BC847B/215
Nexperia USA Inc.
The Nexperia USA Inc. BC847B/215 is a bipolar transistor. It is RoHS3 Compliant and has an MSL Level 1 rating.
| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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3,200 pcs
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3200 pcs | On Request | 1 | On Request | On Request | 12+ | On Request | On Request |
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| Tape & Reel |
The LTC3621EDCB-2#PBF from LT is a 17V, 1A synchronous step-down regulator designed for efficient power conversion. This component operates with a low quiescent current of 3.5μA, making it suitable for power-sensitive applications.
Key electrical characteristics include a peak current limit ranging from 1.44A to 1.76A for E/I-grades and 1.2A to 1.80A for H-grades. It also features undervoltage lockout (UVLO) with a typical threshold of 2.6V and hysteresis of 250mV, as well as overvoltage lockout (OVLO) with a rising threshold of 19V and hysteresis of 300mV.
The oscillator frequency for the LTC3621-2 variant is typically 2.25MHz (E/I-grade) or 1.7MHz (H-grade). The device includes a Power Good output with a typical resistance of 350Ω and a delay of 0 cycles (low to high) and 32 cycles (high to low).
This DC DC switching controller is designed for various power management applications where efficiency and low quiescent current are critical.
The typical oscillator frequency is 2.25 MHz for E/I-grade devices, with a minimum of 2.05 MHz and maximum of 2.45 MHz.
For E/I-grade devices, the typical peak current limit is 1.60 A, with a minimum of 1.44 A and maximum of 1.76 A. For H-grade, the minimum is 1.30 A and maximum is 1.80 A.
The undervoltage lockout rising threshold is 2.6 V typical, with a minimum of 2.4 V and maximum of 2.7 V. Hysteresis is 250 mV.
The overvoltage lockout rising threshold is 19 V typical, with a minimum of 18 V and maximum of 20 V. Hysteresis is 300 mV.
The internal soft-start time is 0.8 ms typical.
Yes, it has a power good output with a window of ±7.5% to ±12.5% and a typical resistance of 275 Ω to 350 Ω. The delay from low to high is 0 cycles and from high to low is 32 cycles.
The MODE/SYNC pin supports Pulse-Skipping Mode, Burst Mode Operation, and Forced Continuous Mode. External synchronization is possible from 60% to 140% of the oscillator frequency.