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TPS650242RHB Datasheet(PDF) 6 Page - Texas Instruments |
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TPS650242RHB Datasheet(HTML) 6 Page - Texas Instruments |
6 / 34 page www.ti.com ELECTRICAL CHARACTERISTICS TPS650240 TPS650241 TPS650242 SLVS774 – JUNE 2007 VINDCDC1 = VINDCDC2 = VINDCDC3 = VCC = VINLDO = 3.6V, TA = –40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VDCDC2 STEP-DOWN CONVERTER VVINDCDC2 Input voltage range 2.5 6.0 V IO Maximum output current for TPS650240 Vo = 2.5 V 800 mA and TPS650242 IO Maximum output current for TPS650241 Vo = 2.5 V 1000 mA ISD Shutdown supply current in VINDCDC2 EN_DCDC2 = GND 0.1 1 μA RDS(ON) P-channel MOSFET on-resistance VINDCDC2 = VGS = 3.6 V 140 300 m Ω ILP P-channel leakage current VINDCDC2 = 6.0 V 2 μA RDS(ON) N-channel MOSFET on-resistance VINDCDC2 = VGS = 3.6 V 150 297 m Ω ILN N-channel leakage current VDS = 6.0 V 7 10 μA ILIMF Forward current limit (P- and N-channel) 2.5 V < VINDCDC2 < 6.0 V 1.05 1.16 1.29 A for TPS650240 and TPS650242 ILIMF Forward current limit (P- and N-channel) 2.5 V < VINDCDC2 < 6.0 V 1.22 1.35 1.5 A for TPS650241 fS Oscillator frequency 1.95 2.25 2.55 MHz VDCDC2 Fixed output voltage 1.8 V VINDCDC2 = 2.5 V to 6.0 V; 0 mA ≤ I O ≤ –2% 2% MODE=0 (PWM/PFM) 1.0 A 2.5 V VINDCDC2 = 3.0 V to 6.0 V; 0 mA ≤ I O ≤ –2% 2% 1.0 A Fixed output voltage 1.8 V VINDCDC2 = 2.5 V to 6.0 V; 0 mA ≤ I O ≤ –2% 2% MODE=1 (PWM) 1.0 A 2.5 V VINDCDC2 = 3.0 V to 6.0 V; 0 mA ≤ I O ≤ –1% 1% 1.0 A Adjustable output voltage with resistor VINDCDC2 = VDCDC2 + 0.3V (min 2.5V) –2% 2% divider at DEFDCDC2 MODE=0 (PWM) to 6.0V; 0 mA ≤ I O ≤ 1.0 A Adjustable output voltage with resistor VINDCDC2 = VDCDC2 + 0.3V (min 2.5V) –1% 1% divider at DEFDCDC2; MODE=1 (PWM) to 6.0V; 0 mA ≤ I O ≤ 1.0 A Line Regulation VINDCDC2 = VDCDC2 + 0.3 V (min. 2.5 0.0 %/V V) to 6.0 V; IO = 10 mA Load Regulation IO = 10 mA to 1.0 A 0.25 %/A TSS Soft start ramp time VDCDC2 ramping from 5% to 95% of 750 μs target value R(L2) Internal resistance from L2 to GND 1 M Ω 6 Submit Documentation Feedback |
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