SY20122A1ABC (SY8002A1ABC)
High Efficiency, 1.5MHz, 5.5V, 2A Synchronous Buck Regulator
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- Parameters
- Features
- Description
| Part number |
SY20122A1ABC |
| Channel(#) |
1 |
| Vin (min) (V) |
2.5 |
| Vin (max) (V) |
5.5 |
| Switching frequency (min)(kHz) |
1500 |
| Switching frequency (max)(kHz) |
1500 |
| Vout (min) (V) |
0.6 |
| Vout (max) (V) |
5 |
| Iout (max) (A) |
2 |
| Vout2 (min)(V) |
|
| Vout2 (max )(V) |
|
| Iout2 (max)(A) |
|
| Vref accuracy (±%) |
1.5 |
| Vout accuracy(±%) |
|
| Control mode |
COT OFF+Ipeak |
| Duty cycle (max)(%) |
100 |
| Operation mode |
Auto PFM |
| Iq (typ) (uA) |
50 |
| Features |
Power good, Output discharge |
| Package |
SOT23-6 |
| Operating temperature range(°C) |
-40 to 125 |
| Functional safety category |
|
- Low RDS(ON) for Internal Switches: 130mΩ Top, 85mΩ Bottom
- 2.5V ~ 5.5V Input Voltage Range
- Up to 2A Output Current
- 50µA Low Quiescent Current
- 1.5MHz High Switching Frequency Minimizes Required External Components
- Constant Off-Time and Peak Current Mode Control
- Internal Soft-Start Limits Inrush Current
- 100% Dropout Operation
- Power-Good Indicator
- Hiccup Mode for Short-Circuit Protection
- Output Auto-Discharge Function
- Input Under Voltage Lockout (UVLO)
- RoHS-Compliant and Halogen-Free
- Compact SOT23-6 Package
The SY20122A1 high efficiency and low quiescent current synchronous Buck regulator operates over a wide input voltage range of 2.5V to 5.5V, and can deliver an output current up to 2A. It integrates a top FET and a bottom FET with very low RDS(ON) to minimize conduction loss. The 1.5MHz pseudo-constant switching frequency enables using small external inductor and capacitor values.
The SY20122A1 employs constant off-time and peak current mode control strategy to achieve fast transient response and high efficiency at light loads. It also provides cycle-by-cycle current limiting and over temperature protection.
The SY20122A1 is highly integrated, so only the input and output capacitors, inductor, and feedback network components need to be selected for the targeted application specifications.
The SY20122A1 is available in a space-saving, low-profile 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_SY20122A1ABC is intended for evaluating 1.5MHz, 2A, 2.5~5.5V input, 1.8V output synchronous Buck regulator. It features enable control.
