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UCC2541PWPG4 Datasheet(PDF) 4 Page - Texas Instruments |
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UCC2541PWPG4 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 43 page UCC2541 SLUS621A − AUGUST 2004 − SEPTEMBER 2005 4 www.ti.com ELECTRICAL CHARACTERISTICS VDD = 12 V, 1-µF capacitor from VDD to GND, 1-µF capacitor from BST to SW, 1-µF capacitor from REF to GND, 0.1-µF and 2.2-µF capacitors from VDRV to PGND, CRAMP = 517 pF, RSET = 10 kΩ, TA = TJ = −40°C to 105°C, (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT OVERALL IVDD Operating current DC, after G2 timeout 5 8 10 mA IVDD Operating current CLOAD = 2.2 nF 9 18 30 mA UNDERVOLTAGE LOCKOUT VVDD Start threshold voltage MODE 1 8.0 8.5 9.0 VVDD Stop threshold voltage MODE 1 7.5 8.0 8.5 VVDD Hysteresis MODE 1 0.3 0.5 0.8 VVDRV Start threshold voltage MODE 2 4.30 4.65 4.85 VVDRV Stop threshold voltage MODE 2 4.0 4.3 4.6 V VVDRV Hysteresis MODE 2 0.15 0.35 0.55 V VREF Start threshold voltage MODE 3 VVDD= VVDRV 2.5 2.8 3.2 VREF Stop threshold voltage MODE 3 2.2 2.5 2.8 VREF Hysteresis MODE 3 0.15 0.35 0.55 VOLTAGE REFERENCE (REF) VREF Reference output voltage TA = 25°C 3.28 3.30 3.35 V VREF Reference output voltage Total variation 3.2 3.3 3.4 V ISC Short circuit current VREF = 0 V, TA = 25°C 10 13 20 mA Line regulation 5.25 V ≤ VDRV ≤ 7.2 V 0 1.5 15 mV Load regulation 0 mA ≤ IREF ≤ 5 mA 0 30 70 mV OscillatorPWM (RAMP) fSW Oscillator frequency 270 300 330 kHz DMIN Minimum duty cycle 0% VRAMP Offset voltage 0.10 0.25 0.50 V Oscillator peak voltage 1.7 2.0 2.3 V tDEAD G1 deadtime at maximum duty cycle ratio 150 175 200 ns IRAMP Ramp charge current RRSET = 10 kΩ −325 −300 −275 µA CURRENT ERROR AMPLIFIER VCEA+ Offset voltage Total variation 45 50 55 mV GBW Gain bandwidth(3) 3 4 MHz VOL Low-level output voltage ICOMP = 0 A, VCEA− = 3.3 V, VVEA− = 2.0 V 0.1 V VOL Low-level output voltage ICOMP = 100 µA, VCEA− = 1.5 V VVEA− = 1 V 0 0.60 0.90 V VOH High-level output voltage ICOMP = 0 A, VCEA− = 0 V, VVEA− = 1 V 2.2 2.5 3.0 V AVOL Open loop 60 100 160 dB IBIAS Bias current −200 −80 −10 nA ISINK Sink current VCOMP = 1.0 V, VCEA− = 1.5 V, VVEA− = 1 V 0.30 0.80 1.70 mA CMR Common mode input range(3) 0 2 V (3) Ensured by design. Not production tested. |
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