Product Overview
The ULN2803Ax-MS is a high-voltage, high-current Darlington transistor array featuring eight open-collector common-emitter pairs, each capable of 500mA. It includes suppression diodes for inductive load driving and offers convenient input/output pin arrangement for simplified board layout. This versatile device is suitable for driving a wide range of loads such as solenoids, relays, DC motors, LED displays, filament lamps, thermal print-heads, and high-power buffers. Available in SOP18 and SSOP24/QSOP24 packages.
Product Attributes
- Brand: Msksemi
- Certifications: UL (implied by ULN designation, though not explicitly stated as a certification in text)
Technical Specifications
| Model | Package | Collector Current (single output) | High-Voltage Outputs | Output Clamp Diodes | Inputs Compatible | Relay-Driver Applications | Order Information | Packing Type |
| ULN2803Ax-MS | SOP18 | 500 mA | 50V | Yes | Various Types of Logic | Yes | ULN2803AG-MS | 1500 |
| ULN2803Ax-MS | SSOP24/QSOP24 | 500 mA | 50V | Yes | Various Types of Logic | Yes | ULN2803AT-MS | 4000 |
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
| Collector to emitter voltage | VC C | | | 50 | V | |
| Clamp diode reverse voltage | VR | | | 50 | V | (2) |
| Input voltage | VI | | | 30 | V | (2) |
| Peak collector current | ICP | | See typical characteristics | | mA | |
| Output clamp current | IOK | | | 500 | mA | |
| Total emitter-terminal current | ITE | 2.5 | | | A | |
| Operating free-air temperature range | TA | 30 | | +105 | C | ULN2803 |
| Operating virtual junction temperature | TJ | | | 150 | C | |
| Storage temperature range | TSTG | 40 | | 150 | C | |
| On-state input voltage | VI(on) | | | 2.4 | V | VCE = 2 V, IC = 200 mA |
| On-state input voltage | VI(on) | | | 2.7 | V | VCE = 2 V, IC = 250 mA |
| On-state input voltage | VI(on) | | | 3 | V | VCE = 2 V, IC = 300 mA |
| Collector-emitter saturation voltage | VCE(sat) | | 0.9 | 1.1 | V | II = 250 A, IC = 100 mA |
| Collector-emitter saturation voltage | VCE(sat) | | 1 | 1.3 | V | II = 350 A, IC = 200 mA |
| Collector-emitter saturation voltage | VCE(sat) | | 1.2 | 1.6 | V | II = 500 A, IC = 350 mA |
| Collector cutoff current | ICEX | | | 50 | A | VCE = 50 V, II = 0 |
| Collector cutoff current | ICEX | | | 100 | A | VCE = 50 V, TA = +105C, II = 0 |
| Clamp forward voltage | VF | | 1.7 | 2 | V | IF = 350 mA |
| Off-state input current | II(off) | 50 | 65 | | A | VCE = 50 V, IC = 500 A |
| Input current | II | | 0.93 | 1.35 | mA | VI = 3.85 V |
| Clamp reverse current | IR | | | 50 | A | VR = 50 V |
| Input capacitance | Ci | | 15 | 25 | pF | VI = 0, f = 1 MHz |
| Propagation delay time, low- to high-level output | tPLH | 0.25 | | 1 | s | See Figure 9 |
| Propagation delay time, high- to low-level output | tPHL | 0.25 | | 1 | s | See Figure 9 |
| High-level output voltage after switching | VOH | VS20 | mV | | | VS = 50 V, IO = 300 mA, See Figure 9 |
2506121200_MSKSEMI-ULN2803AG-MS_C47020995.pdf