High Efficiency, 800kHz, 40V Input, 1.2A Asynchronous Step Down Regulator
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- Parameters
- Features
- Description
| Part number |
SY21061ABC |
| Channel(#) |
1 |
| Vin (min) (V) |
5 |
| Vin (max) (V) |
40 |
| Switching frequency (min)(kHz) |
800 |
| Switching frequency (max)(kHz) |
800 |
| Vout (min) (V) |
0.6 |
| Vout (max) (V) |
12 |
| Iout (max) (A) |
1.2 |
| Vout2 (min)(V) |
|
| Vout2 (max )(V) |
|
| Iout2 (max)(A) |
|
| Vref accuracy (±%) |
2 |
| Vout accuracy(±%) |
|
| Control mode |
COT OFF+Ipeak |
| Duty cycle (max)(%) |
80 |
| Operation mode |
Auto PFM |
| Iq (typ) (uA) |
160 |
| Features |
Asynchronous |
| Package |
SOT23-6 |
| Operating temperature range(°C) |
-40 to 125 |
| Functional safety category |
|
- · Low RDS(ON) for Internal N-channel Power FET: 180mΩ
- · 5V to 40V Input Voltage Range
- · Up to 1.2A Output Current
- · 800kHz Switching Frequency
- · Constant Off-Time and Peak Current Mode Control
- · Internal Soft-Start Limits Inrush Current
- · ±2% 0.6V Reference
- · Output Short Circuit Protection
- · Cycle-by-Cycle Peak Current Limit
- · Over Temperature Protection
- · RoHS-Compliant and Halogen-Free
- · Compact SOT23-6 Package
The SY21061 high-efficiency asynchronous Buck converter can deliver 1.2A output current over a wide input voltage range from 5V to 40V. The SY21061 employs a constant off-time and peak current mode control strategy to achieve fast transient responses. It integrates a main switch with low RDS(ON) to minimize conduction loss.
The 800kHz switching frequency permits low output voltage ripple and reduces external inductor and capacitor sizes. The SY21061 also provides cycle-by-cycle current limiting, over temperature protection, and output short circuit protection.
The SY21061 is available in a compact SOT23-6 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
The EVB_SY21061ABC is intended for evaluating 1.2A output current, 40V Input, non-synchronous stepdown DC-DC regulator.
