ltc1928 Linear Technology Corporation, ltc1928 Datasheet
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ltc1928
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ltc1928 Summary of contents
Page 1
... The regulator is capable of supplying up to 30mA of output current. Shutdown reduces the supply current to < removes the load from V discharges V The LTC1928-5 LDO regulator is stable with only the output. Small ceramic capacitors can be used, reduc- ing PC board area. The LTC1928-5 is short-circuit and overtemperature pro- tected ...
Page 2
... Burst Mode is a trademark of Linear Technology Corporation. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LTC1928ES6-5 is guaranteed to meet performance specifications from Specifications over the – operating temperature range are assured by design, characterization and correlation with statistical process controls ...
Page 3
... G02 Enable to Shutdown Timing (Figure LOAD OUT C = 4.7 F OUT 0 1ms/DIV 19285 G05 LTC1928-5 . There may until the shutdown state IN SOURCE V Transient Response OUT – OUT C = 4.7 F –10 ...
Page 4
... LTC1928 TYPICAL PERFOR A CE CHARACTERISTICS Operating Current (No Load) 260 240 220 200 180 160 140 120 100 2.5 3.0 3.5 4.0 4.5 V (V) IN 19285 G07 W BLOCK DIAGRA 4.7 F POR/ SHDN CONTROL 4 Efficiency vs Supply Voltage 100 15mA OUT ...
Page 5
... The V voltage is internally set to 5V APPLICATIONS INFORMATION Operation The LTC1928-5 uses a switched-capacitor charge pump to generate a CPO voltage of approximately 2V powers an internal low dropout linear regulator that sup- plies a regulated output Internal comparators are OUT used to sense CPO and V ...
Page 6
... LTC1928 APPLICATIONS INFORMATION DROPOUT CPO CPO + V DROPOUT + 2V C – IN CPO Figure 2. Equivalent Circuit External CPO Loading The CPO output can drive an external load (for example, an LDO). The current required by this additional load will reduce the available current from V OUT requires 1mA, the available current 1mA ...
Page 7
... C 4.7 F Figure 4. LTC1928-5, External Load on CPO, No Shutdown State 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. ...
Page 8
... LTC1754-5 Micropower 5V Charge Pump in ThinSOT LT1761 Series 100mA ThinSOT, Low Noise LDO Regulators LTC3200 Constant Frequency Doubler Charge Pump Linear Technology Corporation 8 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com W U LTC1928 RIPPLE OUT ...