Table of Contents
1. Overview
The smart watch is a typical example of a wearable device. The smart watch, which is evolving day by day, has become a gateway to a new lifestyle; it senses what its wearer does and its surroundings at all times, and can fulfill a variety of functions when combined with a smart phone or other devices. In their pursuit of ever higher performance in the evolution of the smart watch, engineers face two unavoidable hurdles: the extension of battery life and the need for more compact devices.
Building on 70 years of watch manufacture technology, ABLIC can deliver an IC that resolves these issues. To extend battery life, we offer the ideal combination of a battery protection IC providing a power-saving feature to reduce product battery power in storage, together with a Linear Regulator and switching regulator that are amongst the world's top class in low operating current consumption.
Our Linear Regulators and switching regulators, which eliminate the need for a divider resistor for battery monitoring, and our lineup of WLP packages and 0.8mm square compact resin packages, will lead to more compact smart watches. Enhancement of smart watch performance is supported by our power-supply ICs, high-accuracy temperature sensors in compact packages, and ultra-compact wireless power receiver control ICs with minimum number of parts.
2. Block Circuit
Click the product name for more product information.
ICs ideal for Smart Watches and Smart Bands
| Category | Product | Name of recommended product | Applications and Features |
|---|---|---|---|
| Smart watch | Battery protection IC | S-821A/1B↓ | Nch high-side protection Overcharge, overdischarge, overcurrent protection, Overheat protection |
| Smart watch | Battery protection IC | S-82B1B↓ | Overcharge, overdischarge, overcurrent protection, power-saving function |
| Smart watch | Battery protection IC | S-8240A | Overcharge, overdischarge, overcurrent protection |
| Smart watch | Linear Regulator(LDO Regulator) | S-1318↓ | Sensor power supply, ultra-low current consumption |
| Smart watch | Linear Regulator(LDO Regulator) | S-1313 | Sensor power supply, ultra-compact package (0.8mm square) |
| Smart watch | Linear Regulator(LDO Regulator) | S-1740/1741 Series↓ | Microcontroller power supply with supply voltage divided output |
| Smart watch | Voltage Detector(Reset IC) | S-1009 | Microcontroller reset, super-low current consumption |
| Smart watch/charger | DC-DC converter | S-85S1P Series↓ | BLE/GPS chip power supply with supply voltage divided output |
| Smart watch/charger | DC-DC converter | S-85SxA/P,S-85MSeries↓ | BLE/GPS chip power supply |
| Smart watch | Operational amplifier | S-89713 | Signal amplifier, Rail-to-Rail input/output, low offset |
| Smart watch | Digital temperature sensor | S-5852 | For brightness control of LCD panels, high accuracy |
| Smart watch | Temperature sensor | S-58LM20A | For pulse-wave sensor, high accuracy |
| Smart watch/charger | Wireless power IC | S-847x Series | For charging, compact package |
Features
Battery Protection IC S-821A/1B
Nch high-side protection
The S-821A/1B Series is an IC that can provide Nch high-side protection, which is necessary for short-circuit protection in metal-cased batteries.
By placing the Nch MOSFETs, which control charging and discharging, on the positive side (high-side) of the lithium battery, the ground levels of the battery pack and system can reach the same voltage, contributing to a simplified system design.
Buy Online
Buy Online
Battery Protection IC S-82B1B
Power-saving function
Power-saving (PS) function, which prevents complete depletion of the battery pack during storage!
A low current consumption mode (50nA max.) can be engaged by inputting an external signal to the PS pin. Thanks to this mode, discharge current of the battery pack and current consumption of the protection circuit can be virtually eliminated during shipping of the battery pack.
Buy Online
Linear Regulator S-1740/1741 and Switching Regulator S-85S1P
With a supply voltage divided output
small footprint
Simple battery monitoring! IC with a “supply voltage divided output”!
The supply voltage divided output of this IC separates input voltage (VIN) and outputs it to VIN/2 or VIN/3. This function can connect the supply voltage divided output from the IC directly to the A/D converter of the low-voltage microcontroller, allowing the microcontroller to monitor the battery voltage without a divider resistor. For more information, refer to “Supply voltage divided output.”
Small footprint
The compact package of this supply voltage divided output IC facilitates its smaller footprint.
Buy Online
Buy Online
Buy Online
Linear Regulator S-1318 Series
Ultra-low current consumption
This regulator features an operating current of 95nA typ., for ultra-low power consumption to significantly extend battery life.
Buy Online
Switching Regulators S-85SxA/P Series・S-85M Series
Super-low current consumption
High efficiency
WLP package
This synchronous step-down switching regulator (DC-DC converter) has a track record for use as reference design for GPS and Bluetooth chips.
The industry's top class super-low current consumption
Super-low current consumption of 260nA typ. makes it ideal for reducing battery power consumption in standby mode.
Ultra-high efficiency at low load
An efficiency of 90.5% at 100μA load provides robust support for long extended battery operation.
WLP package (S-85M Series)
The industry's smallest WLP package reduces product footprint to a mere 1.6 x 2.7 x 4.3mm2 including external components.
*When recommended products are used
Buy Online
Buy Online
Buy Online
Buy Online
The latest information
