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LM3648 датащи(PDF) 5 Page - Texas Instruments |
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LM3648 датащи(HTML) 5 Page - Texas Instruments |
5 / 38 page LM3648, LM3648TT www.ti.com SNVSA68B – OCTOBER 2014 – REVISED SEPTEMBER 2015 6.5 Electrical Characteristics Typical limits tested at TA = 25°C. Minimum and maximum limits apply over the full operating ambient temperature range ( −40°C ≤ TA ≤ +85°C). Unless otherwise specified, VIN = 3.6 V, HWEN = VIN. (1) (2) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CURRENT SOURCE SPECIFICATIONS VOUT = 4 V, flash code = 0x3F = 1.5 A –7% 1.5 7% A flash ILED Current source accuracy VOUT = 4 V, torch code = 0x3F = 178.6 mA –10% 178.6 10% mA torch Current source accuracy VOUT = 4 V, torch code = 0x3F = 357.2 mA ILED –10% 357.2 10% mA (LM3648TT) torch ILED = 1.5 A Flash 290 LED current source regulation VHR mV voltage ILED = 178.6 mA Torch 158 LED current source regulation Torch and VHR ILED = 357.2 mA 270 mV voltage (LM3648TT) Flash ON threshold 4.86 5 5.1 VOVP V OFF threshold 4.75 4.88 4.99 STEP-UP DC-DC CONVERTER SPECIFICATIONS RPMOS PMOS switch on-resistance 86 m Ω RNMOS NMOS switch on-resistance 65 Reg 0x07, bit[0] = 0 –12% 1.9 12% ICL Switch current limit A Reg 0x07, bit[0] = 1 –12% 2.8 12% VUVLO Undervoltage lockout threshold Falling VIN –2% 2.5 2% V VTRIP NTC comparator trip threshold Reg 0x09, bits[3:1] = '100' –5% 0.6 5% V INTC NTC current –6% 50 6% µA Input voltage flash monitor trip VIVFM Reg 0x02, bits[5:3] = '000' –3% 2.9 3% V threshold IQ Quiescent supply current Device not switching pass mode 0.3 0.75 mA Device disabled, HWEN = 0 V ISD Shutdown supply current 0.1 4 µA 2.5 V ≤ VIN ≤ 5.5 V Device disabled, HWEN = 1.8 V ISB Standby supply current 2.5 10 µA 2.5 V ≤ VIN ≤ 5.5 V HWEN, TORCH/TEMP, STROBE, TX VOLTAGE SPECIFICATIONS VIL Input logic low 0 0.4 V 2.5 V ≤ VIN ≤ 5.5 V VIH Input logic high 1.2 VIN V I2C-COMPATIBLE INTERFACE SPECIFICATIONS (SCL, SDA) VIL Input logic low 0 0.4 2.5 V ≤ VIN ≤ 4.2 V V VIH Input logic high 1.2 VIN VOL Output logic low ILOAD = 3 mA 400 mV (1) Minimum (MIN) and Maximum (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 = 3.6 V and TA = 25°C. (2) All voltages are with respect to the potential at the GND pin. 6.6 Timing Requirements MIN NOM MAX UNIT t1 SCL clock period 2.4 µs t2 Data in set-up time to SCL high 100 ns t3 Data out stable After SCL low 0 ns t4 SDA low set-up time to SCL low (start) 100 ns t5 SDA high hold time after SCL high (stop) 100 ns Copyright © 2014–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM3648 LM3648TT |
Аналогичный номер детали - LM3648 |
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Аналогичное описание - LM3648 |
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