Engineers can extend battery life by at least five times with the
industry’s smallest integrated, high-efficiency chargers from TI
DALLAS (June 30, 2020) – Texas Instruments
(TI) (Nasdaq: TXN) today introduced the industry’s smallest buck-boost battery
charger integrated circuits, which integrate power-path management for maximum
power density and universal and fast charging at up to 97% efficiency. The BQ25790 and BQ25792 support efficient charging and 10 times lower quiescent
current through USB Type-C™ and USB Power Delivery (PD) ports in small personal
electronics, portable medical devices and building automation applications.
Deliver ultra-fast charging in wired, wireless or on-the-go adapters
The
BQ25790 and BQ25792 offer the flexibility to charge batteries with one to four
cells in a series and up to 5 A of charging current across the full
input-voltage range (3.6 V to 24 V) for USB Type-C and USB PD applications. The
chargers’ integrated dual-input selector supports multiple power sources,
including wireless, USB, barrel jack and solar charging, while delivering fast
charging – 97% efficiency at 30 W.
Universal
charging enables portable medical devices, such as blood-pressure monitors and
low-power continuous positive airway pressure (CPAP) machines, to charge from
car adapters or USB-PD adapters, bringing a new level of flexibility and
convenience to portable medical devices. On-the-go (OTG) charging is supported
with a bi-directional operation for forward and reverse charging.
Design smaller, more powerful applications with 50% greater power
density
The
chargers deliver 155 mW/mm2 (100 W/in2) of power –
up to two times more than competitive devices. Helping engineers reduce
solution size and bill of materials (BOM), the new buck-boost chargers are the
industry’s first to fully integrate the following components: switching
metal-oxide semiconductor field-effect transistors (MOSFETs), a battery FET,
current-sensing circuits and a dual-input selector. The reduction in component
count is particularly valuable for applications such as smart speakers, which
are shrinking in size and cost as market adoption increases.
Maximize battery run time with ultra-low power consumption
The
BQ25790 and BQ25792 are the industry’s first multicell buck-boost battery
chargers with less than 1 µA of quiescent current, delivering at least five
times longer shelf life than competitive devices through a dual ship mode and
shutdown function that delivers up to 10 times lower quiescent current. Combined
with an extremely low battery FET resistance of 8 mΩ, engineers can further maximize battery run time
for applications that require long periods of operation.
For
example, video doorbell applications that typically rely on an A/C power supply
can operate without interruption when the primary source of power switches to
the battery pack. By helping reduce power consumption and power loss through
heat dissipation, TI’s chargers enable video doorbells to run longer on battery
power.
Package, availability and pricing
The BQ25790 is now available from TI
and authorized distributors in 2.9-mm-by-3.3-mm, 56-pin wafer chip scale
package (WCSP). The BQ25792 is
now available from TI and authorized distributors in a 4-mm-by-4-mm, 29-pin
quad flat no-lead (QFN) package. Full and custom-quantity reels are available
on TI.com and through other channels. Pricing starts at US$2.29 and US$2.29 in
1,000-unit quantities, respectively.The BQ25790EVM evaluation module is available on TI.com for
US$149.
Multiple payment and shipping options are available
on TI.com.