Datasheet LT3024 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulator |
| 页数 / 页 | 20 / 1 — FEATURES. DESCRIPTION. Low Noise: 20μVRMS (10Hz to 100kHz). Low Quiescent … |
| 文件格式/大小 | PDF / 264 Kb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTION. Low Noise: 20μVRMS (10Hz to 100kHz). Low Quiescent Current: 30μA/Output
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LT3024 Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulator
FEATURES DESCRIPTION
n
Low Noise: 20μVRMS (10Hz to 100kHz)
The LT®3024 is a dual, micropower, low noise, low dropout n
Low Quiescent Current: 30μA/Output
regulator. With an external 0.01μF bypass capacitor, output n
Wide Input Voltage Range: 1.8V to 20V
noise drops to 20μVRMS over a 10Hz to 100kHz bandwidth. n
Output Current: 100mA/500mA
Designed for use in battery-powered systems, the low 30μA n
Very Low Shutdown Current: <0.1μA
quiescent current per output makes it an ideal choice. In n
Low Dropout Voltage: 300mV at 100mA/500mA
shutdown, quiescent current drops to less than 0.1μA. n Adjustable Outputs from 1.22V to 20V Shutdown control is independent for each output, allowing n Stable with 1μF/3.3μF Output Capacitor for fl exibility in power management. The device is capable n Stable with Aluminum, Tantalum or of operating over an input voltage range of 1.8V to 20V. The Ceramic Capacitors device can supply 100mA of output current from Output n Reverse Battery Protected 2 with a dropout voltage of 300mV. Output 1 can supply n No Reverse Current 500mA of output current with a dropout voltage of 300mV. n No Protection Diodes Needed Quiescent current is well controlled in dropout. n Overcurrent and Overtemperature Protected The LT3024 regulator is stable with output capacitors as n Thermally Enhanced 16-Lead TSSOP and 12-Lead low as 1μF for the 100mA output and 3.3μF for the 500mA (4mm × 3mm) DFN Packages output. Small ceramic capacitors can be used without the series resistance required by other regulators.
APPLICATIONS
Internal protection circuitry includes reverse-battery n Cellular Phones protection, current limiting, thermal limiting and reverse n Pagers current protection. The device is available as an adjust- n Battery-Powered Systems able device with a 1.22V reference voltage. The LT3024 n Frequency Synthesizers regulator is available in the thermally enhanced 16-lead n Wireless Modems TSSOP and 12-lead, low profi le (4mm × 3mm × 0.75mm) L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other DFN packages. trademarks are the property of their respective owners.
TYPICAL APPLICATION 3.3V/2.5V Low Noise Regulators 10Hz to 100kHz Output Noise
3.3V AT 500mA IN OUT1 20μV V RMS NOISE IN SHDN1 0.01μF 10μF 3.7V TO 1μF 422k 20V SHDN2 BYP1 ADJ1 249k LT3024 VOUT 20μV 100μV/DIV RMS 2.5V AT 100mA OUT2 20μVRMS NOISE 0.01μF 10μF 261k BYP2 ADJ2 GND 249k 3024 TA01b 3024 TA01a 3024fa 1
FEATURES DESCRIPTION
n
Low Noise: 20μVRMS (10Hz to 100kHz)
The LT®3024 is a dual, micropower, low noise, low dropout n
Low Quiescent Current: 30μA/Output
regulator. With an external 0.01μF bypass capacitor, output n
Wide Input Voltage Range: 1.8V to 20V
noise drops to 20μVRMS over a 10Hz to 100kHz bandwidth. n
Output Current: 100mA/500mA
Designed for use in battery-powered systems, the low 30μA n
Very Low Shutdown Current: <0.1μA
quiescent current per output makes it an ideal choice. In n
Low Dropout Voltage: 300mV at 100mA/500mA
shutdown, quiescent current drops to less than 0.1μA. n Adjustable Outputs from 1.22V to 20V Shutdown control is independent for each output, allowing n Stable with 1μF/3.3μF Output Capacitor for fl exibility in power management. The device is capable n Stable with Aluminum, Tantalum or of operating over an input voltage range of 1.8V to 20V. The Ceramic Capacitors device can supply 100mA of output current from Output n Reverse Battery Protected 2 with a dropout voltage of 300mV. Output 1 can supply n No Reverse Current 500mA of output current with a dropout voltage of 300mV. n No Protection Diodes Needed Quiescent current is well controlled in dropout. n Overcurrent and Overtemperature Protected The LT3024 regulator is stable with output capacitors as n Thermally Enhanced 16-Lead TSSOP and 12-Lead low as 1μF for the 100mA output and 3.3μF for the 500mA (4mm × 3mm) DFN Packages output. Small ceramic capacitors can be used without the series resistance required by other regulators.
APPLICATIONS
Internal protection circuitry includes reverse-battery n Cellular Phones protection, current limiting, thermal limiting and reverse n Pagers current protection. The device is available as an adjust- n Battery-Powered Systems able device with a 1.22V reference voltage. The LT3024 n Frequency Synthesizers regulator is available in the thermally enhanced 16-lead n Wireless Modems TSSOP and 12-lead, low profi le (4mm × 3mm × 0.75mm) L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other DFN packages. trademarks are the property of their respective owners.
TYPICAL APPLICATION 3.3V/2.5V Low Noise Regulators 10Hz to 100kHz Output Noise
3.3V AT 500mA IN OUT1 20μV V RMS NOISE IN SHDN1 0.01μF 10μF 3.7V TO 1μF 422k 20V SHDN2 BYP1 ADJ1 249k LT3024 VOUT 20μV 100μV/DIV RMS 2.5V AT 100mA OUT2 20μVRMS NOISE 0.01μF 10μF 261k BYP2 ADJ2 GND 249k 3024 TA01b 3024 TA01a 3024fa 1