Purchase SC4609, In-stock SC4609 From SeekIC.
Part Number: SC4609
Description: The SC4609 is a voltage mode step down (buck) regulator controller that provides accurate high efficie...
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SC4609
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DataSheet
General Description
SC4609 General Description
The SC4609 is a voltage mode step down (buck) regulator controller that provides accurate high efficiency power conversion from an input supply range of 2.7V to 5.5V. A high level of integration reduces external component count, and makes it suitable for low voltage applications where cost, size and efficiency are critical. The SC4609 is capable of producing an output voltage as low as 0.5V.
The SC4609 drives external, N-channel MOSFETs with a peak gate current of 1A. A non-overlap protection is provided for the gate drive signals to prevent shoot through of the MOSFET pair. The SC4609 features lossless current sensing of the voltage drop across the drain to source resistance of the high side MOSFET during its conduction period. Its switching frequency can be programmed up to 1MHz.
The quiescent supply current in sleep mode is typically lower than 10A. A external soft start is provided to prevent output voltage overshoot during start-up.
The SC4609 is an ideal choice for converting 3.3V, 5V or other low input supply voltages. It's available in 12 pin MLP package.
SC4609 Maximum Ratings
| Parameter | Symbol | Maximum | Units |
| Supply Voltage (V CC) | 6 | V | |
| PGND | ±0.3 | V | |
| Output Drivers (DRVH, DRVL) Currents Continuous Peak |
±0.25 | A | |
| ±1.00 | A | ||
| Inputs (VSENSE, COMP, FSET, ISET, SS) | -0.3 to 6 | V | |
| BST | 12 | V | |
| PHASE | -0.3 to 6 | V | |
| PHASE Pulse tpulse < 50ns | -2 to 7 | V | |
| Operating Ambient Temperature Range | TA | -40 to +85 | |
| Storage Temperature Range | TSTG | -65 to +150 | |
| Maximum Junction Temperature | TJ | +150 | |
| Peak IR Reflow Temperature, 10 - 40s | TPKG | 260 | |
| ESD Rating (Human Body Model) | ESD | 4 | kV |
SC4609 Features
` Asynchronous start up
` Programmable switching frequency up to 1MHz
` BiCMOS voltage mode PWM controller
` 2.7V to 5.5V input voltage range
` Output voltage as low as 0.5V
` +/-1% reference accuracy
` Sleep mode (Icc = 10A typ)
` Adjustable lossless short circuit current limiting
` Combination pulse by pulse & hiccup mode current limit
` High efficiency synchronous switching
` 1A peak current driver
` External soft start
` 12-pin MLP Lead-free package, fully WEEE and RoHS compliant
` Programmable switching frequency up to 1MHz
` BiCMOS voltage mode PWM controller
` 2.7V to 5.5V input voltage range
` Output voltage as low as 0.5V
` +/-1% reference accuracy
` Sleep mode (Icc = 10A typ)
` Adjustable lossless short circuit current limiting
` Combination pulse by pulse & hiccup mode current limit
` High efficiency synchronous switching
` 1A peak current driver
` External soft start
` 12-pin MLP Lead-free package, fully WEEE and RoHS compliant
SC4609 Typical Application
· Distributed power architecture
· Servers/workstations
· Local microprocessor core power supplies
· DSP and I/O power supplies
· Battery-powered applications
· Telecommunications equipment
· Data processing applications
· Servers/workstations
· Local microprocessor core power supplies
· DSP and I/O power supplies
· Battery-powered applications
· Telecommunications equipment
· Data processing applications
SC4609 Connection Diagram
SC4609EVB
PDF/DataSheet Download
- Datasheet: SC4609EVB
- File Size: 337495 KB
- Manufacturer: SEMTECH [Semtech Corporation]
- Click here to Download
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