Product Info

VTech proprietary and confidential
VTech Communications LTD.
R&D Department
The document is VTech’s proprietary information, Please do not disclose to third party without VTech’s consent
Ref. No.: 20191009 Version: 01 Date: 09 Oct, 2019 Page 2 of 33
■ 2 high-efficiency switch-mode regulators
with 1.8 V and 1.35 V outputs direct
from battery supply
■ 3.3 V linear regulator for USB supply
■ Low-voltage linear regulator for internal
digital circuits
■ Low-voltage linear regulator for
internal analog circuits
■ Power-on-reset detects low supply voltage
■ Power management for ultralow
power mode
Bluetooth features:
■ Bluetooth v5.0 specification support
■ A2DP v1.3.1
■ AVRCP v1.6
■ HFP v1.7
■ QTIL's proximity pairing and
QTIL's proximity connection
Battery charger:
■ Lithium ion / Lithium polymer battery charger
■ Charger supports 4.20 V and 4.35 V cells
■ Instant-on function automatically selects the power
supply between battery and USB, which enables
operation even if the battery is fully discharged
■ Fast charging support
□ Up to 200 mA with no external components
□ Up to 500 mA with external pass transistor
■ Supports USB charger detection
■ Support for thermistor protection of battery pack
Audio features:
■ SBC, and AAC audio codecs
■ Configurable Signal Detection to trigger events
■ 1 bank of up to 10-stage Speaker Parametric EQ
■ 6 banks of up to 5-stage User Parametric EQ for
music enhancement
■ Qualcomm®meloD™ Expansion audio processing:
3D stereo widening
■ Compander to compress or expand the dynamic
range of the audio
■ Post Mastering to improve DAC fidelity
■ Dual I²S outputs with crossover