Overview
The L293DNEE4, produced by Texas Instruments, is a quadruple high-current half-H driver. This device is designed to drive inductive loads such as relays, solenoids, DC and bipolar stepping motors, as well as other high-current and high-voltage loads in positive-supply applications. The L293DNEE4 is part of the L293D series, which offers bidirectional drive currents of up to 600 mA at voltages ranging from 4.5 V to 36 V. Each output is a complete totem-pole drive circuit, featuring a Darlington transistor sink and a pseudo-Darlington source. The device is characterized for operation from 0°C to 70°C and includes internal ESD protection and output clamp diodes for inductive transient suppression.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC2) | 4.5 | - | 36 | V |
| Output Current (Continuous) | - | - | 600 mA | mA |
| Peak Output Current (Nonrepetitive, t ≤ 100 µs) | - | - | ±1.2 A | A |
| Input Voltage (VI) | - | - | 7 | V |
| Operating Temperature | 0 | - | 70 | °C |
| Storage Temperature | -65 | - | 150 | °C |
| High-Level Input Current (VI = 7 V) | - | - | 10 µA | µA |
| Low-Level Input Current (VI = 0 V) | - | - | -100 µA | µA |
Key Features
- Wide Supply-Voltage Range: 4.5 V to 36 V.
- High-Current Outputs: Up to 600 mA continuous output current per channel, with peak currents up to ±1.2 A for nonrepetitive pulses.
- TTL-Compatible Inputs: Inputs are TTL compatible and tolerant up to 7 V.
- Internal ESD Protection: Built-in ESD protection for enhanced reliability.
- Output Clamp Diodes: Integrated output clamp diodes for inductive transient suppression in the L293D series.
- Separate Logic Supply: Separate VCC1 terminal for logic inputs to minimize device power dissipation.
- Thermal Shutdown Protection: Thermal shutdown mode to prevent overheating.
Applications
- Stepper Motor Drivers: Suitable for driving bipolar stepping motors.
- DC Motor Drivers: Can be used to drive DC motors in both unidirectional and bidirectional configurations.
- Latching Relay Drivers: Effective for driving latching relays and other high-current loads.
- Solenoid Drivers: Designed to drive solenoids and other inductive loads.
Q & A
- What is the maximum continuous output current of the L293DNEE4?
The maximum continuous output current of the L293DNEE4 is 600 mA per channel.
- What is the voltage range for the supply voltage (VCC2) of the L293DNEE4?
The supply voltage (VCC2) range for the L293DNEE4 is from 4.5 V to 36 V.
- Are the inputs of the L293DNEE4 TTL compatible?
Yes, the inputs of the L293DNEE4 are TTL compatible and tolerant up to 7 V.
- What type of protection does the L293DNEE4 have against inductive transients?
The L293DNEE4 has integrated output clamp diodes for inductive transient suppression.
- What is the operating temperature range for the L293DNEE4?
The operating temperature range for the L293DNEE4 is from 0°C to 70°C.
- Can the L293DNEE4 be used to drive DC motors in both directions?
Yes, the L293DNEE4 can be used to drive DC motors in both unidirectional and bidirectional configurations.
- What is the purpose of the separate VCC1 terminal in the L293DNEE4?
The separate VCC1 terminal is for the logic inputs to minimize device power dissipation.
- Does the L293DNEE4 have thermal shutdown protection?
Yes, the L293DNEE4 has thermal shutdown protection to prevent overheating.
- What types of loads can the L293DNEE4 drive?
The L293DNEE4 can drive inductive loads such as relays, solenoids, DC and bipolar stepping motors, and other high-current/high-voltage loads.
- How are the drivers enabled in the L293DNEE4?
The drivers in the L293DNEE4 are enabled in pairs, with drivers 1 and 2 enabled by 1,2EN and drivers 3 and 4 enabled by 3,4EN.
