SNVS118F december 1999 – may 2023 LM2594 , LM2594HV
PRODUCTION DATA
- 1
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Description (continued)
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information
- 7.5 Electrical Characteristics – 3.3 V
- 7.6 Electrical Characteristics – 5 V
- 7.7 Electrical Characteristics – 12 V
- 7.8 Electrical Characteristics – Adjustable
- 7.9 Electrical Characteristics – All Output Voltage Versions
- 7.10 Typical Characteristics
- 8 Detailed Description
- 9 Application and Implementation
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
6 Pin Configuration and Functions
*No internal connection, but must be soldered to PCB for best heat transfer.
?Patent Number 5,382,918.
Figure 6-1 D or P Package8-Pin SOIC or PDIPTop ViewTable 6-1 Pin Functions
| PIN | I/O(1) | DESCRIPTION | |
|---|---|---|---|
| NO. | NAME | ||
| 1, 2, 3 | NC | — | No connection |
| 4 | Feedback | I | Senses the regulated output voltage to complete the feedback loop. |
| 5 | ON/OFF | I | Allows the switching regulator circuit to be shut down using logic level signals, thus dropping the total input supply current to approximately 80 μA. Pulling this pin below a threshold voltage of approximately 1.3 V turns the regulator on, and pulling this pin above 1.3 V (up to a maximum of 25 V) shuts the regulator down. If this shutdown feature is not needed, the ON/OFF pin can be wired to the ground pin or it can be left open, in either case, the regulator is in the ON condition. |
| 6 | Ground | — | Circuit ground |
| 7 | +VIN | I | This is the positive input supply for the IC switching regulator. A suitable input bypass capacitor must be present at this pin to minimize voltage transients and to supply the switching currents needed by the regulator. |
| 8 | Output | O | Internal switch. The voltage at this pin switches between (+VIN ? VSAT) and approximately ?0.5 V, with a duty cycle of VOUT/VIN. To minimize coupling to sensitive circuitry, the PCB copper area connected to this pin must be kept to a minimum. |
(1) I = INPUT, O = OUTPUT