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TPS65708YZHR Datasheet(PDF) 3 Page - Texas Instruments |
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TPS65708YZHR Datasheet(HTML) 3 Page - Texas Instruments |
3 / 22 page TPS65708 www.ti.com SLVSAE1A – OCTOBER 2010 – REVISED FEBRUARY 2011 RECOMMENDED OPERATING CONDITIONS Over operating free-air temperature range (unless otherwise noted). MIN NOM MAX UNIT VIN1/2 Input voltage range for step-down converter DCDC1and DCDC2 3.6 6 V VOUTDCDC1/2 Output voltage range for DCDC1 and DCDC2 step-down converter 0.8 3.3 V IOUTDCDC1 DC output current at L1 or L2 400 mA L Inductor at L1 or L2(1) 1 1.5 2.2 µH VINLDO1 Input voltage range for LDO1 1.7 6 V VLDO Output voltage range for LDO1 and LDO2 0.8 3.3 V VINLDO2 Input voltage range for LDO2 1.7 6 V ILDO Output current at LDO1 or LDO2 200 mA CINDCDC1/2 Input capacitor at VIN1 and VIN2 4.7 µF COUTDCDC1/2 Output capacitor at VOUT1, VOUT2 4.7 10 22 µF COUTLDO1/2 Output capacitor at VLDO1, VLDO2 2.2 µF TA Operating ambient temperature –40 85 °C TJ Operating junction temperature –40 125 °C (1) To support a typical inductor value of 1.5 µH, the minimum inductance can go as low as 1.0µH. It is not recommended to use a 1µH labeled inductor as the inductance will drop significantly below 1 µH in operation due to initial tolerances and saturation. ELECTRICAL CHARACTERISTICS Unless otherwise noted: VIN1 = VIN2 = VCC = 5V, L = 1.5 µH, COUTDCDCx = 10µF, COUTLDOx = 2.2µF, TA = –40°C to 85°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT DCDC1, DCDC2, LDO1 and LDO2 enabled, IOUT = 0 mA, MODE = 0; (PFM mode) 140 200 μA ISINK in standby for PWM = 0 DCDC1, DCDC2, LDO1 and LDO2 enabled, IOUT = 0 mA, MODE = 1 ; (PWM mode) Operating quiescent current DCDCx and 4 mA IQ ISINK in standby if PWM = 0; LDOx Not including inductor losses DCDC1, DCDC2, LDO1 and LDO2 enabled, IOUT = 0 mA, MODE = 0; (PFM mode) ; 170 μA ISINK in standby PWM = 0; During power-up sequencing DCDCx, LDOx and ISINK disabled; ISD Shutdown Current 6 15 μA VCC < 1.8V DIGITAL PINS ( MODE) VIH High Level Input Voltage for MODE 1.2 VCC V VIL Low Level Input Voltage for MODE 0 0.4 V Ilkg Input Leakage Current MODE tied to GND or VIN1 / VIN2 0.01 0.1 μA UNDERVOLTAGE LOCKOUT (UVLO), SENSED AT PIN VCC Internal undervoltage lockout threshold VCC, VIN1, VIN2 rising 3.5 3.6 3.7 V UVLO Internal undervoltage lockout threshold VCC, VIN1, VIN2 falling 130 mV hysteresis STEP-DOWN CONVERTERS VIN1 Input voltage for DCDC1 3.5 6 V VIN2 Input voltage for DCDC2 3.5 6 V POWER SWITCH High side MOSFET on-resistance VIN1 / VIN2 = 3.6V 250 400 m Ω RDS(on) Low side MOSFET on-resistance VIN1 / VIN2 = 3.6V 150 300 m Ω ILIMF Forward current limit 3.6V ≤ VIN1 / VIN2 ≤ 6V 650 820 1050 mA IO DC output current VIN1 / VIN2 > 3.5V , L = 1.5µH 400 mA © 2010–2011, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s) :TPS65708 |
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