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LTC2921 数据表(PDF) 7 Page - Linear Technology |
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LTC2921 数据表(HTML) 7 Page - Linear Technology |
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7 / 20 page ![]() LTC2921/LTC2922 Series 7 29212fa Figure 1. LTC2921 and LTC2922 Functional Diagram 2921/22 F01 LATCH OVERVOLTAGE MONITOR OVERVOLTAGE MONITOR OVERVOLTAGE MONITOR OVERVOLTAGE MONITOR OVERVOLTAGE MONITOR CONTROL LOGIC VPUMP VPUMP VPUMP GATE ON TIMER DONE PULSE TIMER DONE CIRCUIT BREAKER RESET PULSE TIMER ENABLE TIMER ENABLE GATE ENABLE REMOTE SENSE SWITCH ENABLE PG ENABLE 4 µA 2 µA 10 µA VCC VCC PG GATE TIMER + – 50mV 0.5V 0.7V SENSE VCC V1 V2 V3 V4 (LTC2922 ONLY) D4 S4 (LTC2922 ONLY) D3 D2 D1 (LTC2922 ONLY) D0 S0 (LTC2922 ONLY) S1 S2 S3 1.2V OVERCURRENT UNDERVOLTAGE SWITCHES ON VSWON VSWON VSWON REMOTE SENSE SWITCH GATE REFERENCE GENERATOR AND CHARGE PUMP + – VPUMP ≈ 11.1V AT VCC =5V 1.2V 0.7V 0.5V GND APPROXIMATELY 1V FUNCTIONAL DIAGRA |
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