1. Wide Input Voltage Range 2V ~ 26V
2. Wide Output Voltage Range 0.75V ~ 5.5V, 1.0% Initial Accuracy
3. Constant On Time PWM : Quasi Constant Switching Frequency; Adjustable Frequency from 200kHz to500kHz; Ultra Fast Transient Response
4. Integrated Bootstrap Diode
5. Integrated MOSFET Drivers with Shoot-Through Protection
6. Configurable Forced Continuous Current Mode or Power Saving Mode
7. Lossless, Programmable Overcurrent Protection Use Low-Side MOSFET RDS(ON)
8. Internal Soft Start
9. Over Voltage and Under Voltage Protection
10. Power OK Indication
11. WQFN4x4 - 16L, WQFN3x3 - 16L, VQFN3.5X3.5 - 14L, or TSSOP - 14L Packages
12. RoHS Compliant and 100% Lead Free
產品特性 1. The uP6128A/B is a high performance synchronous-rectified buck controller specifically designed for POL voltage
regulation in notebook PC application. The controller operates with 5V bias voltage and converts 2V~26V input
voltage to 0.75V~5.5V output voltage.
2. The uP6128A/B adopts constant-on-time PWM scheme that features easy-to-use, low external component count,
fast transient response and quasi constant frequency operation over the operation range. Selectable Forced
Continuous Conduction Mode (FCCM) or Power Saving Mode (PSM) enables the flexibility for low noise operation
or high efficiency conversion over wide output current range.
3. Lossless current sensing by RDS(ON) of lower switch achieves programmable over current protection. Other
features include internal soft start, integrated bootstrap diode and thermal shutdown. The uP6128A is available in
WQFN3x3 -16L and WQFN4x4-16L packages.
4. The uP6128B is available in VQFN3.5x3.5- 14L and TSSOP- 14L packages.
產品應用 1. Power Supplies for Microprocessors or Subsystem Power Supplies
2. Cable Modems, Set Top Boxes, and DSL Modems
3. Industrial Power Supplies; General Purpose Supplies
4. 2V to 26V Input DC-DC Regulators
5. Low-Voltage Distributed Power Supplies