(Hong Kong)
Product Summary
The LTC1874EGN#TR is a dual constant frequency current mode step-down DC/DC controller with excellent AC and DC load and line regulation. Each controller has an accurate undervoltage lockout that shuts down the individual controller when the input voltage falls below 2.0V. The LTC1874EGN#TR is configured with Burst Mode operation, which enhances efficiency at low output current for applications where efficiency is a prime consideration. To further maximize the life of a battery source, each external P-channel MOSFET is turned on continuously in dropout (100% duty cycle). In shutdown, each controller draws a mere 8mA. High constant operating frequency of 550kHz allows the use of small external inductors. The LTC1874EGN#TR is available in a small footprint 16-lead narrow SSOP.
Parametrics
LTC1874EGN#TR absolute maximum ratings: (1)Input Supply Voltage (VIN, PVIN): –0.3V to 10V; (2)SENSE–, PGATE Voltages : –0.3V to (VIN + 0.3V); (3)VFB, ITH/RUN Voltages : –0.3V to 2.4V; (4)PGATE Peak Output Current (<10ms): 1A; (5)Storage Ambient Temperature Range : –65℃ to 150℃; (6)Operating Temperature Range: –40℃ to 85℃; (7)Junction Temperature: 150℃; (8)Lead Temperature (Soldering, 10 sec): 300℃.
Features
LTC1874EGN#TR features: (1)High Efficiency: Up to 94%; (2)High Output Currents Easily Achieved; (3)Wide VIN Range: 2.5V to 9.8V; (4)Constant Frequency 550kHz Operation; (5)Burst ModeTM Operatioat Light Load; (6)Low Dropout: 100% Duty Cycle; (7)0.8V Reference Allows Low Output Voltages; (8)Current Mode Operatiofor Excellent; (9)Line and Load Transient Response; (10)Low Quiescent Current: 270mA (Each Controller); (11)Separate ShutdowPifor Each Controller; (12)ShutdowMode Draws Only 8mA Supply Current (Each Controller); (13)±2.5% Reference Accuracy; (14)Available i16-Lead Narrow SSOP; (15)Each Controller Functions Independent of the Other.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |
 LTC1874EGN#TR |
|
IC REG CTRLR BUCK PWM CM 16-SSOP |
Data Sheet |
|
|
||||||
|
LTC1874EGN#TRPBF |
|
IC REG CTRLR BUCK PWM CM 16-SSOP |
Data Sheet |
|
|
||||||
