The SY21412A is a current mode DC/DC controller
targeted for both boost and SEPIC applications. SY21412A
has accurate
output 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.
![]()
- Parameters
- Features
- Description
| Part number | SY21412AFHC |
|---|
| Channel(#) | 1 |
|---|
| Vin (min) (V) | 3 |
|---|
| Vin (max) (V) | 25 |
|---|
| Topology | Boost,SEPIC,Flyback,Forward |
|---|
| Switching frequency (min)(kHz) | 300 |
|---|
| Switching frequency (max)(kHz) | 300 |
|---|
| Vout (min) (V) | 3 |
|---|
| Vout2 (min)(V) | |
|---|
| Vout (max) (V) | Programmable |
|---|
| Vout2 (max )(V) | |
|---|
| Vref accuracy (±%) | 1.5 |
|---|
| Vout accuracy(±%) | |
|---|
| Control mode | Peak current mode |
|---|
| Duty cycle (max)(%) | 90 |
|---|
| Operation mode | PFM |
|---|
| Iq (typ) (uA) | 130 |
|---|
| Features | Soft start,Current limit |
|---|
| Package | SSOP10 |
|---|
| Operating temperature range(°C) | -40 to 125 |
|---|
| Functional safety category | |
|---|
- Input Voltage Range 3V to 25V
- 300kHz Fixed Switching Frequency
- Output Current Limit
- External Compensation
- Programmable Soft-start Limits the Inrush Current
- Integrated Low Side Driver:1.5ASourcing and3ASinking
- RoHS Compliant and Halogen Free
- Compact Package: SSOP10
SY21412A is a current mode DC/DC controller targeted for both boost and sepic applications. SY21412A has accurate output 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_SY21412AFHC_1 is intended for evaluating 5~18V input, 2.5A output current limit, 12V output SEPIC applications.
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
The EVB_SY21412AFHC_2 is intended for evaluating 5V input, 1A output current limit, 24V output Boost applications.
