TPS61390 85-VOUT boost converter with current mirror and sample and hold | TI.com

TPS61390
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85-VOUT boost converter with current mirror and sample and hold

 

Description

The TPS61390 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 TPS61390 includes accurate current mirror with two gain options selectable (1 : 5 or 4 : 5).

Additionally, the TPS61390 integrates a sample-and-hold circuitry for the burst-mode optical receiver applications to capture the current flowing through the APD and pass the current to an external ADC. The device supports fast response time during the transition between strong and weak optical density. The TPS61390 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 TPS61390 is available in 3 mm × 3 mm QFN package with exposed pad underneath.

Features

  • 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
  • Sample window with minimum 400-ns
  • 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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WEBENCH® Designer TPS61390

  Min   Max Range
Vin  V 2.5 to 5.5V
Vout  V 20 to 85V
Iout  A ≤ 0.04A
Ambient Temp  °C -40 to 125°C

Parametrics

Compare all products in Boost converters (integrated switch) Email Download to Excel
Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Switch current limit (Typ) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Type Rating Package Group
TPS61390 Order now 2.5     5.5       84     1     1     600     800     0.5     Enable
UVLO Fixed    
  -40 to 125     Converter     Catalog     WQFN | 16    
LM2733 Order now 2.7     14     3     40     1.5     1     400     1850     1.1     Enable
Light Load Efficiency    
96     -40 to 125     Converter     Catalog     SOT-23 | 5    
LM5001 Order now 3.1     75     1.26     75     1     1     50     1500     3.1     Enable
Frequency Synchronization
UVLO Adjustable    
85     -40 to 125     Converter     Catalog     SOIC | 8
WSON | 8    
TPS55340 Order now 2.9     32     3     38     6.6     1     100     1200     0.5     Enable
Frequency Synchronization
Light Load Efficiency    
90     -40 to 150     Converter     Catalog     HTSSOP | 14
WQFN | 16    
TPS61170 Order now 3     18     3     38     1.2     1     1000     1200     2.3     Enable
Light Load Efficiency    
93     -40 to 85     Converter     Catalog     WSON | 6    
TPS61391 Samples not available 2.5     5.5       84     1     1     600     800     0.5     Enable
UVLO Fixed    
  -40 to 125     Converter     Catalog     WQFN | 16