Datasheet LT3012 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | 250mA, 4V to 80V Low Dropout Micropower Linear Regulator |
| Seiten / Seite | 16 / 1 — FEATURES. DESCRIPTION. Wide Input Voltage Range: 4V to 80V. Low Quiescent … |
| Dateiformat / Größe | PDF / 188 Kb |
| Dokumentensprache | Englisch |
FEATURES. DESCRIPTION. Wide Input Voltage Range: 4V to 80V. Low Quiescent Current: 40μA. Low Dropout Voltage: 400mV
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LT3012 250mA, 4V to 80V Low Dropout Micropower Linear Regulator
FEATURES DESCRIPTION
n
Wide Input Voltage Range: 4V to 80V
The LT®3012 is a high voltage, micropower low dropout n
Low Quiescent Current: 40μA
linear regulator. The device is capable of supplying 250mA of n
Low Dropout Voltage: 400mV
output current with a dropout voltage of 400mV. Designed n
Output Current: 250mA
for use in battery-powered or high voltage systems, the low n No Protection Diodes Needed quiescent current (40μA operating and 1μA in shutdown) n Adjustable Output from 1.24V to 60V makes the LT3012 an ideal choice. Quiescent current is n 1μA Quiescent Current in Shutdown also well controlled in dropout. n Stable with 3.3μF Output Capacitor Other features of the LT3012 include the ability to operate n Stable with Aluminum, Tantalum or Ceramic with very small output capacitors. The regulator is stable Capacitors with only 3.3μF on the output while most older devices n Reverse-Battery Protection require between 10μF and 100μF for stability. Small ce- n No Reverse Current Flow from Output to Input ramic capacitors can be used without any need for series n Thermal Limiting resistance (ESR) as is common with other regulators. n Thermally Enhanced 16-Lead TSSOP and Internal protection circuitry includes reverse-battery 12-Pin (4mm × 3mm) DFN Packages protection, current limiting, thermal limiting and reverse current protection.
APPLICATIONS
The device is available with an adjustable output with a n 1.24V reference voltage. The LT3012 regulator is available Low Current High Voltage Regulators n in the 16-lead TSSOP and 12 pin low profi le (0.75mm) Regulator for Battery-Powered Systems n (4mm Telecom Applications × 3mm) DFN packages with an exposed pad for n enhanced thermal handling capability. Automotive Applications L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION 5V Supply with Shutdown Dropout Voltage
400 VOUT 350 IN OUT 5V VIN 250mA LT3012 300 5.4V TO 750k 1μF 3.3μF 80V SHDN ADJ 250 GND TAGE (mV) 249k 200 3012 TA01 150
VSHDN OUTPUT
<0.3V OFF DROPOUT VOL 100 >2.0V ON 50 0 0 50 100 150 200 250 OUTPUT CURRENT (mA) 3012 TA02 3012fd 1
FEATURES DESCRIPTION
n
Wide Input Voltage Range: 4V to 80V
The LT®3012 is a high voltage, micropower low dropout n
Low Quiescent Current: 40μA
linear regulator. The device is capable of supplying 250mA of n
Low Dropout Voltage: 400mV
output current with a dropout voltage of 400mV. Designed n
Output Current: 250mA
for use in battery-powered or high voltage systems, the low n No Protection Diodes Needed quiescent current (40μA operating and 1μA in shutdown) n Adjustable Output from 1.24V to 60V makes the LT3012 an ideal choice. Quiescent current is n 1μA Quiescent Current in Shutdown also well controlled in dropout. n Stable with 3.3μF Output Capacitor Other features of the LT3012 include the ability to operate n Stable with Aluminum, Tantalum or Ceramic with very small output capacitors. The regulator is stable Capacitors with only 3.3μF on the output while most older devices n Reverse-Battery Protection require between 10μF and 100μF for stability. Small ce- n No Reverse Current Flow from Output to Input ramic capacitors can be used without any need for series n Thermal Limiting resistance (ESR) as is common with other regulators. n Thermally Enhanced 16-Lead TSSOP and Internal protection circuitry includes reverse-battery 12-Pin (4mm × 3mm) DFN Packages protection, current limiting, thermal limiting and reverse current protection.
APPLICATIONS
The device is available with an adjustable output with a n 1.24V reference voltage. The LT3012 regulator is available Low Current High Voltage Regulators n in the 16-lead TSSOP and 12 pin low profi le (0.75mm) Regulator for Battery-Powered Systems n (4mm Telecom Applications × 3mm) DFN packages with an exposed pad for n enhanced thermal handling capability. Automotive Applications L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION 5V Supply with Shutdown Dropout Voltage
400 VOUT 350 IN OUT 5V VIN 250mA LT3012 300 5.4V TO 750k 1μF 3.3μF 80V SHDN ADJ 250 GND TAGE (mV) 249k 200 3012 TA01 150
VSHDN OUTPUT
<0.3V OFF DROPOUT VOL 100 >2.0V ON 50 0 0 50 100 150 200 250 OUTPUT CURRENT (mA) 3012 TA02 3012fd 1