LT1964 Linear Technology Corporation, LT1964 Datasheet
LT1964
Available stocks
Related parts for LT1964
LT1964 Summary of contents
Page 1
... The device is available with a fixed output voltage of –5V and as an adjustable device with a –1.22V reference voltage. The LT1964 regulators are available in a low profile (1mm) ThinSOT package. , LTC and LT are registered trademarks of Linear Technology Corporation. ...
Page 2
... PARAMETER CONDITIONS Regulated Output Voltage LT1964-5 (Notes 3, 9) ADJ Pin Voltage LT1964 (Notes Line Regulation LT1964-5 LT1964 (Note 2) Load Regulation LT1964-5 LT1964 2 U (Note 1) SHDN Pin Voltage (with Respect to GND Pin) ........................ –20V, 15V Output Short-Circuit Duration .......................... Indefinite Operating Junction Temperature Range (Note 10) ............................... – ...
Page 3
... Note 11: A parasitic diode exists internally on the LT1964 between the OUT, ADJ and SHDN pins and the IN pin. The OUT, ADJ and SHDN pins cannot be pulled more than 0.5V more negative than the IN pin during fault conditions, and must remain at a voltage more positive than the IN pin during operation ...
Page 4
... OUTPUT CURRENT (mA) 1964 G01 Quiescent Current – –6V IN – 250k ( FOR LT1964- – FOR LT1964-5) –40 L – –30 SHDN IN –25 –20 –15 – –5 SHDN 0 –50 – ...
Page 5
... W U TYPICAL PERFOR A CE CHARACTERISTICS LT1964-BYP, LT1964-SD GND Pin Current –3 *FOR V = –1.22V J SHDN IN OUT –2 6 –200mA* L –2 12 –100mA* L –1 24.4 L –1 –50mA 122 –10mA* –0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 ...
Page 6
... G21 RMS Output Noise vs Bypass Capacitor 140 OUT I = –200mA L 120 f = 10Hz TO 100kHz LT1964-5 100 LT1964-BYP 100 1k 10k C (pF) BYP 1964 G24 LT1964-5, 10Hz to 100kHz Output Noise 100pF BYP 1ms/DIV OUT 1964 G27.tif I = – 200mA LOAD 1964f ...
Page 7
... The SHDN pin is referenced to the GND pin for regulator control, allowing the LT1964 to be driven by either positive or negative logic. The output of the LT1964 will be off when the SHDN pin is pulled within 0.8V of GND. Pulling the SHDN pin more than –1.9V or +1.6V will turn the LT1964 on ...
Page 8
... ADJ (Pin 4, Adjustable Devices only): For the Adjustable LT1964, this is the Input to the Error Amplifier. The ADJ pin has a bias current of 30nA that flows out of the pin. The ADJ pin voltage is –1.22V referenced to ground, and the ...
Page 9
... LT1964- Output Capacitance and Transient Response R1 The LT1964 is designed to be stable with a wide range of + output capacitors. The ESR of the output capacitor affects stability, most notably with small capacitors. A minimum R2 output capacitor with an ESR of 3 ...
Page 10
... Pin Current curves in the Typical Performance Character- istics. Power dissipation will be equal to the sum of the two components listed above. The LT1964 series regulators have internal thermal limit- ing designed to protect the device during overload condi- X5R tions. For continuous normal conditions the maximum junction temperature rating of 125 C must not be exceeded ...
Page 11
... For normal opera- tion, the junction temperature should not exceed 125 C. The output of the LT1964 can be pulled above ground without damaging the device. If the input is left open circuit or grounded, the output can be pulled above ground by 20V ...
Page 12
... LT1964 PACKAGE DESCRIPTIO 0.62 MAX 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6 ...