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LM10506 データシート(PDF) 7 Page - Texas Instruments |
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LM10506 データシート(HTML) 7 Page - Texas Instruments |
7 / 43 page LM10506 www.ti.com SNVS729F – SEPTEMBER 2011 – REVISED AUGUST 2014 7.6 Buck 1 Electrical Characteristics (1) (2) (3) Unless otherwise noted, VIN = 5 V where: VIN = VVIN_B1 = VVIN_B2 = VVIN_B3. Limits apply for TJ = 25°C, unless otherwise noted. SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNIT IQ DC bias current in VIN No Load, PFM Mode 15 50(4) µA Buck 1 enabled, switching in IPEAK Peak switching current limit 1.6(4) 1.8 2.1(4) A PWM η Efficiency peak, Buck 1 (5) IOUT = 0.3 A 90% ƒSW Switching frequency 1.75(4) 2 2.3(4) MHz CIN Input capacitor (5) 4.7 µF Output filter capacitor (5) 10 10 100 COUT 0 mA ≤ IOUT ≤ 1.3 A Output capacitor ESR (5) 20 m Ω L Output filter inductance (5) 2.2 µH DC line regulation (5) 3.3 V ≤ VIN ≤ 5 V, IOUT = 1.3 A 0.5 %/V ΔVOUT DC load regulation (5) 0.13 A ≤ IOUT ≤ 1.3 A 0.3 %/A Feedback pin input bias IFB VFB = 3 V 2.1 5(4) µA current 135 RDS-ON-HS High side switch on resistance m Ω VIN = 2.6 V 215 RDS-ON-LS Low side switch on resistance 85 190(4) m Ω Used in parallel with the high side FET while in Bypass mode. Resistance (DCR) of RDS-ON_BYPASS Bypass FET on resistance inductor = 100 m Ω VIN = 3.3 V 85 m Ω VIN = 2.6 V 120 STARTUP Start-up from shutdown, VOUT = 0V, no load, LC = Internal soft-start (turn on TSTART recommended circuit, using 0.1 ms time) (5) software enable, to VOUT = 95% of final value (1) All limits are ensured by design, test and/or statistical analysis. All electrical characteristics having room-temperature limits are tested during production with TJ = 25°C. All hot and cold limits are ensured 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) BUCK normal operation is ensured if VIN ≥ VOUT+1 V. (4) Limits apply over the entire operating junction temperature range of −40°C ≤ TA = TJ ≤ 85°C. (5) Specification ensured by design. Not tested during production. 7.7 Buck 2 Electrical Characteristics (1) (2) (3) Unless otherwise noted, VIN = 5 V where: VIN = VVIN_B1 = VVIN_B2 = VVIN_B3. Limits apply for TJ = 25°C, unless otherwise noted. SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNIT IQ DC bias current in VIN No Load, PFM Mode 15 50(4) µA Buck 2 enabled, switching in IPEAK Peak switching current limit 0.65(4) 1.1 1.55(4) A PWM η Efficiency peak, Buck 2 (5) IOUT = 0.3 A 90% ƒSW Switching frequency 1.75(4) 2 2.3(4) MHz (1) All limits are ensured by design, test and/or statistical analysis. All electrical characteristics having room-temperature limits are tested during production with TJ = 25°C. All hot and cold limits are ensured 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) BUCK normal operation is ensured if VIN ≥ VOUT+1 V. (4) Limits apply over the entire operating junction temperature range of −40°C ≤ TA = TJ ≤ 85°C. (5) Specification ensured by design. Not tested during production. Copyright © 2011–2014, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: LM10506 |
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