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TPS62290 Fiches technique(PDF) 3 Page - Texas Instruments |
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TPS62290 Fiches technique(HTML) 3 Page - Texas Instruments |
3 / 24 page www.ti.com ELECTRICAL CHARACTERISTICS TPS62290, TPS62291, TPS62293 SLVS764C – JUNE 2007 – REVISED MARCH 2008 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 = 2.2µH, refer to parameter measurement information. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VI Input voltage range 2.3 6 V VIN 2.7 V to 6 V 1000 IO Output current VIN 2.5 V to 2.7 V 600 mA VIN 2.3 V to 2.5 V 300 IO = 0 mA, PFM mode enabled (MODE = GND) device not switching, 15 µA See (1) IQ Operating quiescent current IO = 0 mA, switching with no load (MODE = VIN) PWM operation, 3.8 mA VO = 1.8 V, VIN = 3V ISD Shutdown current EN = GND 0.1 1 µA Falling 1.85 UVLO Undervoltage lockout threshold V Rising 1.95 ENABLE, MODE High level input voltage, EN, 2.3 V ≤ VIN ≤ 6 V 1 VIN VIH V MODE Low level input voltage, EN, 2.3 V ≤ VIN ≤ 6 V 0 0.4 VIL V MODE II Input bias current, EN, MODE EN, MODE = GND or VIN 0.01 1 µA POWER SWITCH High side MOSFET on-resistance 240 480 RDS(on) VIN = VGS = 3.6 V, TA = 25°C m Ω Low side MOSFET on-resistance 185 380 Forward current limit MOSFET ILIMF VIN = VGS = 3.6 V 1.19 1.4 1.68 A high-side and low side Thermal shutdown Increasing junction temperature 140 TSD °C Thermal shutdown hysteresis Decreasing junction temperature 20 OSCILLATOR fSW Oscillator frequency 2.3 V ≤ VIN ≤ 6 V 2.0 2.25 2.5 MHz OUTPUT VO Adjustable output voltage range 0.6 VI V Vref Reference voltage 600 mV MODE = VIN, PWM operation, VFB(PWM) Feedback voltage –1.5 0 1.5 2.3 V ≤ VIN ≤ 6 V, See (2) % MODE = GND, device in PFM mode, VFB(PFM) Feedback voltage PFM mode 1 +1% voltage positioning active, See (1) Load regulation - 0.5 %/A Time from active EN to reach 95% of 500 tStart Up Start-up time µs VO tRamp VO ramp-up time Time to ramp from 5% to 95% of VO 250 µs VI = 3.6 V, VI = VO = VSW, EN = GND, Ilkg Leakage current into SW pin 0.1 1 µA See (3) (1) In PFM mode, the internal reference voltage is set to typ. 1.01 × V ref . See the parameter measurement information. (2) For VIN = VO + 1.0 V (3) In fixed output voltage versions, the internal resistor divider network is disconnected from FB pin. Copyright © 2007–2008, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): TPS62290 TPS62291 TPS62293 |
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