High Efficiency, Fast Response, 6.0A, 18V Input Synchronous Step Down Regulator
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- Parameters
- Features
- Description
| Part number |
SY21197ADC |
| Channel(#) |
|
| Vin (min) (V) |
4.5 |
| Vin (max) (V) |
18 |
| Switching frequency (min)(kHz) |
|
| Switching frequency (max)(kHz) |
|
| Vout (min) (V) |
0.6 |
| Vout (max) (V) |
|
| Iout (max) (A) |
6 |
| Vout2 (min)(V) |
|
| Vout2 (max )(V) |
|
| Iout2 (max)(A) |
|
| Vref accuracy (±%) |
±1.5% |
| Vout accuracy(±%) |
|
| Control mode |
|
| Duty cycle (max)(%) |
|
| Operation mode |
|
| Iq (typ) (uA) |
|
| Features |
Auto-Discharge |
| Package |
TSOT23-6 |
| Operating temperature range(°C) |
|
| Functional safety category |
|
- Low RDS(ON) for Internal Switches (Top/Bottom): 29mΩ/19mΩ
- 4.5-18V Input Voltage Range
- 6A Output Current Capability
- 400kHz Switching Frequency Minimize the External Components
- Stable with 22µF COUT and 1µH Inductor
- Instant PWM Architecture to Achieve Fast Transient Responses
- Internal Soft-start Limits the Inrush Current
- Cycle-by-cycle Peak/Valley Current Limitation
- Hic-cup Mode Output Short Circuit Protection
- Thermal Shutdown with Auto Recovery
- Output Auto Discharge Function
- Compact Package: TSOT23-6
The SY21197 high-efficiency synchronous step-down DC/DC regulator operates over a wide input voltage range of 4.5V to 18V, and can deliver an output current up to 6A. It integrates a main switch and a synchronous switch with very low RDS(ON) to minimize conduction loss. The 400kHz pseudoconstant switching frequency enables using small external inductor and capacitor values
The SY21197 uses constant-on-time and ripple-based control to provide high efficiency at light loads, and to achieve fast transient responses for applications with high step-down ratios. It also provides cycle-by-cycle current limiting and overtemperature protection.
The SY21197 is available in a compact TSOT23-6 package.
Evaluation Board
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Photo of evaluation board
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Photo of evaluation board
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Photo of evaluation board
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Photo of evaluation board
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Photo of evaluation board
The EVB_SY21197ADC is intended for evaluating 6A, 18V input synchronous step-down DC/DC converter.
