LTC4255CG Linear Technology, LTC4255CG Datasheet
LTC4255CG
Specifications of LTC4255CG
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LTC4255CG Summary of contents
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... External switches and current sense resistors allow easy scaling of current and power dissipation levels and pro- vide the maximum protection against voltage and current spikes. The LTC4255 is available in the 28-pin SSOP package. , LTC and LT are registered trademarks of Linear Technology Corporation trademark of Philips Electronics N.V. 12V ...
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... OUT OUT EE (V – DGND 50mA, RELAY On RELAY RELAY (V – DGND 50mA, RELAY RELAY RELAY Off (Note 5) SDA, FAULT 3mA U W ORDER PART TOP VIEW NUMBER 28 OUT1 27 GATE1 LTC4255CG 26 SENSE1 25 OUT2 24 GATE2 23 SENSE2 OUT3 20 GATE3 19 SENSE3 18 OUT4 17 GATE4 16 SENSE4 15 AGND G PACKAGE ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER V Digital Input Low Voltage ILD V Digital Input High Voltage IHD R AD0 to AD4 Pullup Resistors Characteristics t Current Limit Filter Time CL ...
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LTC4255 W U TYPICAL PERFOR A CE CHARACTERISTICS (Relays Off 1.290 1.280 1.270 1.260 1.250 1.240 10.8 11.3 11.8 12.3 12.8 13.3 V (V) CC 4255 G01 I vs Temperature ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS OUT OUT 0 –0.2 –0.4 –0.6 –0.8 –1.0 –1.2 –1 –48V EE –1.6 –50 –40 –20 –10 –30 V (V) OUT 4255 G10 ...
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LTC4255 CTIO S FAULT (Pin 1): Open-Drain FAULT Output. Pulls low when a short-circuit or open circuit fault occurs. The signal can be used to generate a fault condition interrupt to the host controller eliminating ...
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U U REGISTER DEFI ITIO S Register 1: Control Register ( Write Only) A0: Switch 1 Enable. Logic high turns on Port 1 switch, logic low turns off the Port 1 switch. A1: Switch 2 Enable. Logic high turns on ...
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LTC4255 U U REGISTER DEFI ITIO S Register 4: Status Register 2 (Read Only) D0: Current Limit Fault Status for Port 1. Logic high indicates a short-circuit has been detected on Port 1. D1: Current Limit Fault Status for Port ...
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DIAGRA S SCL SDA AD4 AD3 AD2 AD1 AD0 0 1 START BY MASTER FRAME 1 SERIAL BUS ADDRESS BYTE SCL SDA AD4 AD3 AD2 AD1 AD0 0 1 START BY MASTER FRAME 1 ...
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LTC4255 DIAGRA S SCL SDA AD4 AD3 AD2 AD1 AD0 0 1 START BY MASTER FRAME 1 SERIAL BUS ADDRESS BYTE SCL SDA 0 AD4 AD3 AD2 AD1 AD0 1 START BY MASTER SERIAL ...
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U U APPLICATIO S I FOR ATIO Normal Power-Up Using channel example, a normal power-up cycle begins when the switch 1 enable bit (A0) and relay 1 enable bit (A4) are set high and then latched into ...
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LTC4255 U U APPLICATIO S I FOR ATIO Power-Up with No Load When a channel powers-up with no load, the initial sequence is the same as the normal case. When the V voltage is within the power good threshold, the ...
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U U APPLICATIO S I FOR ATIO Power-Up into a Short-Circuit When a channel powers-up with a shorted load, the RELAY1 pin will pull low immediately and the GATE1 pin will start to pull high (point B Figure 11) after ...
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LTC4255 U U APPLICATIO S I FOR ATIO If the autoretry enable bit (B1) is set, then the channel will automatically restart after the retry delay timer expires (Figure 12, point E). If the channel successfully powers up after an ...
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... FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE 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. ...
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... Active Pull-Up Improves Rise Time, Ensures Data Integrity Active Current Limiting, Supplies from –20V to –80V Active Current Limiting, Floating Supplies from –15V Isolates SDA, SCL Lines from Output/Allows 3. Level Translation RELAY1 RELAY2 RELAY3 RELAY4 100k 4255 TA01 Q4 4255f LT/TP 0203 2K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2002 ...