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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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LM3556 bảng dữ liệu(PDF) 6 Page - Texas Instruments |
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LM3556 bảng dữ liệu(HTML) 6 Page - Texas Instruments |
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6 / 31 page  LM3556 SNVS796C – AUGUST 2011 – REVISED APRIL 2013 www.ti.com ELECTRICAL CHARACTERISTICS (1) (2) Limits in standard typeface are for TA = +25°C. Limits in boldface type apply over the full operating ambient temperature range ( −40°C ≤ TA ≤ +85°C). Unless otherwise specified, VIN = 3.6V. Symbol Parameter Conditions Min Typ Max Units Current Source Specifications 1.425 1.575 1.5A Flash, VOUT = 4V 1.5 A (-5%) (+5%) ILED Current Source Accuracy 42.3 51.7 46.88 mA Torch, VOUT = 3.6V 47 mA ( −10%) (+10%) 280 ILED = 1.5A Flash 250 (+12%) VHR Current Source Regulation Voltage mV 172.5 ILED = 46.88 mA Torch 150 (+15%) ON Threshold 4.86 5 5.1 Output Over-Voltage Protection Trip VOVP V Point OFF Threshold 4.75 4.88 4.99 Step-Up DC/DC Converter Specifications RPMOS PMOS Switch On-Resistance IPMOS = 1A 85 m Ω RNMOS NMOS Switch On-Resistance INMOS = 1A 65 −12% 1.7 +12% −12% 1.9 +12% ICL Switch Current Limit A −10% 2.5 +10% −12% 3.1 +12% VTRIP NTC Comparator Trip Threshold Configuration Register, bit [1] = 1 −6% 600 +6% mV UVLO Under Voltage Lockout Threshold Falling VIN 2.74 2.8 2.85 V INTC NTC Current −6% 75 +6% µA Input Voltage Flash Monitor trip VIVFM -3.2% 2.9 +3.2% V threshold fSW Switching Frequency 2.5V ≤ VIN ≤ 5.5V 3.72 4 4.28 MHz IQ Quiescent Supply Current Device Not Switching Pass Mode 0.6 0.75 mA Device Disabled, EN = 0V ISD Shutdown Supply Current 0.1 1.3 µA 2.5V ≤ VIN ≤ 5.5V Device Disabled, EN = 2V ISB Standby Supply Current 2.5 4 µA 2.5V ≤ VIN ≤ 5.5V Flash-to-Torch LED Current Settling TX Low to High, tTX 4 µs Time ILED = 1.5A to 46.88 mA ILED Overshoot in External IOS 0 mA to ITORCH 8 % Indicator Mode ENABLE, STROBE, TORCH, TX Voltage Specifications VIL Input Logic Low 0 0.4 2.5V ≤ VIN ≤ 5.5V V VIH Input Logic High 1.2 VIN I2C-Compatible Interface Specifications (SCL, SDA) VIL Input Logic Low 0 0.4 2.5V ≤ VIN ≤ 4.2V V VIH Input Logic High 1.2 VIN VOL Output Logic Low ILOAD = 3 mA 400 mV t1 SCL Clock Frequency 2.4 µs t2 Data In Setup Time to SCL High 100 t3 Data Out Stable After SCL Low 0 SDA Low Setup Time to SCL Low ns t4 100 (Start) SDA High Hold Time After SCL t5 100 High (Stop) (1) All voltages are with respect to the potential at the GND pin. (2) Min and Max limits are specified by design, test, or statistical analysis. Typical (typ.) numbers are not verified, but do represent the most likely norm. Unless otherwise specified, conditions for typical specifications are: VIN = 3.6V and TA = +25°C. 6 Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LM3556 |
Số phần tương tự - LM3556_14 |
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Mô tả tương tự - LM3556_14 |
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