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LM10692 データシート(PDF) 11 Page - Texas Instruments |
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LM10692 データシート(HTML) 11 Page - Texas Instruments |
11 / 48 page LM10692 www.ti.com SNVSA53 – JULY 2014 7.9 Buck 4 Electrical Characteristic (1) (2) over operating free-air temperature range (unless otherwise noted) Unless otherwise noted, VIN = 3.3V, where: VIN =VIN_B1=VIN_B2, VIN_B3=VIN_B4=VIN_B5= VIN_B6. The application circuit used is the one shown in “Typical Application Circuit". TA = 25°C PARAMETER TEST CONDITIONS UNIT MIN TYP(3) MAX VOUT Output Voltage default value 1.75 1.8 1.85 V IOUT-MAX Continuous maximum load current Buck 4 enabled,(4) 2.5 A IPEAK Peak switching current limit Buck 4 enabled 3.6 A ηSW4-5V Efficiency, Buck 4(4) IOUT = 5mA to 1A, VOUT = 1.8 V, 80% 90% L = 1 µH, ESRL = 50 m Ω FSW Switching Frequency PWM operation 2 MHz CIN Input Capacitor(4) 0 mA ≤ IOUT ≤ IOUT-MAX 22 µF COUT Output Filter Capacitor(4) 22 µF Output Capacitor ESR(4) 10 m Ω L Output Filter Inductance(4) 1 µH VFB4 Feedback Voltage VOUT = 1.8V (default), 1.8 V PWM Mode, No Load ∆VOUT DC Line regulation(4) 2.9 ≤ VIN ≤ 5.0 V, -1% +1% IOUT = IOUT-MAX DC Load regulation(4) Vin = 3.3 V, -1% +1% 0.1 × IOUT-MAX ≤ Iout ≤ IOUT-MAX IFB Feedback pin input bias current VFB = 1.8 V 3.5 µA RDS-ON-HS High Side Switch On Resistance Measured pin-to-pin, Vin = 3.3 V 85 m Ω RDS-ON-LS Low Side Switch On Resistance 60 m Ω RDISCHARGE Active Discharge Resistance Measured from FB to GND 18 Ω Tstart Internal soft-start (turn on time) Start up from shutdown, VOUT = 0 V, no load, VOUT = 95% of 1.8 V, (4) Cout 165 µs = 22µF (1) All limits are guaranteed by design, test and/or statistical analysis. All electrical characteristics having room-temperature limits are tested during production with TA = 25M C. All hot and cold limits are guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control. (2) Capacitors: Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) are used in setting electrical characteristics. (3) Specification ensured by design. Not tested during production. (4) Specification ensured by design. Not tested during production. Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: LM10692 |
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