0.28 I RIS,o{:j 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00
Shutdown and Load Disconnect In addition to the nominal charge pump and regulator func- tions, the LM2686 features shutdown and load disconnect circuitry. CE (chip enable) and SD (shutdown positive) per- form the same task with opposite input polarities. When CE is low or SD is high, all circuit blocks are disabled and Vos falls to ground potential. This is the same result as when the die temperature exceeds 150'C, and the device's internal thermal shutdown is triggered. The LM2686 incorporates a low impedance switch tied to the v05 0utput, because some special applications require load disconnect and this is achievable via the switch. Switch PSW connects V05 to VPSW. In normal operation, this switch is closed, allowing 5V loads to be tied to either Vos or VPSW. Forcing CE low or SD high opens the PSW.
| Parameter | Maximum Rating | Unit |
| Power Dissipation | 100 | mW |
| Collector-Emitter Voltage | 30 | V |
| Emitter-Collector Voltage | 5 | V |
| Operating Temperature Range | -550C to +lOOoC |
| Storage Temperature Range | -550C to +lOOoC |
| Lead Soldering Temperature | 2600C for 5 seconds |
| | |
