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TPS62403DRCT Datasheet(PDF) 4 Page - Texas Instruments |
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TPS62403DRCT Datasheet(HTML) 4 Page - Texas Instruments |
4 / 39 page www.ti.com TPS62400 ,, TPS62401 TPS62403 SLVS681C – JUNE 2006 – REVISED DECEMBER 2006 ELECTRICAL CHARACTERISTICS (continued) V IN = 3.6V, VOUT = 1.8V, EN = VIN, MODE = GND, L = 2.2µH, COUT = 20µF, TA = –40°C to 85°C typical values are at TA = 25 °C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ttimeout Timeout for entering power save mode MODE/DATA Pin changes from high to low 520 µs POWER SWITCH RDS(ON) P-Channel MOSFET on-resistance, VIN = VGS = 3.6V 280 620 m Ω Converter 1,2 ILK_PMOS P-Channel leakage current VDS = 6.0V 1 µA RDS(ON) N-Channel MOSFET on-resistance VIN = VGS = 3.6V 200 450 m Ω Converter 1,2 ILK_SW1/SW2 Leakage current into SW1/SW2 pin Includes N-Chanel leakage current, 6 7.5 µA VIN = open, VSW = 6.0V, EN = GND(4) ILIMF Forward Current Limit OUTPUT 1 0.68 0.8 0.92 2.5V ≤ V IN≤ 6.0V A PMOS and NMOS OUTPUT 2 0.85 1.0 1.15 TSD Thermal shutdown Increasing junction temperature 150 °C Thermal shutdown hysteresis Decreasing junction temperature 20 °C OSCILLATOR fSW Oscillator frequency 2.5V ≤ VIN ≤ 6.0V 2.0 2.25 2.5 MHz OUTPUT VOUT Adjustable output voltage range 0.6 VIN V Vref Reference voltage 600 mV Voltage positioning active, MODE/DATA = GND, 1.01 VOUT (PFM) –1.5% 2.5% device operating in PFM mode, VOUT VIN = 2.5V to 5.0V (6)(7) MODE/DATA = GND; DC output voltage accuracy adjustable device operating in PWM Mode, –1% 0% 1% and fixed output voltage(5) VIN = 2.5V to 6.0V(7) VIN = 2.5V to 6.0V, Mode/Data = VIN , VOUT(PWM) Fixed PWM operation, –1% 0% 1% 0mA < IOUT1 < 400mA ; 0mA < IOUT2 < 600mA(8) DC output voltage load regulation PWM operation mode 0.5 %/A tStart up Start-up time Activation time to start switching(9) 170 µs tRamp VOUT Ramp UP time Time to ramp from 5% to 95% of VOUT 750 µs (4) On pins SW1 and SW2 an internal resistor of 1M Ω is connected to GND. (5) Output voltage specification does not include tolerance of external voltage programming resistors (6) Configuration L typ 2.2 µH, C OUT typ 20µF, see parameter measurement information, the output voltage ripple in PFM mode depends on the effective capacitance of the output capacitor, larger output capacitors lead to tighter output voltage tolerance. (7) In Power Save Mode, PWM operation is typically entered at IPSM = VIN/32Ω. (8) For VOUT > 2.0V, VIN min = VOUT +0.5V (9) This time is valid if one converter turns from shutdown mode (EN2 = 0) to active mode (EN2 =1) AND the other converter is already enabled (e.g., EN1 = 1). In case both converters are turned from shutdown mode (EN1 and EN2 = low) to active mode (EN1 and/or EN2=1) a value of typ 80 µs for ramp up of internal circuits needs to be added. After t Start the converter starts switching and ramps VOUT. 4 Submit Documentation Feedback |
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