranging from 2.5 V to 5.5 V. The switching peak current is up to 1000 mA. The TPS61391 includes accurate current mirror with two gain options selectable (1 : 5 or 4 : 5).

The TPS61391 also provides high optical-power protection with an additional FET in series with the APD power path with the typical response time of 0.5 µs . It can recover automatically once the high optical releasing.

The TPS61391 is available in 3 mm × 3 mm QFN package with exposed pad underneath.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 4
Type Title Date
* Datasheet TPS61391 85-VOUT Boost Converter with Current Mirror Integrated datasheet Jul. 11, 2019
Application note How to Sample the Small APD Current Precisely With TPS61390 Boost Converter Dec. 20, 2019
Application note TPS61390 Boost Converter With Low APD Bias Voltage Ripple Dec. 13, 2019
User guide TPS61391EVM-058 Evaluation Module Nov. 14, 2019

Design & development

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Hardware development

The TPS61391 is a step-up converter with the current mirror and sample / hold circuitry being integrated, which is designed for biasing and monitoring the avalanche photodiodes (APD) in the optical receivers. The TPS61391 supports up to 85-V output from an input ranging from 2.5 V to 5.5 V. The (...)
  • Input voltage range: 2.5 V to 5.5 V
  • Output voltage range: up to 85 V
  • High optical power protection with 0.5-μs response time
  • Switching frequency: 700kHz

Software development

SLVC800.ZIP (335 KB)
SLVC801.ZIP (392 KB)

Design tools & simulation

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  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

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WQFN (RTE) 16 View options

Ordering & quality

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