Datasheet LT3022, LT3022-1.2, LT3022-1.5, LT3022-1.8 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | 1A, 0.9V to 10V, Very Low Dropout Linear Regulator |
| Páginas / Página | 20 / 1 — FEATURES. DESCRIPTION. VIN Range: 0.9V to 10V. Dropout Voltage: 145mV … |
| Formato / tamaño de archivo | PDF / 581 Kb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. VIN Range: 0.9V to 10V. Dropout Voltage: 145mV Typical. Output Current: 1A
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Versión de texto del documento
LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8 1A, 0.9V to 10V, Very Low Dropout Linear Regulator
FEATURES DESCRIPTION
n
VIN Range: 0.9V to 10V
The LT®3022 is a very low dropout voltage (VLDO™) linear n
Dropout Voltage: 145mV Typical
regulator that operates from single input supplies down to n
Output Current: 1A
0.9V. The device supplies 1A output current with 145mV n
Adjustable Output (VREF = VOUT(MIN) = 200mV)
typical dropout voltage. The LT3022 is ideal for low input n
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
voltage to low output voltage applications, providing n Stable with Low ESR, Ceramic Output Capacitors comparable electrical efficiency to a switching regulator. (10µF Minimum) The regulator optimizes stability and transient response n 0.05% Typical Load Regulation from 1mA to 1A with low ESR ceramic output capacitors as small as 10µF. n Quiescent Current: 400µA Typical Other LT3022 features include 0.05% typical line regulation n 7.5µA Typical Quiescent Current in Shutdown and 0.05% typical load regulation. In shutdown, quiescent n Current Limit Protection current typically drops to 7.5µA. Internal protection circuitry n Reverse-Battery Protection with No Reverse Current includes reverse-battery protection, current limiting, ther- n Thermal Limiting with Hysteresis mal limiting with hysteresis and reverse-current protection. n 16-Lead (5mm × 3mm) DFN and MSOP Packages The LT3022 is available as an adjustable device with an output voltage range down to the 200mV reference.
APPLICATIONS
Three fixed output voltages, 1.2V, 1.5V and 1.8V are also n High Efficiency Linear Regulators offered. The LT3022 regulator is available in the thermally n Battery-Powered Systems enhanced low profile (0.75mm) 16-lead (5mm × 3mm) n Logic Supplies DFN and MSOP packages. n Post Regulator for Switching Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Wireless Modems Technology Corporation. VLDO is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. n FPGA Core Supplies
TYPICAL APPLICATION Minimum Input Voltage
1.1 IL = 1A
1.2V to 0.9V, 1A VLDO Regulator
1.0 0.9 0.8 V VOUT IN IN 1.2V OUT 0.9V 0.7 10µF 698Ω 1A LT3022 10µF 1% 0.6 SHDN ADJ 0.5 200Ω GND 1% 0.4 0.3 3022 TA01a MINIMUM INPUT VOLTAGE (V) 0.2 0.1 0–50 –25 0 25 50 75 100 125 TEMPERATURE (°C) 3022 TA01b 3022fb 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Revision History Typical Application Related Parts
FEATURES DESCRIPTION
n
VIN Range: 0.9V to 10V
The LT®3022 is a very low dropout voltage (VLDO™) linear n
Dropout Voltage: 145mV Typical
regulator that operates from single input supplies down to n
Output Current: 1A
0.9V. The device supplies 1A output current with 145mV n
Adjustable Output (VREF = VOUT(MIN) = 200mV)
typical dropout voltage. The LT3022 is ideal for low input n
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
voltage to low output voltage applications, providing n Stable with Low ESR, Ceramic Output Capacitors comparable electrical efficiency to a switching regulator. (10µF Minimum) The regulator optimizes stability and transient response n 0.05% Typical Load Regulation from 1mA to 1A with low ESR ceramic output capacitors as small as 10µF. n Quiescent Current: 400µA Typical Other LT3022 features include 0.05% typical line regulation n 7.5µA Typical Quiescent Current in Shutdown and 0.05% typical load regulation. In shutdown, quiescent n Current Limit Protection current typically drops to 7.5µA. Internal protection circuitry n Reverse-Battery Protection with No Reverse Current includes reverse-battery protection, current limiting, ther- n Thermal Limiting with Hysteresis mal limiting with hysteresis and reverse-current protection. n 16-Lead (5mm × 3mm) DFN and MSOP Packages The LT3022 is available as an adjustable device with an output voltage range down to the 200mV reference.
APPLICATIONS
Three fixed output voltages, 1.2V, 1.5V and 1.8V are also n High Efficiency Linear Regulators offered. The LT3022 regulator is available in the thermally n Battery-Powered Systems enhanced low profile (0.75mm) 16-lead (5mm × 3mm) n Logic Supplies DFN and MSOP packages. n Post Regulator for Switching Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Wireless Modems Technology Corporation. VLDO is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. n FPGA Core Supplies
TYPICAL APPLICATION Minimum Input Voltage
1.1 IL = 1A
1.2V to 0.9V, 1A VLDO Regulator
1.0 0.9 0.8 V VOUT IN IN 1.2V OUT 0.9V 0.7 10µF 698Ω 1A LT3022 10µF 1% 0.6 SHDN ADJ 0.5 200Ω GND 1% 0.4 0.3 3022 TA01a MINIMUM INPUT VOLTAGE (V) 0.2 0.1 0–50 –25 0 25 50 75 100 125 TEMPERATURE (°C) 3022 TA01b 3022fb 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Revision History Typical Application Related Parts