LTC2900-1IMS#TRPBF Linear Technology, LTC2900-1IMS#TRPBF Datasheet
LTC2900-1IMS#TRPBF
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LTC2900-1IMS#TRPBF Summary of contents
Page 1
... V an open-drain RST output, while the LTC2900-2 has a push-pull RST output. The 43 A supply current makes the LTC2900 ideal for power conscious systems and it may be configured to monitor less than four inputs. The parts are available in the 10-lead MSOP and the 10-lead 3mm packages ...
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... LTC2900 ABSOLUTE AXI U RATI GS V1, V2, V3, V4 PBR ............................. – 0. RST (LTC2900-1)........................................ – 0. RST (LTC2900-2).......................... – 0.3V to (V2 + 0.3V) CRT ............................................. – 0. ............................................. – 0. REF Reference Load Current (I ) ............................ 1mA VREF U PACKAGE/ORDER I FOR ATIO TOP VIEW CRT REF RST PBR 5 6 GND MS PACKAGE 10-LEAD PLASTIC MSOP ...
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... PBR the quiescent current, programming (transient) current and reference load current. Note 5: The RST output pin on the LTC2900-1 has an internal pull- typically 6 A. However, an external pull-up resistor may be used when faster rise times are required or for Note 6: The push-pull RST output pin on the LTC2900-2 is actively pulled ...
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... LTC2900 DIAGRA V RTX V X RST PBR W U TYPICAL PERFOR A CE CHARACTERISTICS 5V Threshold Voltage vs Temperature 4.750 4.725 4.700 4.675 4.650 4.625 4.600 – –40 – TEMPERATURE ( C) 2900 G01 2.5V Threshold Voltage vs Temperature 2.3750 2.3675 2.3600 2.3525 2.3450 2.3375 2.3300 2.3225 2.3150 2.3075 2.3000 – ...
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... Typical Transient Duration vs Comparator Overdrive (V1, V2) 450 T A 400 350 RESET OCCURS ABOVE CURVE 300 250 200 150 100 RESET COMPARATOR OVERDRIVE VOLTAGE (% OF V LTC2900 V vs Temperature REF 1.228 1.222 1.216 1.210 1.204 1.198 1.192 80 100 – 60 –40 – TEMPERATURE ( C) ...
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... C (FARAD) RT 2900 G15 RST High Level Output Voltage vs Output Source Current (LTC2900-2) 3.5 3.0 – 2.5 2.0 1 0 (mA) SOURCE 2900 G18 RST Pull-Up Current vs V2 (LTC2900- RT33 2 V RT30 V RT25 2.5 3 3 (V) 2900 G23 100n 1 2900 G16 ...
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... ADJ. See Table 1 for details. V2 (Pin 10): Voltage Input 2. Select from 3.3V 2.5V. See Table 1 for details. The greater of (V1, V2) is also V for the device. Bypass this pin to ground with a 0.1 F (or greater) capacitor. RST is weakly pulled (LTC2900-1). RST is actively pulled the LTC2900-2. LTC2900 REF CC ...
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... LTC2900 W BLOCK DIAGRA RESISTIVE DIVIDER V3 MATRIX GND A/D V REF 1.210V 8 8 – + – + – + – + BUFFER 22 A BANDGAP REFERENCE 10 A PBR 5 V1 POWER V CC DETECT V2 LTC2900 RST 4 ADJUSTABLE RESET PULSE GENERATOR LTC2900-2 V2 RST CRT C RT 2900 DB-1 2900f ...
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... Single pin pro- gramming selects input voltage monitor combina- tions. All four voltage inputs must be above predetermined thresholds for the reset not to be invoked. The LTC2900 will assert the reset output during power-up, power-down and brownout conditions on any one of the voltage inputs. ...
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... REF 1.8 1.5 1 min al Table 3. Suggested 1% Resistor Values for the –ADJ Input V SUPPLY ( 1mA). REF –2 –5 –5.2 –10 –12 8 LTC2900 V REF – TRIP 2900 F06 ( TRIP 11.25 2150 9.4 1780 7.5 1400 7 1300 5 ...
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... Using a 10k pull- up resistor, the rise time is reduced to 3.3 s for a 150pF inputs drop below X load capacitance. The LTC2900-2 has an active pull- the RST output. The typical performance curve (RST Pull-Up Cur- < 2V typ), the CC rent vs V2 curve) demonstrates that the pull-up current is somewhat linear versus the V2 voltage and R mated to be approximately 625 ...
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... Down to 0V (LTC2900-2) CC Some applications require the reset output (RST valid with V down to 0V. The LTC2900-2 is designed to CC handle this requirement with the addition of an external resistor from RST to ground. The resistor will provide a path for stray charge and/or leakage currents, preventing ...
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... OPEN) *OPTIONAL RESISTOR RECOMMENDED TO EXTEND ESD TOLERANCE 2. 3. LTC2900 8 3 CRT V REF 4 7 SYSTEM RST V PG RESET PBR GND 100k LTC2900 R3 487k 1% –5. –4.87V TRIP 121k 1% R1 93. 9.53k 1% 2900 TA05 R3 68. 0.84V TRIP R1 86. 100k 1% R2 16.2k 1% 2900 TA04 ...
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... LTC2900 PACKAGE DESCRIPTIO 3.50 0.05 1.65 0.05 2.15 0.05 (2 SIDES) 0.25 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 TOP MARK (SEE NOTE 5) 0.200 REF NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2). CHECK THE LTC WEBSITE DATA SHEET FOR CURRENT STATUS OF VARIATION ASSIGNMENT 2 ...
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... DETAIL “A” (1.93 .006) 0 – 6 TYP 0.53 0.01 (.021 .006) 1.10 (.043) DETAIL “A” MAX SEATING PLANE 0.17 – 0.27 (.007 – .011) TYP LTC2900 0.497 0.076 (.0196 .003 REF 3.00 0.102 (.118 .004) NOTE 0.86 (.034) REF ...
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... PBR GND C C RTA RTB R2A 20k 59k 1% www.linear.com MASTER RESET R3B 464k 1% R4B 121k LTC2900 CRT V REF R1B 4 7 RST V 22. PBR GND R2B 100k 78.7k 1% 2900 TA06 COMMENTS 4.65V Threshold 2.9V Threshold 4.65V Threshold 4.37V/4.62V Threshold 4.725V, 3.118V, 1V Thresholds ( 0.75%) 2 ...