Datasheet LT3029 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Dual 500mA/500mA Low Dropout, Low Noise, Micropower Linear Regulator |
| Páginas / Página | 20 / 1 — FeaTures. DescripTion. Output Current: 500mA per Channel. Low Dropout … |
| Formato / tamaño de archivo | PDF / 1.7 Mb |
| Idioma del documento | Inglés |
FeaTures. DescripTion. Output Current: 500mA per Channel. Low Dropout Voltage: 300mV. Low Noise: 20µVRMS (10Hz to 100kHz)
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LT3029 Dual 500mA/500mA Low Dropout, Low Noise, Micropower Linear Regulator
FeaTures DescripTion
n
Output Current: 500mA per Channel
The LT®3029 is a dual, micropower, low noise, low drop- n
Low Dropout Voltage: 300mV
out linear regulator. The device operates either with a n
Low Noise: 20µVRMS (10Hz to 100kHz)
common input supply or independent input supplies for n
Low Quiescent Current: 55µA per Channel
each channel, over an input voltage range of 1.8V to 20V. n Wide Input Voltage Range: 1.8V to 20V (Common or Each output supplies up to 500mA of output current with Independent Input Supply) a typical dropout voltage of 300mV. Quiescent current is n Adjustable Output: 1.215V Reference Voltage well controlled in dropout. With an external 10nF bypass n Very Low Quiescent Current in Shutdown: <1µA per capacitor, output noise is only 20µVRMS over a 10Hz to Channel 100kHz bandwidth. Designed for use in battery-powered n Stable with 3.3µF Minimum Output Capacitor systems, the low 55µA quiescent current per channel n Stable with Ceramic, Tantalum or Aluminum makes it an ideal choice. In shutdown, quiescent current Electrolytic Capacitors drops to less than 1µA. Shutdown control is independent n Reverse-Battery and Reverse Output-to-Input for each channel, allowing for flexible power management. Protection The LT3029 optimizes stability and transient response with n Current Limit with Foldback and Thermal Shutdown low ESR ceramic output capacitors, requiring a minimum n Tracking/Sequencing Capability: Compatible with of only 3.3µF. The regulator does not require the addition LTC292X Power Supply Tracking ICs of ESR, as is common with other regulators. n Thermally Enhanced 16-Lead MSOP and 16-Lead (4mm × 3mm) DFN Packages Internal circuitry provides reverse-battery protection, reverse-current protection, current limiting with foldback
applicaTions
and thermal shutdown. The device is available as an adjustable output voltage device with a 1.215V reference n General Purpose Linear Regulator voltage. The LT3029 is offered in the thermally enhanced n Battery-Powered Systems 16-lead MSOP and 16-lead, low profile (4mm × 3mm × n Microprocessor Core/Logic Supplies 0.75mm) DFN packages. n Post Regulator for Switching Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property n Tracking/Sequencing Power Supplies of their respective owners.
Typical applicaTion Dropout Voltage vs Load Current 2.5V
400
IN to 1.5V/1.8V Application
TJ = 25°C 350 VIN VOUT1 IN1 OUT1 2.5V 1.8V LT3029 10nF 300 3.3µF 113k 500mA 3.3µF IN2 BYP1 1% 250 ADJ1 TAGE (mV) 237k 200 SHDN1 1% V 150 OUT2 SHDN2 OUT2 1.5V 500mA DROPOUT VOL 100 10nF 54.9k 3.3µF BYP2 1% 50 ADJ2 GND 237k 0 1% 0 50 100 150 200 250 300 350 400 450 500 OUTPUT CURRENT (mA) 3029 TA01 3029 TA01b 3029fb For more information www.linear.com/LT3029 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts
FeaTures DescripTion
n
Output Current: 500mA per Channel
The LT®3029 is a dual, micropower, low noise, low drop- n
Low Dropout Voltage: 300mV
out linear regulator. The device operates either with a n
Low Noise: 20µVRMS (10Hz to 100kHz)
common input supply or independent input supplies for n
Low Quiescent Current: 55µA per Channel
each channel, over an input voltage range of 1.8V to 20V. n Wide Input Voltage Range: 1.8V to 20V (Common or Each output supplies up to 500mA of output current with Independent Input Supply) a typical dropout voltage of 300mV. Quiescent current is n Adjustable Output: 1.215V Reference Voltage well controlled in dropout. With an external 10nF bypass n Very Low Quiescent Current in Shutdown: <1µA per capacitor, output noise is only 20µVRMS over a 10Hz to Channel 100kHz bandwidth. Designed for use in battery-powered n Stable with 3.3µF Minimum Output Capacitor systems, the low 55µA quiescent current per channel n Stable with Ceramic, Tantalum or Aluminum makes it an ideal choice. In shutdown, quiescent current Electrolytic Capacitors drops to less than 1µA. Shutdown control is independent n Reverse-Battery and Reverse Output-to-Input for each channel, allowing for flexible power management. Protection The LT3029 optimizes stability and transient response with n Current Limit with Foldback and Thermal Shutdown low ESR ceramic output capacitors, requiring a minimum n Tracking/Sequencing Capability: Compatible with of only 3.3µF. The regulator does not require the addition LTC292X Power Supply Tracking ICs of ESR, as is common with other regulators. n Thermally Enhanced 16-Lead MSOP and 16-Lead (4mm × 3mm) DFN Packages Internal circuitry provides reverse-battery protection, reverse-current protection, current limiting with foldback
applicaTions
and thermal shutdown. The device is available as an adjustable output voltage device with a 1.215V reference n General Purpose Linear Regulator voltage. The LT3029 is offered in the thermally enhanced n Battery-Powered Systems 16-lead MSOP and 16-lead, low profile (4mm × 3mm × n Microprocessor Core/Logic Supplies 0.75mm) DFN packages. n Post Regulator for Switching Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property n Tracking/Sequencing Power Supplies of their respective owners.
Typical applicaTion Dropout Voltage vs Load Current 2.5V
400
IN to 1.5V/1.8V Application
TJ = 25°C 350 VIN VOUT1 IN1 OUT1 2.5V 1.8V LT3029 10nF 300 3.3µF 113k 500mA 3.3µF IN2 BYP1 1% 250 ADJ1 TAGE (mV) 237k 200 SHDN1 1% V 150 OUT2 SHDN2 OUT2 1.5V 500mA DROPOUT VOL 100 10nF 54.9k 3.3µF BYP2 1% 50 ADJ2 GND 237k 0 1% 0 50 100 150 200 250 300 350 400 450 500 OUTPUT CURRENT (mA) 3029 TA01 3029 TA01b 3029fb For more information www.linear.com/LT3029 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts