Product Summary

The UCC2808APW-2 is a BiCMOS push-pull, high-speed, low-power, pulse-width modulator. The UCC2808APW-2 contains all of the control and drive circuitry required for off-line or dc-to-dc fixed frequency current-mode switching power supplies with minimal external parts count. The UCC2808APW-2 dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%.

Parametrics

UCC2808APW-2 absolute maximum ratings: (1)Supply voltage (IDD ≤ 10 mA): 15 V; (2)Supply current: 20 mA; (3)OUTA/OUTB source current (peak): -0.5 A; (4)OUTA/OUTB sink current (peak): 1.0 A; (5)Analog inputs (FB, CS): -0.3 V to VDD 0.3 V, not to exceed 6 V; (6)Power dissipation at TA = 25℃ (N package): 1 W; (7)Power dissipation at TA = 25℃ (D package): 650 mW; (8)Power dissipation at TA = 25℃ (PW package): 400 mW; (9)Storage temperature, Tstg: -65℃ to 150℃; (10)Junction temperature, TJ: -55℃ to 150℃; (11)Lead temperature (soldering, 10 sec.): 300℃.

Features

UCC2808APW-2 features: (1)Dual Output Drive Stages in Push-Pull Configuration; (2)Current Sense Discharge Transistor to Improve Dynamic Response; (3)130-μA Typical Starting Current; (4)1-mA Typical Run Current; (5)Operation to 1 MHz; (6)Internal Soft Start; (7)On-Chip Error Amplifier With 2-MHz Gain Bandwidth Product; (8)On Chip VDD Clamping; (9)Output Drive Stages Capable of 500-mA Peak-Source Current, 1-A Peak-Sink Current.

Diagrams

UCC2808APW-2 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
UCC2808APW-2
UCC2808APW-2
Texas Instruments
Current Mode PWM Controllers Low-Pwr Current-Mode Push-Pull PWM
Data Sheet
0-1: $2.36
1-25: $2.16
25-100: $1.73
100-250: $1.50
UCC2808APW-2G4
UCC2808APW-2G4
Texas Instruments
Current Mode PWM Controllers Low-Pwr Current-Mode Push-Pull PWM
Data Sheet
0-1: $2.40
1-25: $1.97
25-100: $1.78
100-250: $1.63