品牌：LT
批号：17+
数量:10000
封装:SSOP
价格:面议
说明：全新原装现货，可出样品
IC特征：FEATURES
Synchronous Step-Down
Switching Controller
The LTC®3850 is a high performance dual synchronous
step-down switching regulator controller that drives all
N-channel power MOSFET stages. A constant-frequency
current mode architecture allows a phase-lockable frequency
of up to 780kHz. Power loss and supply noise are
minimized by operating the two controller output stages
out of phase.
OPTI-LOOP® compensation allows the transient response
to be optimized over a wide range of output capacitance
and ESR values. The LTC3850 features a precision 0.8V
reference and a power good output indicator. A wide 4V to
24V (28V maximum/30V for LTC3850I) input supply range
encompasses most battery chemistries and intermediate
bus voltages.
Independent TK/SS pins for each controller ramp the
output voltages during start-up. Current foldback limits
MOSFET heat dissipation during short-circuit conditions.
The MODE/PLLIN pin selects among Burst Mode®
operation, pulse-skipping mode, or continuous inductor
current mode and allows the IC to be synchronized to an
external clock.
The LTC3850 is available in low profi le 28-pin 4mm × 4mm,
4mm × 5mm QFN and narrow SSOP packages.
High Effi ciency Dual 3.3V/2.5V Step-Down Converter
n Dual, 180° Phased Controllers Reduce Required
Input Capacitance and Power Supply Induced Noise
n High Effi ciency: Up to 95%
n RSENSE or DCR Current Sensing
n ±1% 0.8V Output Voltage Accuracy
n Phase-Lockable Fixed Frequency 250kHz to 780kHz
n Supports Pre-Biased Output
n Dual N-Channel MOSFET Synchronous Drive
n Wide VIN Range: 4V to 24V (30V for LTC3850I)
Operation
n Adjustable Soft-Start Current Ramping or Tracking
n Foldback Output Current Limiting
n Output Overvoltage Protection
n Power Good Output Voltage Monitor
n 28-Pin 4mm × 4mm, 4mm × 5mm QFN and Narrow
SSOP Packages
联系人:程小姐
手机:15919480276
电话:0755- 21015360 & 23038182
传真:0755-23038182
地址:深圳市福田区振华路海外装饰大厦综合大楼2栋B段4楼4014B-33C
