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UCC39411

ACTIVE

1.125V threshold low power synchronous boost converter

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TPS61070 ACTIVE Adjustable, 600-mA switch, 1200-kHz boost converter in ThinSOT-23 with power-saving mode Lower quiescent current, wider operating range, smaller solution size

Product details

Topology Boost Vin (min) (V) 1 Vin (max) (V) 5.5 Vout (min) (V) 2 Vout (max) (V) 5 Switch current limit (typ) (A) 0.55 Type Converter Regulated outputs (#) 1 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Iq (typ) (mA) 0.048 Features Synchronous Rectification Duty cycle (max) (%) 100 Operating temperature range (°C) -40 to 125 Rating Catalog
Topology Boost Vin (min) (V) 1 Vin (max) (V) 5.5 Vout (min) (V) 2 Vout (max) (V) 5 Switch current limit (typ) (A) 0.55 Type Converter Regulated outputs (#) 1 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Iq (typ) (mA) 0.048 Features Synchronous Rectification Duty cycle (max) (%) 100 Operating temperature range (°C) -40 to 125 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6 TSSOP (PW) 8 19.2 mm² 3 x 6.4
  • 1 V Input Voltage Operation Start-Up Ensured Under Full Load on Main Output, and Operation Down to 0.5 V
  • 200 mW Output Power at Battery Voltages as Low as 0.8 V
  • Secondary 7 V Supply from a Single Inductor
  • Output Fully Disconnected in Shutdown
  • Adaptive Current Mode Control for Optimum Efficiency
  • High Efficiency Over Wide Operating Range
  • 6 µA Shutdown Supply Current
  • Output Reset Function with Programmable Reset Period

  • 1 V Input Voltage Operation Start-Up Ensured Under Full Load on Main Output, and Operation Down to 0.5 V
  • 200 mW Output Power at Battery Voltages as Low as 0.8 V
  • Secondary 7 V Supply from a Single Inductor
  • Output Fully Disconnected in Shutdown
  • Adaptive Current Mode Control for Optimum Efficiency
  • High Efficiency Over Wide Operating Range
  • 6 µA Shutdown Supply Current
  • Output Reset Function with Programmable Reset Period

The UCCx9411 family of low-input voltage, single-inductor-boost converters is optimized to operate from a single or dual alkaline cell, and steps up to a 3.3 V, 5 V, or adjustable output at 200 mW. The UCCx9411 family also provides an auxiliary 7 V output, primarily for the gate-drive supply, which can be used for applications requiring an auxiliary output, such as 5 V, by linear regulating. The primary output starts up under full load at input voltages typically as low as 0.8 V with a ensured max of 1 V, and operates down to 0.5 V once the converter is operating, thereby maximizing battery usage.

The UCCx9411 family is designed to accommodate demanding applications such as pagers and cell phones that require high efficiency over a wide operating range of several milliwatts to a couple of hundred milli-watts. High efficiency at low output current is achieved by optimizing switching and conduction losses with a low total quiescent current. At higher output current, the 0.5 synchronous rectifier along with continuous mode conduction provide high power efficiency. The wide input voltage range of the UCCx9411 family can accommodate other power sources such as NiCd and NiMH.

The UCCx9411 family also provides shutdown control. Packages available are the 8-pin SOIC (D) and 8-pin TSSOP (PW) to optimize board space.

The UCCx9411 family of low-input voltage, single-inductor-boost converters is optimized to operate from a single or dual alkaline cell, and steps up to a 3.3 V, 5 V, or adjustable output at 200 mW. The UCCx9411 family also provides an auxiliary 7 V output, primarily for the gate-drive supply, which can be used for applications requiring an auxiliary output, such as 5 V, by linear regulating. The primary output starts up under full load at input voltages typically as low as 0.8 V with a ensured max of 1 V, and operates down to 0.5 V once the converter is operating, thereby maximizing battery usage.

The UCCx9411 family is designed to accommodate demanding applications such as pagers and cell phones that require high efficiency over a wide operating range of several milliwatts to a couple of hundred milli-watts. High efficiency at low output current is achieved by optimizing switching and conduction losses with a low total quiescent current. At higher output current, the 0.5 synchronous rectifier along with continuous mode conduction provide high power efficiency. The wide input voltage range of the UCCx9411 family can accommodate other power sources such as NiCd and NiMH.

The UCCx9411 family also provides shutdown control. Packages available are the 8-pin SOIC (D) and 8-pin TSSOP (PW) to optimize board space.

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TPS61010 ACTIVE Low Input Voltage Synchronous Boost Converter with Adjustable Output For applications requiring lower Iq or higher output current.

Technical documentation

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Type Title Date
* Data sheet Low Power Synchronous Boost Converter datasheet (Rev. E) 20 Jul 2005
Application note 스트컨버터의 전력계 기본 계산 (Rev. D) PDF | HTML 21 Nov 2022
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 28 Oct 2022

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SOIC (D) 8 View options
TSSOP (PW) 8 View options

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