High Efficiency, 500kHz, 3A, 18V Input Synchronous Step Down Regulator
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- Parameters
- Features
- Description
| Part number |
SY21113DAIC |
| Channel(#) |
1 |
| Vin (min) (V) |
4.5 |
| Vin (max) (V) |
18 |
| Switching frequency (min)(kHz) |
500 |
| Switching frequency (max)(kHz) |
500 |
| Vout (min) (V) |
0.6 |
| Vout (max) (V) |
5.5 |
| Iout (max) (A) |
3 |
| Vout2 (min)(V) |
|
| Vout2 (max )(V) |
|
| Iout2 (max)(A) |
|
| Vref accuracy (±%) |
1.5 |
| Vout accuracy(±%) |
|
| Control mode |
COT+Ivalley |
| Duty cycle (max)(%) |
75 |
| Operation mode |
Auto PFM |
| Iq (typ) (uA) |
100 |
| Features |
Power good |
| Package |
TSOT23-8 |
| Operating temperature range(°C) |
-40 to 125 |
| Functional safety category |
|
- Low RDS(ON) for Internal Switches (Top/Bottom): 80mΩ/40mΩ
- 4.5-18V Input Voltage Range
- 3A Output Current Capability
- 500 kHz Switching Frequency
- Instant PWM Architecture to Achieve Fast Transient Responses
- Cycle-by-cycle Current Limitation
- Hiccup Mode Short Circuit Protection
- Power Good Indicator
- Programmable Soft-start Time to Limit the Inrush Current
- ±1.5% 0.6V Reference
- Thermal Shut Down With Auto-recovery
- RoHS Compliant and Halogen Free
- TSOT23-8 Package
The SY21113D is a high efficiency 500kHz synchronous step-down DC/DC converter capable of delivering 3A current. The SY21113D operates over a wide input voltage range from 4.5V to 18V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.
Low output voltage ripple and small external inductor and capacitor sizes are achieved with 500kHz switching frequency. It adopts the instant PWM architecture to achieve fast transient responses for high step down applications
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_SY21113DAIC is intended for evaluating 3A, 18V input, 500kHz synchronous Buck regulator.
