Datasheet LTC3810-5 (Analog Devices) - 3

LTC3810-5
elecTrical characTerisTics The
l
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C (Note 2), INTVCC = DRVCC = VBOOST = VON = VRNG = SHDN = UVIN = VEXTVCC = VNDRV = 5V, VMODE/SYNC = VSENSE+ = VSENSE– = VBGRTN = VSW = 0V, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loop
INTVCC INTVCC Supply Voltage l 4.35 14 V IQ INTVCC Supply Current SHDN > 1.5V (Notes 4, 5) 3 6 mA INTVCC Shutdown Current SHDN = 0V 240 600 µA IBOOST BOOST Supply Current SHDN > 1.5V (Note 5) 270 400 µA SHDN = 0V 0 5 µA VFB Feedback Voltage (Note 4) 0.796 0.800 0.804 V 0°C to 85°C l 0.794 0.800 0.806 V –40°C to 85°C l 0.792 0.800 0.806 V –40°C to 125°C (I-Grade) l 0.792 0.800 0.808 V –40°C to 150°C (H-Grade) l 0.792 0.800 0.812 V DVFB,LINE Feedback Voltage Line Regulation 5V < INTVCC < 14V (Note 4) l 0.002 0.02 %/V VSENSE(MAX) Maximum Current Sense Threshold VRNG = 2V, VFB = 0.76V 256 320 384 mV VRNG = 0V, VFB = 0.76V 70 95 120 mV VRNG = INTVCC, VFB = 0.76V 170 215 260 mV VSENSE(MIN) Minimum Current Sense Threshold VRNG = 2V, VFB = 0.84V –300 mV VRNG = 0V, VFB = 0.84V –85 mV VRNG = INTVCC, VFB = 0.84V –200 mV IVFB Feedback Current VFB = 0.8V 20 150 nA AVOL(EA) Error Amplifier DC Open Loop Gain 65 100 dB fU Error Amp Unity-Gain Crossover (Note 6) 25 MHz Frequency VMODE/SYNC MODE/SYNC Threshold VMODE/SYNC Rising 0.75 0.8 0.85 V IMODE/SYNC MODE/SYNC Current MODE/SYNC = 5V 0 1 µA VSHDN Shutdown Threshold 1.2 1.5 2 V ISHDN SHDN Pin Input Current 0 1 µA VUVIN UVIN Undervoltage Lockout UVIN Rising l 0.86 0.89 0.92 V UVIN Falling l 0.78 0.80 0.82 V Hysteresis 0.07 0.10 0.12 V VVCCUV INTVCC Undervoltage Lockout Linear Regulator Mode INTVCC Rising, INDRV = 100µA l 4.05 4.2 4.35 V External Supply Mode INTVCC Rising, NDRV = INTVCC = EXTVCC l 4.05 4.2 4.35 V Trickle-Charge Mode INTVCC Rising, NDRV = INTVCC, EXTVCC = 0 l 8.70 9 9.30 V INTVCC Falling 3.7 V
Oscillator and Phase-Locked Loop
tON On-Time ION = 100µA 1.55 1.85 2.15 µs ION = 300µA 515 605 695 ns tON(MIN) Minimum On-Time ION = 2000µA 100 ns tOFF(MIN) Minimum Off-Time 250 350 ns tON(PLL) tON Modulation Range by PLL Down Modulation ION = 100µA, VPLL/LPF = 0.6V 2.2 3.6 5 µs Up Modulation ION = 100µA, VPLL/LPF = 1.8V 0.6 1.2 1.8 µs IPLL/LPF Phase Detector Output Current Sinking Capability fPLLIN < fSW 15 µA Sourcing Capability fPLLIN > fSW –25 µA
Driver
IBG,PEAK BG Driver Peak Source Current VBG = 0V 0.7 1 A RBG,SINK BG Driver Pull-Down RDS(ON) 1 1.5 Ω ITG,PEAK TG Driver Peak Source Current VTG – VSW = 0 0.7 1 A RTG,SINK TG Driver Pull-Down RDS(ON) 1 1.5 Ω 38105fd 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts