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S85V1A Datasheet(PDF) 1 Page - Seiko Instruments Inc |
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S85V1A Datasheet(HTML) 1 Page - Seiko Instruments Inc |
1 / 30 page S-85V1A Series www.sii-ic.com 5.5 V INPUT, 200 mA SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR WITH 10 μA QUIESCENT CURRENT © SII Semiconductor Corporation, 2017 Rev.1.0_00 1 The S-85V1A Series is a step-down switching regulator which features high efficiency and fast transient response. Since PWM / PFM switching control automatically switches to PFM control when under light load, high efficiency is realized. This IC is suitable for mobile devices and battery powered devices due to introduction of own distinctive COT (Constant On-Time) control. Also, high-density mounting is realized by adopting super-small, thin SNT-6A package. Therefore, the occupancy area including a coil, an input capacitor and an output capacitor can be reduced to 2.0 mm × 4.5 mm = 9.0 mm 2, and it contributes to miniaturization of electronic equipment. Features Applications • Current consumption: 10 μA quiescent current • Bluetooth device • Efficiency: 93% • Wireless sensor network device • Fast transient response: COT control • Healthcare equipment • Input voltage: 2.2 V to 5.5 V • Smart meter • Output voltage: 0.7 V to 2.5 V, in 0.05 V step • Portable game device 2.6 V to 3.9 V, in 0.1 V step • Remote control • Output voltage accuracy: ±1.5% (1.0 V ≤ VOUT ≤ 3.9 V) Package • SNT-6A (1.80 mm × 1.57 mm × t0.5 mm max.) ±15 mV (0.7 V ≤ VOUT < 1.0 V) • Switching frequency: 1.0 MHz (at PWM operation) • High side power MOS FET on-resistance: 450 m Ω • Low side power MOS FET on-resistance: 350 m Ω • Soft-start function: 1 ms typ. • Under voltage lockout function (UVLO): 1.8 V typ. (detection voltage) • Thermal shutdown function: 135°C typ. (detection temperature) • Overcurrent limit function: 450 mA (at L = 2.2 μH) • Automatic recovery type short-circuit protection function:Hiccup control • Input and output capacitors: Ceramic capacitor compatible • Operation temperature range: Ta = −40°C to +85°C • Lead-free (Sn 100%), halogen-free Typical Application Circuit VSS VIN CIN 10 F PVSS VOUT EN SW COUT 10 F L 2.2 H VOUT VIN Efficiency VOUT(S) = 1.8 V IOUT [mA] 110 0.1 1000 100 0 100 80 60 40 20 VIN = 2.5 V VIN = 3.6 V VIN = 4.2 V |
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