LTC1255CS8 Linear Technology, LTC1255CS8 Datasheet
LTC1255CS8
Specifications of LTC1255CS8
Available stocks
Related parts for LTC1255CS8
LTC1255CS8 Summary of contents
Page 1
FEATURE S Fully Enhances N-Channel Power MOSFETs 12 A Standby Current Operates at Supply Voltages from 9V to 24V Short Circuit Protection Easily Protected Against Supply Transients Controlled Switching ON and OFF Times No External Charge Pump Components Compatible With ...
Page 2
... GATE 24V 36V (Note 2) S GATE SEN 18V 30V S GATE V = 24V 36V S GATE ORDER PART TOP VIEW NUMBER 8 DS2 LTC1255CS8 7 GATE 2 LTC1255IS8 IN2 5 S8 PART MARKING S8 PACKAGE 1255 = 150 C/ W 1255I JA MIN TYP MAX 160 400 350 800 600 1200 2 0 100 ...
Page 3
ELECTRICAL C HARA TERISTICS C SYMBOL PARAMETER t Turn-ON Time ON t Turn-OFF Time OFF t Short-Circuit Turn-OFF Time SC The denotes specifications which apply over the full operating temperature range. Note 1: Quiescent current OFF is for both channels ...
Page 4
LTC1255 W U TYPICAL PERFOR A Input Threshold Voltage 2.4 2.2 2.0 1.8 1 1.4 V 1.2 OFF 1.0 0.8 0.6 0 SUPPLY VOLTAGE (V) LTC1255 • TPC04 Turn-ON Time 1000 ...
Page 5
CTIO S Input Pin The LTC1255 input pin is active high and activates all of the protection and charge pump circuitry when switched ON. The LTC1255 logic and shutdown inputs are high impedance CMOS gates ...
Page 6
LTC1255 U OPERATIO Internal Voltage Regulation The output of the TTL-to-CMOS converter drives two regulated supplies which power the low voltage CMOS logic and analog blocks. The regulator outputs are isolated from each other so that the noise generated by ...
Page 7
U U APPLICATIO S I FOR ATIO MOSFET AND LOAD PROTECTION The LTC1255 protects the power MOSFET switch by removing drive from the gate as soon as an overcurrent condition is detected. Resistive and inductive loads can be protected with ...
Page 8
LTC1255 U U APPLICATIO S I FOR ATIO of sensitive electrical loads. (Resistor R2, and the diode D1, provide a direct path for the LTC1255 protection circuitry to quickly discharge the gate in the event of an overcurrent condition.) The ...
Page 9
U U APPLICATIO S I FOR ATIO 18V C DELAY 0. DELAY V S 100k DS1 1N4148 1/2 LTC1255 IN1 G1 GND Figure 6. Using a Speed-Up Diode Current Limited Power Supplies The LTC1255 requires at least 3.5V ...
Page 10
LTC1255 U U APPLICATIO S I FOR ATIO The switches can either be turned OFF by the controlling logic during these transients or latched OFF above 30V by holding the drain sense pin low as shown in Figure 9. Switch ...
Page 11
TYPICAL APPLICATIO Cell Battery Switch and 5V Ramped Load Switch with 12 A Standby Current and Optional 3A Overcurrent Shutdown 18V TO 30V 1N5400 FROM BATTERY 9.1V CHARGER MMBZ5239BL CELL 10k BATTERY PACK ...
Page 12
LTC1255 TYPICAL APPLICATIO S Low Frequency (f 14V 1N4148 OFF 60k SLOW 30k + MED 15k FAST 1k 1N4148 0.1 F Dual Automotive Lamp Dimmer with Controlled Rise and Fall Times 14V + 10 F MR2535L 50V + 1N4148 10 ...
Page 13
TYPICAL APPLICATIO S 18V to 32V Operation with Overcurrent Shutdown and Optional 18V TO 32V 24V 1N5252B Bootstrapped Gate Driver (100Hz < 24V + DS1 1/2 LTC1255 G1 FROM IN1 P, ETC. GND ...
Page 14
LTC1255 TYPICAL APPLICATIO 24V + 5V 1/4 74C02 1/4 74C02 1/4 74C02 DIRECTION DISABLE High-Side DC Motor Driver With Electronic Braking and 18V + 5V 1/4 74C02 1/4 74C02 RUN/COAST BRAKE *SIZE RESISTOR TO DISSIPATE ENERGY REGENERATED ...
Page 15
... LOGIC D Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U Stepper Motor Driver with Overcurrent Protection + 0 ...
Page 16
... MIN (0.508) MIN 0.018 ± 0.003 (0.457 ± 0.076) N8 0393 0.150 – 0.157 (3.810 – 3.988 0.004 – 0.010 (0.101 – 0.254) 0.050 (1.270) BSC SO8 0393 LT/GP 0493 10K REV 0 LINEAR TECHNOLOGY CORPORATION 1993 ...