LTC2922IF-3.3 Linear Technology, LTC2922IF-3.3 Datasheet
LTC2922IF-3.3
Specifications of LTC2922IF-3.3
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LTC2922IF-3.3 Summary of contents
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... The LTC2921 includes three remote sense switches in a 16-pin narrow SSOP package, while the LTC2922 includes five remote sense switches in a 20-pin TSSOP package. Both parts are available for V 3.3V, and 2.5V. , LTC and LT are registered trademarks of Linear Technology Corporation. 5V WSL1206 LOAD Si2316DS ...
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... LTC2921/LTC2922 LTC2921-3.3/LTC2922-3.3 LTC2921-2.5/LTC2922-2.5 LTC2921/LTC2922 LTC2921-3.3/LTC2922-3.3 LTC2921-2.5/LTC2922-2.5 LTC2921/LTC2922 LTC2921-3.3/LTC2922-3.3 LTC2921-2.5/LTC2922-2.5 ORDER PART TOP VIEW NUMBER LTC2922CF 18 SENSE LTC2922CF-3.3 17 GATE LTC2922CF-2 LTC2922IF 15 GND LTC2922IF-3 LTC2922IF-2 PACKAGE = 90 C 3.3V for CC MIN TYP MAX 4.50 5.00 5.50 2.97 3.30 3.63 2.37 2.50 2.63 2 4.285 4.350 4 ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T LTC2921-3.3/LTC2922-3.3, and V = 2.5V for LTC2921-2.5/LTC2922-2.5, unless otherwise noted. CC SYMBOL PARAMETER V Supply Undervoltage Lockout CC(UVLO) V Supply Undervoltage Hysteresis CC(UVH) Electronic Circuit Breaker V Circuit Breaker Trip Voltage ...
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LTC2921/LTC2922 Series W U TYPICAL PERFOR A CE CHARACTERISTICS Specifications are unless otherwise noted. A Supply Current vs Supply Voltage 3.00 PG SIGNAL ASSERTED 2.75 2.50 LTC2921 LTC2922 LTC2921-3.3 2.25 LTC2922-3.3 2.00 LTC2921-2.5 LTC2922-2.5 1.75 ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Specifications are unless otherwise noted. A Gate Voltage vs Supply Voltage 12 GATE LOAD = 1000pF || 10M PG LOAD = BYPASS CAP ...
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LTC2921/LTC2922 Series CTIO S (LTC2921/LTC2922 or [LTC2922 Only]) S0, D0 (Pins 1, 20 [LTC2922]): Remote Switch 0. These pins are the terminals of an internal N-channel FET switch that is enabled after the GATE pin ...
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U U FUNCTIONAL DIAGRA OVERCURRENT SENSE 50mV + – – – – – – 0.7V 0.5V V 11.1V PUMP APPROXIMATELY 1V – V SWON ...
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LTC2921/LTC2922 Series U OPERATIO General Operation The LTC2921 and LTC2922 track multiple supplies, moni- tor multiple inputs, and provide integrated switches for remote sensing. Once all input voltages lie between moni- toring and overvoltage threshold levels, in-line FETs are turned ...
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U OPERATIO Electronic Circuit Breaker Placing a resistor between the V and SENSE pins allows CC the part to detect shorts and excessive currents on the V supply. The electronic circuit breaker trips when the voltage across the resistor is ...
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LTC2921/LTC2922 Series DIAGRA S The timing of a circuit breaker trip and reset, and a subsequent regular turn-on are shown in Figure 4. Prior to time 1, a successful turn-on sequence had completed. At ...
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U U APPLICATIO S I FOR ATIO Setting the Supply Monitor Levels The LTC2921 and LTC2922 series both feature low 0.5V monitoring thresholds with tight 1% accuracy. To set a supply monitoring level tightly, design a precision ratio resistive divider ...
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LTC2921/LTC2922 Series U U APPLICATIO S I FOR ATIO voltage specifications. On-resistance is a critical param- eter when choosing power MOSFETs. The integrated remote sense switches compensate for IR drops, but minimizing V leaves more margin for designing the Q(MAX) ...
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U U APPLICATIO S I FOR ATIO Electronic Circuit Breaker The LTC2921/LTC2922’s electronic circuit breaker pro- tects against excessive current on V trips when the SENSE pin falls more than 50mV below the V pin for more than 1 s. ...
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LTC2921/LTC2922 Series U U APPLICATIO S I FOR ATIO R SENSE Q0 V SRC0 V SENSE CC GATE V PUMP ENABLE GND LTC2922 2921/22 F08 Figure 8. PG Pin as Logic Output V SRC5 R SENSE ...
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U U APPLICATIO S I FOR ATIO Before Q1 closes to connect the load, the actual supply voltage relative given by Equation 12 – • SRC 1 SRC ...
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LTC2921/LTC2922 Series U U APPLICATIO S I FOR ATIO 5V = 7.5% V OUT V FB DC/DC CONVERTER 3.3V = 7.5% V OUT 100 DC/DC CONVERTER 2.5V = 7.5% V OUT 100 DC/DC ...
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U U APPLICATIO S I FOR ATIO Next, consider the supply ramping N-channel MOSFETs Q0, Q1 and Q2. Transistor Q0 will have >4.5V of gate- source voltage, even at maximum supply voltage (5.375V) and minimum GATE pin voltage (10V). Considering ...
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LTC2921/LTC2922 Series U U APPLICATIO S I FOR ATIO 10 V – • 150 m • 100 – – • 150 ...
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... FLASH SHALL NOT EXCEED 0.010" (0.254mm) 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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... LATE Si2316DS 0 25V 10 2.5V LATE Si2316DS 0 25V 10 18 SENSE 17 GATE C GATE 0.47 F 25V PG PIN AS 16 SEQUENCED GATE DRIVER 0.22 F 25V 2921/22 TA03 500ms GATE t ~ 600ms TIMER TIMER 0.22 F 10V LT/TP 0404 1K REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2003 29212fa ...