Operating Supply Voltage
:
Operating Supply Current
:
Mounting Style
: SMD/SMT
Maximum Operating Temperature
: + 105 C
Rise Time
: 60 ns
Number of Outputs
: 2
Package / Case
: SOIC-16
Fall Time
: 60 ns
Switching Frequency
: 1000 KHz
Duty Cycle (Max)
: 45 %
DescriptionThe UC28025DWR is one member of the UC28025 family which is designed as the fixed-frequency PWM controller that can be used in (1)off-line and DC/DC power supplies; (2)converters using voltage mode, peak current mode, or average current mode control methods; (3)single-ended or two-switch topology designs applications. also this device is available in the industrial temperature range of -40°C to 105°C.
Features of the UC28025DWR are:(1)peak current mode, average current mode, or voltage mode (with feed-forward) control methods; (2)practical operation up to 1 MHz; (3)50-ns propagation delay to output; (4)±1.5-A peak totem pole outputs; (5)9-V to 30-V nominal operational voltage range; (6)wide bandwidth error amplifier; (7)fully latched logic with double pulse suppression; (8)pulse-by-pulse current limiting; (9)programmable maximum duty cycle control; (10)under-voltage lockout with hysteresis; (11)trimmed 5.1-V reference with UVLO; (12)same functionality as UC3823 and UC3825.
The absolute maximum ratings of the UC28025DWR can be summarized as:(1)Supply Voltage: 30 V;(2)Output Current, Source or Sink DC: +/-0.5 A;(3)Peak output current, pulsed 0.5 ms IOUT(pulsed): +/-2.0 A;(4)Capacitive load, CLOAD: 200 pF;(5)Output current, IREF: 10 mA;(6)Soft Start Sink Current: 5 mA;(7)Oscillator Charging Current: -5 mA;(8)Power Dissipation: 1 W;(9)Storage Temperature Range: -65°C to +150°C;(10)Lead Temperature (Soldering, 10 seconds): 300°C. If you want to know more information about it, please download the datasheet in www.seekic.com or www.chinaicmart.com .
Parameters: | Technical/Catalog Information | UC28025DWR |
| Vendor | Texas Instruments |
| Category | Integrated Circuits (ICs) |
| PWM Type | Voltage/Current Mode |
| Number of Outputs | 2 |
| Package / Case | * |
| Packaging | * |
| Duty Cycle | 45% |
| Voltage - Supply | 9 V ~ 30 V |
| Frequency-Max | 1MHz |
| Buck | No |
| Boost | Yes |
| Flyback | Yes |
| Inverting | No |
| Doubler | No |
| Divider | No |
| Cuk | No |
| Isolated | No |
| Drawing Number | * |
| Operating Temperature | -40°C ~ 105°C |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | UC28025DWR
UC28025DWR
|
UC28025DWR Data Sheet
