PCA9420 IC Datasheet

PCA9420 Datasheet PDF, Equivalent


Part Number

PCA9420

Description

Power management IC

Manufacture

NXP

Total Page 30 Pages
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PCA9420
PCA9420
Power management IC for low-power microcontroller
applications
Rev. 1.1 — 24 October 2019
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 315mA 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 2.09mm x 2.09mm, 5 x 5 bump, 0.4mm pitch WLCSP package; and
3mm x 3mm, 24-pin QFN package.
2 Features and Benefits
Linear battery charger for charging single cell li-ion battery
20V tolerance on VIN pin
Programmable input OVP (5.5V or 6V)
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
Two step-down DC/DC converters
Very low quiescent current
Programmable output voltage

PCA9420
NXP Semiconductors
PCA9420
Power management IC for low-power microcontroller applications
SW1: core buck converter, 0.5V~1.5V output, 25mV/step, and a fixed 1.8V, up to
250mA
SW2: system buck converter, 1.5V~2.1V/2.7V~3.3V output, 25mV/step, up to 500mA
Low power mode for extra power saving
Two LDOs
Programmable output voltage regulation
LDO1: always-on LDO, 1.70V~1.90V output, 25mV/step, up to 1mA
LDO2: system LDO, 1.5V~2.1V/2.7V~3.3V output, 25mV/step, up to 250mA
1 MHz I2C-bus slave interface
-40°C ~ +85°C ambient temperature range
Offered in 5 x 5 bump-array WLCSP and 24-pin QFN package
3 Applications
Low power microcontroller application
4 Ordering information
Table 1. Ordering information
Type number Topside Package
marking Name
PCA9420BS 420
HVQFN24
PCA9420UK 9420
WLCSP25
Description
Version
plastic thermal enhanced very thin quad flat package; no SOT905-1
leads; 24 terminals; body 3 x 3 x 0.85 mm
wafer level chip-scale package; 25 bumps; 0.4 mm pitch, SOT1397-7
2.09 mm x 2.09 mm x 0.525 mm body
4.1 Ordering options
Table 2. Ordering options
Type number Orderable part Package
number
PCA9420BS PCA9420BSAZ HVQFN24
PCA9420UK PCA9420UKZ WLCSP25
Packing method
REEL 7" Q2 NDP
REEL 7" Q1 DP CHIPS
Minimum order
quantity
1400
3000
Temperature range
-40°C to +85°C
-40°C to +85°C
PCA9420
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1.1 — 24 October 2019
© NXP B.V. 2019. All rights reserved.
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Features PCA9420 Power management IC for low-pow er microcontroller applications Rev. 1.1 — 24 October 2019 Product data s heet 1 General description The PCA9420 is a highly-integrated Power Managemen t IC (PMIC), targeted to provide a full power management solution for low powe r microcontroller applications or other similar applications. The device consi sts of a linear battery charger capable of charging up to 315mA current. It ha s an I2C programmable Constant Current (CC) and Constant Voltage (CV) values f or flexible configuration. Various buil t-in protection features such as input overvoltage protection, overcurrent pro tection, thermal protection, etc. are a lso provided for safe battery charging. It also features JEITA compliant charg ing. The device also integrates two ste p-down (buck) DC/DC converters which ha ve I2C programmable output voltage. Bot h buck regulators have integrated high- side and lowside switches and related c ontrol circuitry, to minimize the external component counts; a Pu.
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