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LM3310 датащи(PDF) 6 Page - Texas Instruments |
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LM3310 датащи(HTML) 6 Page - Texas Instruments |
6 / 33 page LM3310 SNVS341E – AUGUST 2005 – REVISED MAY 2013 www.ti.com Electrical Characteristics Specifications in standard type face are for TJ = 25°C and those with boldface type apply over the full Operating Temperature Range ( TJ = −40°C to +125°C). Unless otherwise specified, VIN =2.5V and IL = 0A. Parameter Test Conditions Min(1) Typ(2) Max(1) Units IQ Quiescent Current FB = 2V (Not Switching) 690 1100 µA VSHDN = 0V 0.5 0.04 8.5 660kHz Switching 2.1 2.8 mA 1.28MHz Switching 3.1 4.0 VFB Feedback Voltage 1.231 1.263 1.287 V %VFB/ΔVIN Feedback Voltage Line 2.5V ≤ VIN ≤ 7V -0.26 0.089 0.42 %/V Regulation ICL Switch Current Limit (3) (4) 2.0 2.6 A IB FB Pin Bias Current (5) 27 160 nA ISS SS Pin Current 8.5 11 13.5 µA VSS SS Pin Voltage 1.20 1.24 1.28 V VIN Input Voltage Range 2.5 7 V gm Error Amp Transconductance ΔI = 5µA 26 74 133 µmho AV Error Amp Voltage Gain 69 V/V DMAX Maximum Duty Cycle fS = 660kHz 80 91 % fS = 1.28MHz 80 89 fS Switching Frequency FREQ = Ground 440 660 760 kHz FREQ = VIN 1.0 1.28 1.5 MHz ISHDN Shutdown Pin Current VSHDN = 2.5V 8 13.5 µA VSHDN = 0.3V 1 2 IL Switch Leakage Current VSW = 20V 0.03 5 µA RDSON Switch RDSON ISW = 500mA 0.18 0.35 Ω ThSHDN SHDN Threshold Output High, VIN = 2.5V to 7V 1.4 V Output Low, VIN = 2.5V to 7V 0.4 UVP Undervoltage Protection On Threshold (Switch On) 2.5 2.4 V Threshold Off Threshold (Switch Off) 2.3 2.1 IFREQ FREQ Pin Current FREQ = VIN = 2.5V 2.7 13.5 µA Operational Amplifier VOS Input Offset Voltage Buffer configuration, VO = 5.7 15 mV AVIN/2, no load IB Input Bias Current (POS Pin) Buffer configuration, VO = 200 550 nA AVIN/2, no load (5) VOUT Swing Buffer, RL=2kΩ, VO min. 0.001 0.03 V Buffer, RL=2kΩ, VO max. 7.9 7.97 AVIN Supply Voltage 4 14 V Is+ Supply Current Buffer, VO = AVIN/2, No Load 1.5 7.8 mA IOUT Output Current Source 90 138 195 mA Sink 105 135 175 Gate Pulse Modulation VFLK VFLK Voltage Levels Rising edge threshold 1.4 V Falling edge threshold 0.4 (1) All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (2) Typical numbers are at 25°C and represent the most likely norm. (3) Duty cycle affects current limit due to ramp generator. (4) Current limit at 0% duty cycle. See Typical Performance Characteristics section for Switch Current Limit vs. VIN (5) Bias current flows into pin. 6 Submit Documentation Feedback Copyright © 2005–2013, Texas Instruments Incorporated Product Folder Links: LM3310 |
Аналогичный номер детали - LM3310 |
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Аналогичное описание - LM3310 |
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