The SY21401 is a current mode DC/DC controller
targeted for Boost, SEPIC,
Flyback and Forward applications. The SY21401 has
an accurate DC input
current limit.
External compensation provides flexible adjustment of control loops for different
applications. The internal low side driver is capable of sourcing 1.5A and sinking 3A current.
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- Parameters
- Features
- Description
| Part number | SY21401DBC |
|---|
| Channel(#) | 1 |
|---|
| Vin (min) (V) | 3 |
|---|
| Vin (max) (V) | 25 |
|---|
| Topology | Boost,SEPIC,Flyback,Forward |
|---|
| Switching frequency (min)(kHz) | 500 |
|---|
| Switching frequency (max)(kHz) | 500 |
|---|
| Vout (min) (V) | 3 |
|---|
| Vout2 (min)(V) | |
|---|
| Vout (max) (V) | Programmable |
|---|
| Vout2 (max )(V) | |
|---|
| Vref accuracy (±%) | 2 |
|---|
| Vout accuracy(±%) | |
|---|
| Control mode | Peak current mode |
|---|
| Duty cycle (max)(%) | 85 |
|---|
| Operation mode | PFM |
|---|
| Iq (typ) (uA) | 170 |
|---|
| Features | Soft start,Input current limit |
|---|
| Package | DFN3x3-10 |
|---|
| Operating temperature range(°C) | -40 to 125 |
|---|
| Functional safety category | |
|---|
- Input Voltage Range 3V to 25V
- 500kHz Fixed Switching Frequency
- An Accurate DC Input Current Limit
- External Compensation
- Internal Soft-start Limits the Inrush Current
- Integrated Low Side Driver:1.5ASourcing and3ASinking
- RoHS Compliant and Halogen Free
- Compact Package: DFN3×3-10
The SY21401 is a current mode DC/DC controller targeted for Boost, Sepic, Flyback and Forward applications. The SY21401 has an accurate DC input current limit. External compensation provides flexible adjustment of control loops for different applications. The internal low side driver is capable of sourcing 1.5A and sinking 3A current.
Evaluation Board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
The EVB_SY21401DBC_1 is intended for evaluating 6~18V input, 4A input current limit, 12V output SEPIC applications.
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
The EVB_SY21401DBC_2 is intended for evaluating 6~8.4V input, 2A output current, 12V output Boost applications.
