LTC4126-ADJ

24

Rev. 0

For more information www.analog.com



ANALOG DEVICES, INC. 2020

09/20

www.analog.com

RELATED PARTS

TYPICAL APPLICATION

47nF

2.2F

2.2µF

1.2V

ACIN

OUT

GND

Li-Ion

4.2V

LTC4126-ADJ

BAT

EN

CHRG

+

ACPR

STAT2

DIGITAL I/O

STAT1

NTC

PROG

PUSHBUTTON

ADM8642

TRICKLE CHARGE

WHEN BATTERY

IS BELOW 2.8V

GND

OUT

PBEN

4126-ADJ TA03

100k

D

13µH

NTC RESISTOR

THERMALLY

COUPLED

WITH BATTERY

R1

243k

C1

4.7µF

5V

C2

100µF

6.8µH

GND

OUT

47nF

10nF

M1

Si2312CDS

SET

OE

DIV

LTC6990

AIR GAP

(4mm TO 6mm)

M1: VISHAY Si2312CDS-T1-GE3

D1: ROHM SEMICONDUCTOR SML-311UTT86

30.1k

1k

8.87k

6.34k

+

–

DIS

Wireless 10mA Li-Ion Battery Charger (4.2V) Tuned at 204kHz with Pushbutton Enabling and C/10 Trickle Charging Function

PART NUMBER DESCRIPTION

COMMENTS

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Receiver Load, Foreign Object Detection, Wide Operating Switching Frequency Range:

50kHz to 250kHz, Input Voltage Range 3V to 5.5V, 20-Lead 4mm × 5mm QFN Package

LTC4126/

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7.5mA/10mA Wireless Li-Ion Charger with

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Wireless Single Li-Ion Charger, Integrated Rectifier with Overvoltage Limit, 7.5mA/10mA

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4.2V), 12-Lead 2mm × 2mm QFN Package

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TimerBlox: Voltage Controlled Silicon Oscillator Fixed-Frequency or Voltage-Controlled Operation, Frequency Range of 488Hz to 2MHz,

Low-Profile SOT-23 and 2mm × 3mm DFN Packages

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TimerBlox: Voltage Controlled Pulse-Width

Modulator (PWM)

Pulse Width Modulation by 0V to 1V Analog Input, Frequency Range of 3.81Hz to 1MHz,

Low-Profile SOT-23 and 2mm × 3mm DFN Packages