Large-Scale Integrated Darlington Driver ICOverview of ULN2003H:
The ULN2003H is a monolithic integrated circuit array of high voltage, high current Darlington transistors. It consists of 7 groups of NPN Darlington transistors, featuring high voltage output characteristics and cathode clamp diodes for converting inductive loads. The collector current of a single Darlington pair is 250mA. Darlington transistors can be paralleled to handle higher currents. This circuit is primarily used in relay drivers, solenoid drivers, lamp drivers, display drivers (LED gas discharge), line drivers, and logic drivers.
Each Darlington pair of the ULN2003H has a 2.7kΩ series resistor, which can be directly connected to TTL or 5V CMOS devices.
Large-Scale Integrated Darlington Drive ICFeatures of ULN2003H:
500mA rated collector current (per output)
Highest Voltage Rating: 50V
Compatible with various input and logical types
Large-Scale Integrated Darlington Driver ICApplication of ULN2003H:
Relay Driver
Letter Opener Driver
Light Driver
Logic Drive
Large-Scale Integrated Darlington Drive ICThe limit values of ULN2003H:
Unless otherwise specified, TA=25℃
| Parameters | Symbol | Numeric | Unit |
| Voltage between the collector and emitter | VCE | 50 | V |
| Input Voltage | VI | 30 | |
| Cathode Current Peak | IC | 500 | mA |
| Total Emitter Current | IOK | 1500 | |
| Operating Temperature | Topr | -20~+85 | ℃ |
| Storage Temperature | Tstg | -65~+150 |
Large-Scale Integrated Darlington Driver ICElectrical characteristics of ULN2003H:
Unless otherwise specified, TA=25℃
| Parameters | Terms | Minimum Value | Typical Value | Maximum Value | Unit |
| VI(ON) Input Voltage | VCE=2V,IC=200mA | 2.4 | V | ||
| VCE=2V,IC=250mA | 2.7 | ||||
| VCE=2V,IC=300mA | 3 | ||||
| VCE(SAT) Collector-Emitter Saturation Voltage | II=250uA,IC=100mA | 0.9 | 1.1 | V | |
| II=350uA,IC=200mA | 1 | 1.3 | |||
| II=500uA,IC=350mA | 1.2 | 1.6 | |||
| ICEX Collector Current Cut-off | VCE=50V,II=0 | 50 | uA | ||
| VCE=50V,II=0,Tamb=70℃ | 100 | ||||
| VF Advance Clamping Voltage | IF=350mA | 1.7 | 2 | V | |
| II(OFF) Output Current in Off State | VCE=50V,IC=500mA,Tamb=70℃ | 50 | 65 | uA | |
| IIInput Current | VI=3.85V | 0.95 | 1.35 | mA | |
| IR Reverse Clamp Current | VR=50V | 50 | uA | ||
| VR=50V,Tamb=70℃ | 100 | ||||
| CI Input Capacitor | VI=0，f=1MHz | 15 | 25 | pF | |
| tPLHPropagation delay time, low to high level output | 0.25 | 1 | us | ||
| tPHLPropagation delay time, high to low level output | 0.25 | 1 | us |
