Product overview
Description
PM6680 is a dual step-down controller specifically designed to provide extremely high efficiency conversion, with lossless current sensing technique. The constant on-time architecture assures fast load transient response and the embedded voltage feed-forward provides nearly constant switching frequency operation. An embedded integrator control loop compensates the DC voltage error due to the output ripple. Pulse skipping technique increases efficiency at very light load. Moreover a minimum switching frequency of 33kHz is selectable to avoid audio noise issues. The PM6680 provides a selectable switching frequency, allowing three different values of switching frequencies for the two switching sections. The output voltages OUT1 and OUT2 can be adjusted from 0.9 V to 5.5 V and from 0.9 V to 3.3 V respectively.
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All features
- Selectable pulse skipping at light loads
- Latched OVP and UVP
- 4mW maximum quiescent power
- Selectable minimum frequency (33kHz) in pulse skip mode
- Output voltage ripple compensation
- Independent power good signals
- Soft-start internally fixed at 2ms
- Negative current limit
- 6V to 28V input voltage range
- 5V always voltage available deliver 100mA peak current
- Adjustable output voltages
- Lossless current sensing using low side MOSFETs RDS(on)
- Soft output discharge
- 1.237V ±1% reference voltage available
Circuit Diagram
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STMicroelectronics - PM6680
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| PM6680TR | Active | VFQFPN 32 5x5x1.0 mm | Industrial | Ecopack2 | |
PM6680TR
Package:
VFQFPN 32 5x5x1.0 mmMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM6680TR | | | distributors No availability of distributors reported, please contact our sales office |
PM6680TR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors