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LTC3624IMSE-5 5V 1A Synchronous Buck Regulator with 95% Efficiency 2.7-5.5V Input 2.25MHz Switching <1µA Shutdown and 3mm × 3mm MSOP-10 Package
FeaTures
n Wide VIN Range: 2.7V to 17V
n Wide VOUT Range: 0.6V to VIN
n 95% Max Efficiency
n Low IQ: 3.5µA, Zero-Current Shutdown
n Constant Frequency (1MHz/2.25MHz)
n Fixed VOUT Options Available
n Low Dropout Operation (100% Duty Cycle) with Ultralow IQ
n 2A Rated Output Current
n ±1% Output Voltage Accuracy
n Current Mode Operation for Excellent Line and Load Transient Response
n Synchronizable to External Clock
n Pulse-Skipping, Forced Continuous, Burst Mode® Operation
n Internal Compensation and Soft-Start
n Overtemperature Protection
n Compact 8-Lead DFN (3mm × 3mm) Package
applicaTions
n Battery Powered Equipment
n Portable Instrumentation
n Emergency Radios
n General Purpose Step-Down Supplies
DescripTion
The LTC®3624/LTC3624-2 is a high efficiency 17V, 2A synchronous monolithic step-down regulator. The switch ing frequency is fixed to 1MHz (LTC3624) or 2.25MHz (LTC3624-2) with a ±40% synchronization range. The regulator features ultralow quiescent current and high efficiency over a wide VOUT range.
The step-down regulator operates from an input voltage range of 2.7V to 17V and provides an adjustable output range from 0.6V to VIN while delivering up to 2A of output current. A user-selectable mode input is provided to allow the user to trade off ripple noise for light load efficiency; Burst Mode operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest voltage ripple. The MODE pin can also be used to sync the switching frequency to an external clock.
INFORMATION
| Category | | |
| Mfr | | |
| Series | - | |
| Packaging | Tube | |
| Part Status | Active | |
| Function | Step-Down | |
| Output Configuration | Positive | |
| Topology | | |
| Output Type | | |
| Number of Outputs | 1 | |
| Voltage - Input (Min) | 2.7V | |
| Voltage - Input (Max) | 17V | |
| Voltage - Output (Min/Fixed) | | |
| Voltage - Output (Max) | - | |
| Current - Output | | |
| Frequency - Switching | 1MHz | |
| Synchronous Rectifier | Yes | |
| Operating Temperature | -40°C ~ 125°C (TJ) | |
| Mounting Type | Surface Mount | |
| Package / Case | | |
| Supplier Device Package | 12-MSOP-EP | |
| Base Product Number |
Drawing
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