Datasheet > PCA9420UK

PCA9420UK

更新时间： 2024-11-27 02:52:43

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
82页	1167K
描述
Power management IC for low-power microcontroller applications

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PCA9420UK 数据手册

PCA9420

Power management IC for low-power microcontroller

applications

Rev. 2 — 26 January 2021

Product data sheet

1 General description

The PCA9420 is a highly-integrated Power Management IC (PMIC), targeted to provide

a full power management solution for low power microcontroller applications or other

similar applications.

The device consists of a linear battery charger capable of charging up to 315 mA current.

It has an I²C programmable Constant Current (CC) and Constant Voltage (CV) values

for flexible configuration. Various built-in protection features such as input overvoltage

protection, overcurrent protection, thermal protection, etc. are also provided for safe

battery charging. It also features JEITA compliant charging.

The device also integrates two step-down (buck) DC/DC converters which have I²C

programmable output voltage. Both buck regulators have integrated high-side and low-

side switches and related control circuitry, to minimize the external component counts;

a Pulse-Frequency Modulation (PFM) approach is utilized to achieve better efficiency

under light load condition. Other protection features such as overcurrent protection,

under-voltage lockout (UVLO), etc. are also provided. By default, the input for these

regulators is powered by either VIN or VBAT, whichever is greater.

In addition, two on-chip LDO regulators are provided to power up various voltage rails in

the system.

Other features such as FM+ I²C-bus interface, chip enable, interrupt signal, etc. are also

provided.

The chip is offered in 2.09 mm x 2.09 mm, 5 x 5 bump, 0.4 mm pitch WLCSP package;

and 3 mm x 3 mm, 24-pin QFN package.

2 Features and Benefits

• Linear battery charger for charging single cell li-ion battery

– 20 V tolerance on VIN pin

– Programmable input OVP (5.5 V or 6 V)

– Programmable constant current (up to 315 mA) and pre-charge low voltage current

threshold

– Programmable constant voltage regulation

– Programmable automatic recharge voltage and termination current threshold

– Built-in protection features such as input OVP, battery SCP, thermal protection

– JEITA compliant

– Battery attached detection

– Over-temperature protection

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