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TPS62273 Fiches technique(PDF) 3 Page - Texas Instruments |
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TPS62273 Fiches technique(HTML) 3 Page - Texas Instruments |
3 / 24 page ELECTRICAL CHARACTERISTICS TPS62270, TPS62272 TPS62273 www.ti.com ........................................................................................................................................... SLVS799C – NOVEMBER 2007 – REVISED JANUARY 2009 Over full operating ambient temperature range, typical values are at TA = 25°C. Unless otherwise noted, specifications apply for condition VIN = EN = 3.6V. External components CIN = 4.7µF 0603, COUT = 10µF 0603, L = 2µH, see the parameter measurement information. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VIN Input voltage range 2 6 V 2.5 V ≤ VIN ≤ 6 V 400 IOUT Output current mA 2 V ≤ VIN ≤ 2.5 V 150 IOUT = 0 mA, device not switching 15 IQ Operating quiescent current µA IOUT = 0 mA, device switching with no load, 18 VOUT = 1.15V ISD Shutdown current EN = GND 0.1 1 µA Falling 1.85 UVLO Undervoltage lockout threshold V Rising 1.95 ENABLE, VSEL VIH High level input voltage, EN, VSEL 2 V ≤ VIN ≤ 6 V 1 VIN V VIL Low Level Input Voltage, EN, VSEL 2 V ≤ VIN ≤ 6 V 0 0.4 V IIN Input bias Current, EN, VSEL EN, VSEL = GND or VIN 0.01 1.0 µA POWER SWITCH High side MOSFET on-resistance VIN = VGS = 3.6V, TA = 25°C 240 480 m Ω RDS(on) Low side MOSFET on-resistance VIN = VGS = 3.6V, TA = 25°C 180 380 m Ω Forward current limit MOSFET high-side and ILIMF VIN = VGS = 3.6 V 0.56 0.7 0.84 A low side Thermal shutdown Increasing junction temperature 140 TSD °C Thermal shutdown hysteresis Decreasing junction temperature 20 OSCILLATOR fSW Oscillator frequency 2 V ≤ VIN ≤ 6 V 2 2.25 2.5 MHz OUTPUT 1.16 VSEL = 1 1.13 1.15 7 PWM operation, 2 V ≤ VIN ≤ 6 V, TPS62270 FB pin connected to VOUT (1) 0.88 0.91 VSEL = 0 0.9 6 4 VOUT Output voltage PWM V VSEL = 1 3.23 3.3 3.37 PWM operation, 2 V ≤ VIN ≤ 6 V, TPS62272 FB pin connected to VOUT (1) VSEL = 0 2.06 2.1 2.14 VSEL = 1 3.23 3.3 3.37 PWM operation, TPS62273 FB pin connected to VOUT (1) VSEL = 0 2.45 2.5 2.55 VSEL = 1 1.16 TPS62270 VSEL = 0 0.91 VSEL = 1 3.34 Output voltage in PFM mode, voltage VOUT TS62272 V positioning VSEL = 0 2.12 VSEL = 1 3.34 TPS62273 VSEL = 0 2.53 tStart Start-up time Time from active EN to reach 95% of VOUT 500 µs tRamp VOUT ramp up time Time to ramp from 5% to 95% of VOUT 250 µs Ilkg Leakage Current into SW pin VIN = 3.6 V, VIN = VOUT = VSW, EN = GND (2) 0.1 1 µA (1) For VIN = VOUT + 0.6 V (2) In fixed output voltage versions, the internal resistor divider network is disconnected from FB pin. Copyright © 2007–2009, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): TPS62270 TPS62272 TPS62273 |
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