MAX1873TEEE+ by Analog Devices

Simple Current-Limited Switch-Mode Li+ Charger Controller

Status: Active
Series: MAX1873
RoHS: Unknown
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The low-cost MAX1873R/S/T provides all functions needed to simply and efficiently charge 2-, 3-, or 4-series lithium-ion cells at up to 4A or more. It provides a regulated charging current and voltage with less than ±0.75% total voltage error at the battery terminals. An external P-channel MOSFET operates in a step-down DC-DC configuration to efficiently charge batteries in low-cost designs. The MAX1873R/S/T regulates the battery voltage and charging current using two control loops that work together to transition smoothly between voltage and current regulation. An additional control loop limits current drawn from the input source so that AC adapter size and cost can be minimized. An analog voltage output proportional to charging current is also supplied so that an ADC or microcontroller can monitor charging current. The MAX1873 may also be used as an efficient current-limited source to charge NiCd or NiMH batteries in multichemistry charger designs. The MAX1873R/S/T is available in a space-saving 16-pin QSOP package. Use the evaluation kit (MAX1873EVKIT) to help reduce design time.

Prices starting from US$2.77


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$3.63
161
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Logo for element14 element14 US$2.96
161
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Logo for Farnell Farnell US$2.77
161
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Features

Low-Cost and Simple Circuit
Charges 2-, 3-, or 4-Series Lithium-Ion Cells
AC Adapter Input-Current-Limit Loop
Also Charges Ni-Based Batteries
Analog Output Monitors Charge Current
±0.75% Battery-Regulation Voltage
5µA Shutdown Battery Current
Input Voltage Up to 28V
200mV Dropout Voltage/100% Duty Cycle
Adjustable Charging Current
300kHz PWM Oscillator Reduces Noise
Space-Saving 16-Pin QSOP
MAX1873 Evaluation Kit Available to Speed Designs

Specifications

Charging VIN (V) (max) 28
Max. ICHG (A) 4
Cell Chemistry Li-IonLi-PolymerNiCdNiMH
# NiMH/ NiCd Cells 5678910
# Lithium Ion Cells 234
Protected VIN (V) (max) 28
Charger (V) 8 to 17.6
Oper. Temp. (°C) -40 to +85
Package/Pins QSOP/16
BudgetaryPrice (See Notes) 2.21


MAX1873TEEE+ Semiconductors - ICs by Analog Devices

BATTERY CHARGER LI-ION 4A QSOP-16

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

Battery Type Li-Ion
Input Voltage 28V
Battery Charge Voltage -
Charge Current Max 4A
Battery IC Case Style QSOP
No. of Pins 16Pins
No. of Series Cells 4
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Battery Charger, Li-Ion, 4A, Qsop-16 | Newark Electronics
BATTERY CHARGER, LI-ION, 4A, QSOP-16 | element14
MAX1873TEEE+, Batt Charge Controller ICs | RS

Frequently Asked Questions

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Is the MAX1873TEEE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Newark Electronics, element14, Farnell and RS have stock available or on a lead time for MAX1873TEEE+ .

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