High Efficiency Fast Response, 12A, 25V Input, Fixed 5.15V Output Synchronous Buck Converter with 100mA 5V LDO
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- Parameters
- Features
- Description
| Part number |
SY83012CTMC |
| Channel(#) |
2 |
| Vin (min) (V) |
5.5 |
| Vin (max) (V) |
25 |
| Switching frequency (min)(kHz) |
510 |
| Switching frequency (max)(kHz) |
690 |
| Vout (min) (V) |
5.07 |
| Vout (max) (V) |
5.23 |
| Iout (max) (A) |
12 |
| Vout2 (min)(V) |
4.9 |
| Vout2 (max )(V) |
5.15 |
| Iout2 (max)(A) |
0.1 |
| Vref accuracy (±%) |
±1.5% |
| Vout accuracy(±%) |
|
| Control mode |
COT+Ripple |
| Duty cycle (max)(%) |
|
| Operation mode |
PFM/USM Selectable |
| Iq (typ) (uA) |
35 |
| Features |
Power Good Indicator; Output Auto-Discharge; Latch-off UVP, OVP, OTP; UVLO |
| Package |
QFN3×4-13 |
| Operating temperature range(°C) |
-40°C to 125°C |
| Functional safety category |
|
- Low RDS(ON) for Internal MOSFETs: 10mΩ Top, 5mΩ Bottom
- Wide Input Voltage Range: 5.5V ~ 25V
- Fixed 5.15V Output Voltage
- Support 98% Duty Cycle Operation
- 12A Continuous Output Current Capability
- 100mA LDO Current Capability
- 35μA Low Quiescent Current
- 1Ω Integrated Bypass Switch
- 600kHz Pseudo-Constant Frequency
- ±1% Internal Reference Voltage under -40°C ~ 125°C
- PFM/USM Selectable Light Load Operation Mode
- Internal 0.8ms Soft-Start Limits the Inrush Current
- Support Smooth Startup with Pre-Biased Output
- Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
- Power Good Indicator
- Output Auto-Discharge Function
- Cycle-by-Cycle Valley, Peak and Reverse Over Current Protection (OCP) for Buck
- Latch-off Mode Output Under Voltage Protection (UVP) for Buck
- Latch-off Mode Output Over Voltage Protection (OVP) for Buck
- Latch-off Mode Over Temperature Protection (OTP) for Buck
- Auto-recovery Mode Output Under Voltage (UVP) Protection for LDO
- Auto-recovery Mode Over Temperature Protection (OTP) for LDO
- Input Under Voltage Lockout (UVLO)
- RoHS Compliant and Halogen Free
- Compact Package: QFN3×4-13
The SY83012C is a high efficiency synchronous buck converter operating over a wide input voltage range of 5.5V to 25V and capable of delivering up to 12A current. The device integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. In addition, it operates at pseudo-constant frequency of 600kHz under heavy load conditions to minimize the size of inductor and capacitor. The SY83012C also provides a fixed 5V LDO with 100mA current capability which can be used to power the external peripheries. The 5V LDO can switch over to Buck regulator output to save power loss.
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
EVB_SY83012CTMC_1 is intended for evaluating fast response, 12A, 25V Input synchronous Buck regulator.
