SY6970QCC
Synchronous Buck ChargerThe SY6970QCC is a synchronous buck charger from Silergy Corp.. View the full SY6970QCC datasheet below including pinout, electrical characteristics, absolute maximum ratings.
Manufacturer
Silergy Corp.
Category
Synchronous Buck Charger
Package
QFN4x4-24
Overview
Part: SY6970QCC — Silergy Corp.
Type: Fully-integrated switching battery charger with system power path management
Description: 5A, single-cell Li-Ion/Li-polymer switching battery charger with I2C control, USB detection, OTG, and power path management, supporting 3.9V-14V input and up to 2.4A OTG current.
Operating Conditions:
- Supply voltage: 3.9V–14V
- Operating temperature: -40°C to +100°C
- Junction temperature: -40°C to 125°C
- Charge voltage: 3.84–4.608V
Absolute Maximum Ratings:
- Max supply voltage (BUS, PMID, LX): +18V
- Max continuous current (BATFET Discharge): 9A
- Max junction temperature: +150°C
- Max storage temperature: -65°C to +150°C
Key Specs:
- BUS Operating Range: 3.9V to 14V
- Input Current Limit Range: 100mA to 3250mA
- Battery Discharge Over-current Threshold: 9A
- Junction Temperature Regulation Accuracy: 120°C (TREG bits=11)
- Charge Voltage Regulation: ±0.5%
- Charge Current Regulation: ±7%
- OTG Output Regulation in Boost Mode: ±1%
- Battery Discharge Current (High-Z Mode, BATFET enabled): 32 μA (Typ, TJ=-40°C to 85°C)
Features:
- High Efficiency 5A 1.5MHz Buck Mode Charger
- Support 3.9V-14V Input Voltage Range
- Programmable IDPM/VDPM to Support the USB and Adapter
- Support USB SDP/DCP/CDP and Non-Standard Adapter Detection
- 3.84-4.608V Adjustable Charge Voltage
- Support Narrow VDC Power Path Management
- JEITA Compliance
- Maximum 2.4A 500KHz/1.5MHz Boost OTG Current
- Battery Monitor for Voltage, Temperature and Charge Current Measurements
- Full BATFET Control to Support Shipping Mode, Wake Up, and System Reset
- Up to 9A Battery Discharge Current
- Safety features: Battery Temperature Sensing, Charging Safety Timer, Thermal Regulation and Shutdown, Input/System Over-voltage Protection, MOSFET Over-current Protection
- Low Battery Leakage Current and Support Shipping Mode
- 4mm x 4mm QFN-24 Package
Applications:
- Smart Phone
- Tablet PC
- Power Bank
- Portable Internet Devices
Package:
- QFN4x4-24
Features
- High Efficiency 5A 1.5MHz Buck Mode Charger
- -Support 3.9V-14V Input Voltage Range
- -Programmable IDPM/VDPM to Support the USB and Adapter
- -Support USB SDP/DCP/CDP and NonStandard Adapter Detection
- -3.84-4.608V Adjustable Charge Voltage
- -Support Narrow VDC Power Path Management
- -JEITA Compliance
- -±0.5% Charge Voltage Regulation
- -±7% Charge Current Regulation
- -Accelerate Charge Time by Battery Path Impedance Compensation.
- -Charge Status Outputs for LED or Host Processor
- Maximum 2.4A 500KHz/1.5MHz Boost OTG Current
- -4.55-5.51V Adjustable OTG Output Voltage
- -Selectable OTG Output Current Limit
- -Up to 2.4A OTG Current Limit on BUS
- -± 1% Output Regulation in Boost Mode
- Battery Monitor for Voltage, Temperature and Charge Current Measurements
- Full BATFET Control to Support Shipping Mode, Wake Up, and System Reset
- Up to 9A Battery Discharge Current
- Safety
- -Battery Temperature Sensing for Charge and Boost Mode
- -Battery Charging Safety Timer
- -Thermal Regulation and Thermal Shutdown
- -Input/System Over-voltage Protection
- -MOSFET Over-current Protection
- Low Battery Leakage Current and Support Shipping Mode
- 4mm x 4mm QFN-24 Package
Applications
- Smart Phone
- Tablet PC
- Power Bank
- Portable Internet Devices
Pin Configuration
SY6970QCC Pinout – QFN4x4-24
| Pin Number | Pin Name | Type | Description |
|---|---|---|---|
| 1 | BUS | I/O | USB Bus Voltage Input |
| 2 | DP | I/O | USB Data Plus |
| 3 | DM | I/O | USB Data Minus |
| 4 | STAT | O | Charge Status Output |
| 5 | SCL | I/O | I²C Clock |
| 6 | SDA | I/O | I²C Data |
| 7 | IN | P | Power Supply Input |
| 8 | OTG | I/O | OTG Control |
| 9 | ICE | I/O | ICE Interface |
| 10 | LIM | I | Current Limit Input |
| 11 | NTC | I | NTC Thermistor Input |
| 12 | IMON | O | Current Monitor Output |
| 13 | BAT | P | Battery Output |
| 14 | BAT | P | Battery Output |
| 15 | SYS | O | System Output |
| 16 | SYS | O | System Output |
| 17 | PGND | P | Power Ground |
| 18 | PGND | P | Power Ground |
| 19 | LX | – | Inductor Connection |
| 20 | LX | – | Inductor Connection |
| 21 | REGN | I | Regulator Network Input |
| 22 | PHID | – | Phase Detect |
| 23 | PHID | – | Phase Detect |
| 24 | DSEL | I | Device Selection Input |
Notes
- Power pins (P): PGND (pins 17–18), BAT (pins 13–14), SYS (pins 15–16) are duplicated for current distribution.
- USB interface: BUS, DP, DM support USB charging input detection.
- I²C interface: SCL (pin 5) and SDA (pin 6) for device configuration.
- LX pins (19–20): Inductor connection for buck converter; not traditional I/O.
- PHID pins (22–23): Phase detect network; not traditional I/O.
- Pin diagram shows top view with pin 1 at top-left, numbering proceeds clockwise around the perimeter.
Electrical Characteristics
(VBUS_UVLOZ<VBUSVBAT+VSLEEP, TA=25° C for typical values unless other noted.)
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| QUIESCENT CURRENTS | QUIESCENT CURRENTS | QUIESCENT CURRENTS | QUIESCENT CURRENTS | QUIESCENT CURRENTS | QUIESCENT CURRENTS | QUIESCENT CURRENTS |
| Battery Discharge Current (BAT) | I BAT | V BUS <V BUS_UVLOZ , V BAT =4.2 V, leakage between BAT and BUS | 5 | μA | ||
| Battery Discharge Current (BAT) | High-Z Mode, no BUS, battery monitor disabled, BATFET disabled, T J <85° C | 12 | μA | |||
| Battery Discharge Current (BAT) | High-Z Mode, no BUS, battery monitor disabled, BATFT enabled, T J =-40° C to 85° C | 32 | μA | |||
| Input Supply Current in High-Z Mode | I BUS_HIZ | V BUS =5V, battery monitor disabled, no battery, High-Z mode enabled | 15 | μA | ||
| Input Supply Current in High-Z Mode | V BUS =12V, battery monitor disabled, no battery, High-Z mode enabled | 25 | μA | |||
| Input Supply Current (BUS) | I BUS | V BUS >V BUS_UVLOZ , V BUS >V BAT , converter not switching | 1.5 | 3 | mA | |
| Input Supply Current (BUS) | I BUS | V BUS >V BUS_UVLOZ , V BUS >V BAT, converter switching, V BAT =3.2V, I SYS =0A | 3 | mA | ||
| Input Supply Current (BUS) | V BUS >V BUS_UVLOZ , V BUS >V BAT , converter switching, charge disabled,V BAT =3.8V, I SYS =0A | 3 | mA | |||
| Battery Discharge Current in Boost Mode | I OTGBOOST | V BAT =4.2V, Boost mode, I BUS =0A, converter switching | 3.5 | mA | ||
| BUS/BATPOWERUP | BUS/BATPOWERUP | BUS/BATPOWERUP | BUS/BATPOWERUP | BUS/BATPOWERUP | BUS/BATPOWERUP | BUS/BATPOWERUP |
| BUS Operating Range | V BUS_OP | 3.9 | 14 | V | ||
| BUS for Active IC and I 2 C, No Battery | V BUS_UVLOZ | V BUS rising | 3.6 | V | ||
| Sleep Mode Falling Threshold | V SLEEP | V BUS falling,V BUS -V BAT | 65 | mV | ||
| Sleep Mode Rising Threshold | V SLEEPZ | V BUS rising,V BUS -V BAT | 250 | mV | ||
| BUS Over-voltage Rising Threshold | V ACOV | V BUS rising | 14.3 | V | ||
| BUS Over-voltage Recovery Threshold | V ACOV_RC | V BUS falling | 300 | mV | ||
| Battery Depletion Threshold | V BAT_DPL | V BAT falling V rising | 2.3 2.5 | V | ||
| Battery Depletion Recovery Threshold | V BAT_DPLZ | BAT | V |
© 2019 Silergy Corp. All Rights Reserved.
© 2019 Silergy Corp. All Rights Reserved.
Absolute Maximum Ratings
- Others ------------------------------------------------------------------------------------------------------------ -0.3V to +6V
- Package Thermal Resistance (Notes 2) QFN4x4-24 θ JA ----------------------------------------------------------------------------------------- 33.3° C/W QFN4x4-24 θ JC ----------------------------------------------------------------------------------------- 29.7° C/W
- Junction Temperature Range ----------------------------------------------------------------------------- -40° C to C Operating Temperature Range --------------------------------------------------------------------------- -40° C to +100°
- +150° C
- Storage Temperature -------------------------------------------------------------------------------------- -65° C to +150°
- C Lead Temperature (Soldering, 10s) -------------------------------------------------------------------------------- +300° C
- ESD Susceptibility HBM(Human Body Mode) ---------------------------------------------------------------------------------------------
- 2kV MM(Machine Mode) --------------------------------------------------------------------------------------------------- 200V
- Recommended Operating Conditions (Note 3)
- BUS, PMID, LX ------------------------------------------------------------------------------------------------- 0V to +16V Others ------------------------------------------------------------------------------------------------------------- 0V to
- +5.5V
- Junction Temperature Range ------------------------------------------------------------------------------ -40° C to 125° C
- Temperature Range ------------------------------------------------------------------------------- -40° C to 85° C
- Ambient
© 2019 Silergy Corp. All Rights Reserved.
Thermal Information
The SY6970 monitors the internal junction temperature TJ to avoid overheat the chip and limits the IC surface temperature. When the internal junction temperature exceeds the preset limit (TREG bits), the device will lower down the charge current. The wide thermal regulation range from 60° C to 120° C allows the user to optimize the system thermal performance.
During thermal regulation, the actual charging current is usually below the programmed battery charging current. Therefore, termination is disabled, the safety timer runs at half the clock rate, and the status register THERM_STAT goes high.
Additionally, the device has thermal shutdown to turn off the converter and BATFET. The fault register CHRG_FAULT is 10 and an INT is asserted to the host. The BATFET and converter are enabled to recover when the IC temperature is below TTSD_HYS.
Typical Application
© 2019 Silergy Corp. All Rights Reserved.
Ordering Information
| Ordering Number | Package type |
|---|---|
| SY6970QCC | QFN4x4-24 |
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| SY6970 | Silergy Corp. | — |
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