Datasheet > RAJ240057DNP

RAJ240057DNP

更新时间： 2024-03-03 10:09:46

品牌	Logo	应用领域
瑞萨 - RENESAS		电池仪表
页数	文件大小	规格书
76页	2150K
描述
2 to 4 Series Li-ion Battery Fuel Gauge IC

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数据手册

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RAJ240057DNP 数据手册

RAJ240055 / RAJ240057

CHAPTER 2 OUTLINE

(2/2)

Item

Description

Sigma-delta A/D converter

15-bit resolution (sigma-delta method)

• Battery Cell voltage (Cell 1 to Cell 4)

• Battery Cell total voltage (VBAT pin)

• VIN12 pin input voltage

• Thermistor sensor port with on-chip pull-up 10 KΩ resistor: 3 channels (AN0, AN1 and AN2)

• Analog pin input voltage: 1 channel (AN3)

• On-chip simple temperature sensor (temperature range: -40 to 85°C)

• Internal reference and supply voltage (AFE)

Current integrating circuit

1 channel:18-bit resolution

1 channel:15-bit resolution

Current integrating circuit

for impedance measurement

Overcurrent detection circuit and

wake up current detection circuit

• Discharge short-circuit current detection: 2 channels

• Discharge overcurrent detection

• Charge overcurrent detection

• Wake up current detection (discharge and charge)

Simple temperature sensor

1 channel

Charge/Discharge High-side

FET control circuit

N-ch MOSFET driver for charge control

N-ch MOSFET driver for discharge control

Programmable MOSFET control by PWM

Power on circuit

Series regulator

Return from power down mode by detecting high voltage input to VIN12 pin

VREG2: power supply for MCU (2.0 V or 3.3 V)

Reset circuit

Series regulator output monitoring (VREG2)

Support 4 series cells (On-resistor: 200 Ω MAX)

20 bits×1(2 / 4 / 8 / 16 / 32 / 64 [s] to be selected)

4.194 MHz (TYP)

Cell balancing circuit

MCU runaway detection circuit

AFE On-chip oscillator

AFE low speed On-chip oscillator

AFE timer

131.072 kHz (TYP)

2 channels

• AFE timer A (setting range：125 ms to 64 s)

• AFE timer B (setting range：61 us to 2 s)

MCU-AFE communication interface(C2C) AFE to MCU communication (Chip to Chip Interface)

Power supply voltage

Operation ambient temperature

Package

VCC = 2.2 to 25.0 V

-40 to 85°C

32 pin plastic mold QFN([Body] 4.0mm x 4.0mm, 0.4 mm pitch)

R01DS0399EJ0100 Rev.1.00

Dec. 29, 2022

Page 3 of 74

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