Multi-Cell Synchronous Buck-Boost Battery Charger Controller with NVDC Power Path Management
- Parameters
- Features
- Description
Part Number | SY20779CQFQ |
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Description | Multi-cell Buck-Boost Battery Charger |
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Vin_min (V) | 3.5 |
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Vin_max (V) | 25 |
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Vo_min (V) | |
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Max. Charge Current (A) | 8.128 |
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Iq (uA) | |
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Fsw (MHz) | 0.8,1.2 |
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Cell Voltage | 1.024V – 19.2V |
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Series Cells | 1~4 cells |
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Features / Special Function | Prog. CV, CC, VSYSMIN, VDPM, IDPM, OTGCV, OTGCC by SMBus, Power/Current Monitor, PROCHOT, PTM, VAP |
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Package | QFN4x4-32 |
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- 3.5V to 25V Input Operating Voltage
- Charge 1s to 4s Battery from Wide Range of Input Source
- Drive Bi-Direction 4-switch Buck-Boost with Single Inductor
- 800kHz or 1.2MHz Programmable Switching Frequency
- SMBus Controls
-- Battery Charge Voltage (1.024V - 19.2V)
-- Minimum System Voltage (1.024V - 16.128V)
-- OTG Output Voltage (3V - 20.8V)
-- Battery Charge Current (64mA - 8.128A)
-- Input Voltage Limit for DPM (3.2V - 19.52V)
-- Input Current Limit for DPM (50mA - 6.4A)
-- OTG Output Current Limit (50mA - 6.35A)
- High Accuracy for Voltage/Current Regulation
- Accurate Power/Current Monitor and Comprehensive PROCHOT for CPU Throttling
- ILIM_HIZ Pin to Set Input Current Limit
- NVDC Power Path Management
-- Battery Supplements System when Adapter is Fully-Loaded
-- Battery MOSFET (BATFET) Ideal Diode Operation in Supplement Mode
- Pass Through Mode (PTM) for System Power Efficiency Improvement
- When System is Powered by Battery Only, Vmin Active Protection (VAP) Mode Supplements System from Input Capacitors during System Peak Power Spike
- Support Battery LEARN Function
- Adaptive Input Current Limit (AICL) to Extract Max Input Power
- Host Control Interface for Flexible System Configuration
- Integrated ADC to Monitor Voltage, Current and Power
- Thermal Shutdown Protection
- Input, System, Battery Overvoltage Protection
- Input, MOSFET, Inductor Overcurrent Protection
- Compact Package: QFN4x4-32
Evaluation Board
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Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
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The evaluation board EVB_SY20779CQFQ is used to evaluate Multi-Cell Synchronous Buck-Boost Battery Charger Controller SY20779CQFQ.
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