ltc4557eud-trpbf Linear Technology Corporation, ltc4557eud-trpbf Datasheet
ltc4557eud-trpbf
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ltc4557eud-trpbf Summary of contents
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... Battery life is maximized by a low operating current of less than 100 A and a shutdown current of less than 1 A. Board area is minimized by the low profile 3mm 3mm 0.75mm leadless QFN package. , LTC and LT are registered trademarks of Linear Technology Corporation. *U.S. Patent No. 6,356,140 V BATT 0.1 F ...
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... Sink Current = –200 A (Note 2) Source Current = 200 A (Note 2) Loaded with 33pF (10% to 90%) (Note 2) (Note 2) Sink Current = –200 A (Note 2) Source Current = 200 A (Note 2) Loaded with 33pF (10% to 90%) (Note ORDER PART NUMBER LTC4557EUD CLKIN RSTIN 9 UD PART MARKING LAHP = 42 C/W ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER I/OA, I/OB V Low Level Output Voltage OL V High Level Output Voltage OH Rise Time Short-Circuit Current DATA V Low Level Output Voltage OL V High Level Output ...
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LTC4557 W U TYPICAL PERFOR A CE CHARACTERISTICS No Load Supply Current vs V BATT CCA CCB 75 DROPOUT CCX 1.8V ...
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CTIO S DV (Pin 2): Power. Reference voltage for the control CC logic. V (Pin 3): Power. Supply voltage for the analog BATT sections of the LTC4557 (Pins 4, 1): Card Socket. The ...
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LTC4557 W BLOCK DIAGRA V 4 CCA I/OA 7 RSTA 6 CLKA 5 DATA 8 RSTIN 9 CLKIN BATT 2 3 LDOA LDOB CONTROL LOGIC 17 13 GND ENABLE 1 V CCB ...
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U OPERATIO The LTC4557 features two independent smart card chan- nels. Only one of these channels may operate at a time. Each channel is able to output two voltage levels: 1.8V and 3V. The channel selection and voltage selection are ...
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LTC4557 U OPERATIO Activation/Deactivation Activation and deactivation sequencing is handled by built-in circuitry. The activation sequence is initiated by bringing the ENABLE pin HIGH. The activation sequence is outlined below: 1. The RST, CLK and I/O pins are held LOW. ...
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U U APPLICATIO S I FOR ATIO 10kV ESD Protection All smart card pins (CLKA,B, RSTA,B, I/OA,B, V GND) can withstand over 10kV of human body model ESD in-situ. In order to ensure proper ESD protection, careful board layout is ...
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LTC4557 U U APPLICATIO S I FOR ATIO Shutdown Modes The LTC4557 can enter a low current shutdown mode by one of two methods. First, the ENABLE pin can be brought LOW by the controller to directly shut down the ...
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... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 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 ...
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... I = 200 A, I < QFN32 OUT 3V/5V, Frequency = 900kHz OUT Q : 3.1V to 5.5V 1.2V/1.5V OUT Q : 3.1V to 5.5V 0.9V to 1.6V, 1.2V/1.5V, IN OUT < MS10 SD = 1.8V/3V < QFN16 OUT 1.8V/3V/5V 250 A, I < OUT Q SD LT/TP 0204 1K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2004 4557f ...