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TPS6735

ACTIVE

Fixed Negative 5-V 200-MA Inverting DC/DC Converter

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Product details

Topology Inverting Vin (min) (V) 4 Vin (max) (V) 6.2 Vout (max) (V) -5 Vout (min) (V) -5 Duty cycle (max) (%) 100 Features Enable Switch current limit (typ) (A) 2 Switching frequency (min) (kHz) 160 Switching frequency (max) (kHz) 160 Iq (typ) (mA) 1.9 Iout (max) (A) 0.2 Rating Catalog Operating temperature range (°C) -40 to 85 Type Converter
Topology Inverting Vin (min) (V) 4 Vin (max) (V) 6.2 Vout (max) (V) -5 Vout (min) (V) -5 Duty cycle (max) (%) 100 Features Enable Switch current limit (typ) (A) 2 Switching frequency (min) (kHz) 160 Switching frequency (max) (kHz) 160 Iq (typ) (mA) 1.9 Iout (max) (A) 0.2 Rating Catalog Operating temperature range (°C) -40 to 85 Type Converter
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6
  • Negative 5-V 200-mA Output (VCC >= 4.5 V)
  • \x95 4-V to 6.2-V Input Operating Range
  • \x95 78% Typical Efficiency
  • \x95 160-kHz Fixed-Frequency Current-Mode PWM Controller
  • \x95 EN Input Inhibits Operation and Reduces Supply Current to 1 uA
  • \x95 Soft Start
  • \x95 8-Pin SOIC and DIP Packages
  • \x95 -40°C to 85°C Free-Air Temperature Range
  • \x95 Pin-for-Pin Compatible with MAX735
  • Negative 5-V 200-mA Output (VCC >= 4.5 V)
  • \x95 4-V to 6.2-V Input Operating Range
  • \x95 78% Typical Efficiency
  • \x95 160-kHz Fixed-Frequency Current-Mode PWM Controller
  • \x95 EN Input Inhibits Operation and Reduces Supply Current to 1 uA
  • \x95 Soft Start
  • \x95 8-Pin SOIC and DIP Packages
  • \x95 -40°C to 85°C Free-Air Temperature Range
  • \x95 Pin-for-Pin Compatible with MAX735

The TPS6735 is a fixed negative 5-V output inverting dc/dc converter capable of delivering 200 mA from inputs as low as 4.5 V. The only external components required are an inductor, an output filter capacitor, an input filter capacitor, a reference filter capacitor, and a Schottky rectifier. An enable input is provided to shut down the inverter when a -5-V output is not needed. The typical supply current is 1.9 mA at no-load and is further reduced to 1-uA when the enable input is low.

The TPS6735 is a 160-kHz current-mode pulse-width-modulation (PWM) controller with a p-channel MOSFET power switch. The gate drive uses the -5-V output to reduce the die area needed to realize the 0.4- MOSFET. Soft start is accomplished with the addition of one small capacitor at SS. A 1.22-V reference is available for external loads up to 125 uA.

The TPS6735 is attractive for board-level dc/dc conversion in computer peripherals and in battery-powered equipment requiring high efficiency and low supply current.

The TPS6735 is available in 8-pin DIP and SOIC packages and operates over a free-air temperature range of -40°C to 85°C.

The TPS6735 is a fixed negative 5-V output inverting dc/dc converter capable of delivering 200 mA from inputs as low as 4.5 V. The only external components required are an inductor, an output filter capacitor, an input filter capacitor, a reference filter capacitor, and a Schottky rectifier. An enable input is provided to shut down the inverter when a -5-V output is not needed. The typical supply current is 1.9 mA at no-load and is further reduced to 1-uA when the enable input is low.

The TPS6735 is a 160-kHz current-mode pulse-width-modulation (PWM) controller with a p-channel MOSFET power switch. The gate drive uses the -5-V output to reduce the die area needed to realize the 0.4- MOSFET. Soft start is accomplished with the addition of one small capacitor at SS. A 1.22-V reference is available for external loads up to 125 uA.

The TPS6735 is attractive for board-level dc/dc conversion in computer peripherals and in battery-powered equipment requiring high efficiency and low supply current.

The TPS6735 is available in 8-pin DIP and SOIC packages and operates over a free-air temperature range of -40°C to 85°C.

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Technical documentation

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Type Title Date
* Data sheet Fixed Negative 5-V 200-mA Inverting DC/DC Converter datasheet (Rev. A) 20 Dec 1996
Application note Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 12 Mar 2019

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