1 LT1963 series , Low Noise, Fast Transient Response LDO Regulators U. FEATURES DESCRIPTIO . Optimized for Fast Transient Response The LT 1963 series are low dropout regulators optimized Output Current: for fast transient response. The devices are capable of Dropout Voltage: 340mV supplying of output current with a dropout voltage of Low Noise: 40 VRMS (10Hz to 100kHz) 340mV. Operating quiescent current is 1mA, dropping to 1mA Quiescent Current < 1 A in shutdown. Quiescent current is well controlled; it No Protection Diodes Needed does not rise in dropout as it does with many other Controlled Quiescent Current in Dropout regulators. In addition to fast transient response, the Fixed Output Voltages: , , , LT1963 regulators have very low output noise which Adjustable Output from to 20V makes them ideal for sensitive RF supply applications.
2 < 1 A Quiescent Current in Shutdown Output voltage range is from to 20V. The LT1963. Stable with 10 F Output Capacitor regulators are stable with output capacitors as low as Reverse Battery Protection 10 F. Internal protection circuitry includes reverse battery No Reverse Current protection, current limiting, thermal limiting and reverse Thermal Limiting current protection. The devices are available in fixed 5-Lead TO-220, DD, 3-Lead SOT-223, 8-Lead SO output voltages of , , , and as an and 16-Lead TSSOP Packages adjustable device with a reference voltage. The U LT1963 regulators are available in 5-lead TO-220, DD, APPLICATIO S 3-lead SOT-223, 8-lead SO, and Exposed Pad 16-lead.
3 TSSOP packages. to Logic Power Supplies Post Regulator for Switching Supplies , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by Patents, including 6118263, 6144250. U. TYPICAL APPLICATION Dropout Voltage 400. 350. to Regulator DROPOUT VOLTAGE (mV). 300. 250. IN OUT. + + VIN > 3V 10 F 10 F 200. SHDN SENSE 150. GND 100. 1963 TA01. 50. 0. 0 OUTPUT CURRENT (A). 1963 TA02. 1963fc 1. LT1963 series W W W U. ABSOLUTE AXI U RATI GS (Note 1). IN Pin Voltage .. 20V SHDN Pin Voltage .. 20V. OUT Pin Voltage .. 20V Output Short-Circuit Duration.
4 Indefinite Input to Output Differential Voltage (Note 2) .. 20V Operating Junction Temperature Range 40 C to 125 C. SENSE Pin Voltage .. 20V Storage Temperature Range .. 65 C to 150 C. ADJ Pin Voltage .. 7V Lead Temperature (Soldering, 10 sec).. 300 C. U W U. PACKAGE/ORDER I FOR ATIO. TOP VIEW. FRONT VIEW FRONT VIEW. SENSE/ GND 1 16 GND. 5 SENSE/ADJ* 5 ADJ* NC 2 15 NC. 4 OUT 4 OUT OUT 3 14 IN. TAB IS 3. 3 GND GND. GND OUT 4. 17. 13 IN *PIN 6 = SENSE FOR 2 IN 2 IN. OUT 5 12 IN 1 SHDN 1 SHDN SENSE/ADJ* 6 11 NC. Q PACKAGE TAB IS T PACKAGE = ADJ FOR LT1963. GND 5-LEAD PLASTIC TO-220 GND 7 10 SHDN. 5-LEAD PLASTIC DD. GND 8 9 GND. *PIN 5 = SENSE FOR *PIN 5 = SENSE FOR FE PACKAGE.
5 16-LEAD PLASTIC TSSOP. = ADJ FOR LT1963 = ADJ FOR LT1963 EXPOSED PAD (PIN 17) IS GND. MUST BE. TJMAX = 150 C, JA = 30 C/ W TJMAX = 150 C, JA = 50 C/ W SOLDERED TO THE PCB. TJMAX = 150 C, JA = 38 C/ W. ORDER PART NUMBER ORDER PART NUMBER ORDER PART NUMBER FE PART MARKING. LT1963EQ LT1963ET LT1963 EFE 1963 EFE. 1963 EFE15. 1963 EFE18. 1963 EFE25. 1963 EFE33. TOP VIEW. FRONT VIEW. OUT 1 8 IN. 3 OUT SENSE/ADJ* 2 7 GND. TAB IS GND 3 6 GND. GND 2 GND. NC 4 5 SHDN. 1 IN S8 PACKAGE. 8-LEAD PLASTIC SO. ST PACKAGE *PIN 2 = SENSE FOR 3-LEAD PLASTIC SOT-223. TJMAX = 150 C, JA = 50 C/ W = ADJ FOR LT1963. TJMAX = 150 C, JA = 70 C/ W. ORDER PART NUMBER ST PART MARKING ORDER PART NUMBER S8 PART MARKING.
6 196315 LT1963ES8 1963. 196318 196315. 196325 196318. 196333 196325. 196333. Order Options Tape and Reel: Add #TR. Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF. Lead Free Part Marking: Consult LTC Marketing for parts specified with wider operating temperature ranges. 1963fc 2. LT1963 series ELECTRICAL CHARACTERISTICS. The denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25 C. (Note 3). PARAMETER CONDITIONS MIN TYP MAX UNITS. Minimum Input Voltage (Notes 4,12) ILOAD = V. ILOAD = < VIN < 20V, 1mA < ILOAD < V. Regulated Output Voltage (Note 5) VIN = , ILOAD = 1mA V.
7 < VIN < 20V, 1mA < ILOAD < V. VIN = , ILOAD = 1mA V. < VIN < 20V, 1mA < ILOAD < V. VIN = 3V, ILOAD = 1mA V. < VIN < 20V, 1mA < ILOAD < V. VIN = , ILOAD = 1mA V. < VIN < 20V, 1mA < ILOAD < V. ADJ Pin Voltage LT1963 VIN = , ILOAD = 1mA V. (Notes 4, 5) < VIN < 20V, 1mA < ILOAD < V. Line Regulation VIN = to 20V, ILOAD = 1mA 10 mV. VIN = to 20V, ILOAD = 1mA 10 mV. VIN = 3V to 20V, ILOAD = 1mA 10 mV. VIN = to 20V, ILOAD = 1mA 10 mV. LT1963 (Note 4) VIN = to 20V, ILOAD = 1mA 10 mV. Load Regulation VIN = , ILOAD = 1mA to 2 9 mV. VIN = , ILOAD = 1mA to 18 mV. VIN = , ILOAD = 1mA to 2 10 mV. VIN = , ILOAD = 1mA to 20 mV. VIN = , ILOAD = 1mA to 15 mV.
8 VIN = , ILOAD = 1mA to 30 mV. VIN = , ILOAD = 1mA to 3 20 mV. VIN = , ILOAD = 1mA to 35 mV. LT1963 (Note 4) VIN = , ILOAD = 1mA to 2 8 mV. VIN = , ILOAD = 1mA to 15 mV. Dropout Voltage ILOAD = 1mA V. VIN = VOUT(NOMINAL) ILOAD = 1mA V. (Notes 6, 7, 12) ILOAD = 100mA V. ILOAD = 100mA V. ILOAD = 500mA V. ILOAD = 500mA V. ILOAD = V. ILOAD = V. GND Pin Current ILOAD = 0mA mA. VIN = VOUT(NOMINAL) + 1V ILOAD = 1mA mA. (Notes 6, 8) ILOAD = 100mA mA. ILOAD = 500mA 15 25 mA. ILOAD = 80 120 mA. Output Voltage Noise COUT = 10 F, ILOAD = , BW = 10Hz to 100kHz 40 VRMS. ADJ Pin Bias Current (Notes 4, 9) 3 10 A. Shutdown Threshold VOUT = Off to On 2 V.
9 VOUT = On to Off V. SHDN Pin Current VSHDN = 0V 1 A. (Note 10) VSHDN = 20V 3 30 A. Quiescent Current in Shutdown VIN = 6V, VSHDN = 0V 1 A. Ripple Rejection VIN VOUT = (Avg), VRIPPLE = , 55 63 dB. fRIPPLE = 120Hz, ILOAD = 1963fc 3. LT1963 series ELECTRICAL CHARACTERISTICS. The denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25 C. (Note 3). PARAMETER CONDITIONS MIN TYP MAX UNITS. Current Limit VIN = 7V, VOUT = 0V 2 A. VIN = VOUT(NOMINAL) + 1V, VOUT = A. Input Reverse Leakage Current (Note 13) Q, T, S8 Packages VIN = 20V, VOUT = 0V 1 mA. ST Package VIN = 20V, VOUT = 0V 2 mA.
10 Reverse Output Current (Note 11) VOUT = , VIN < 600 1200 A. VOUT = , VIN < 600 1200 A. VOUT = , VIN < 600 1200 A. VOUT = , VIN < 600 1200 A. LT1963 (Note 4) VOUT = , VIN < 300 600 A. Note 1: Absolute Maximum Ratings are those values beyond which the life external resistor divider (two resistors) for an output voltage of of a device may be impaired. The external resistor divider will add a 300 A DC load on the output. Note 2: Absolute maximum input to output differential voltage can not be Note 7: Dropout voltage is the minimum input to output voltage differential achieved with all combinations of rated IN pin and OUT pin voltages.