Datasheet LT3023 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | Dual 100mA, Low Dropout, Low Noise, Micropower Regulator |
| 页数 / 页 | 16 / 1 — FEATURES. DESCRIPTION. Low Noise: 20μVRMS (10Hz to 100kHz). Low Quiescent … |
| 文件格式/大小 | PDF / 281 Kb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTION. Low Noise: 20μVRMS (10Hz to 100kHz). Low Quiescent Current: 20μA/Channel
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LT3023 Dual 100mA, Low Dropout, Low Noise, Micropower Regulator
FEATURES DESCRIPTION
n
Low Noise: 20μVRMS (10Hz to 100kHz)
The LT®3023 is a dual, micropower, low noise, low drop- n
Low Quiescent Current: 20μA/Channel
out regulator. With an external 0.01μF bypass capacitor, n
Wide Input Voltage Range: 1.8V to 20V
output noise drops to 20μVRMS over a 10Hz to 100kHz n
Output Current: 100mA/Channel
bandwidth. Designed for use in battery-powered systems, n
Very Low Shutdown Current: <0.1μA
the low 20μA quiescent current per channel makes it an n
Low Dropout Voltage: 300mV at 100mA
ideal choice. In shutdown, quiescent current drops to less n Adjustable Output from 1.22V to 20V than 0.1μA. Shutdown control is independent for each n Stable with 1μF Output Capacitor channel, allowing for fl exibility in power management. The n Stable with Aluminum, Tantalum or device is capable of operating over an input voltage from Ceramic Capacitors 1.8V to 20V, and can supply 100mA of output current from n Reverse Battery Protected each channel with a dropout voltage of 300mV. Quiescent n No Reverse Current current is well controlled in dropout. n No Protection Diodes Needed The LT3023 regulator is stable with output capacitors as n Overcurrent and Overtemperature Protected low as 1μF. Small ceramic capacitors can be used without n Thermally Enhanced 10-Lead MSOP and DFN the series resistance required by other regulators. Packages Internal protection circuitry includes reverse battery
APPLICATIONS
protection, current limiting, thermal limiting and reverse current protection. The device is available as an adjust- n Cellular Phones able device with a 1.22V reference voltage. The LT3023 n Pagers regulator is available in the thermally enhanced 10-lead n Battery-Powered Systems MSOP and DFN packages. n Frequency Synthesizers L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other n Wireless Modems trademarks are the property of their respective owners.
TYPICAL APPLICATION 3.3V/2.5V Low Noise Regulators 10Hz to 100kHz Output Noise
3.3V AT100mA IN OUT1 VIN 20μVRMS NOISE 3.7V TO 1μF SHDN1 0.01μF 10μF 20V 422k SHDN2 BYP1 ADJ1 249k LT3023 VOUT 20μV 100μV/DIV RMS 2.5V AT100mA OUT2 20μVRMS NOISE 0.01μF 10μF 261k BYP2 ADJ2 3023 TA01b GND 249k 3023 TA01 3023fa 1
FEATURES DESCRIPTION
n
Low Noise: 20μVRMS (10Hz to 100kHz)
The LT®3023 is a dual, micropower, low noise, low drop- n
Low Quiescent Current: 20μA/Channel
out regulator. With an external 0.01μF bypass capacitor, n
Wide Input Voltage Range: 1.8V to 20V
output noise drops to 20μVRMS over a 10Hz to 100kHz n
Output Current: 100mA/Channel
bandwidth. Designed for use in battery-powered systems, n
Very Low Shutdown Current: <0.1μA
the low 20μA quiescent current per channel makes it an n
Low Dropout Voltage: 300mV at 100mA
ideal choice. In shutdown, quiescent current drops to less n Adjustable Output from 1.22V to 20V than 0.1μA. Shutdown control is independent for each n Stable with 1μF Output Capacitor channel, allowing for fl exibility in power management. The n Stable with Aluminum, Tantalum or device is capable of operating over an input voltage from Ceramic Capacitors 1.8V to 20V, and can supply 100mA of output current from n Reverse Battery Protected each channel with a dropout voltage of 300mV. Quiescent n No Reverse Current current is well controlled in dropout. n No Protection Diodes Needed The LT3023 regulator is stable with output capacitors as n Overcurrent and Overtemperature Protected low as 1μF. Small ceramic capacitors can be used without n Thermally Enhanced 10-Lead MSOP and DFN the series resistance required by other regulators. Packages Internal protection circuitry includes reverse battery
APPLICATIONS
protection, current limiting, thermal limiting and reverse current protection. The device is available as an adjust- n Cellular Phones able device with a 1.22V reference voltage. The LT3023 n Pagers regulator is available in the thermally enhanced 10-lead n Battery-Powered Systems MSOP and DFN packages. n Frequency Synthesizers L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other n Wireless Modems trademarks are the property of their respective owners.
TYPICAL APPLICATION 3.3V/2.5V Low Noise Regulators 10Hz to 100kHz Output Noise
3.3V AT100mA IN OUT1 VIN 20μVRMS NOISE 3.7V TO 1μF SHDN1 0.01μF 10μF 20V 422k SHDN2 BYP1 ADJ1 249k LT3023 VOUT 20μV 100μV/DIV RMS 2.5V AT100mA OUT2 20μVRMS NOISE 0.01μF 10μF 261k BYP2 ADJ2 3023 TA01b GND 249k 3023 TA01 3023fa 1