MAX1874ETE+ by Analog Devices

Dual-Input, USB/AC Adapter, 1-Cell Li+ Charger with OVP and Thermal Regulation


The MAX1874 charges a single-cell Li+ battery from both USB and AC adapter sources. It also includes battery-to-input power switchover, so the system can be powered directly from the power source rather than from the battery. In its simplest application, the MAX1874 needs no external MOSFET or diodes, and accepts input voltages up to 6.5V; however, DC input overvoltage protection up to 18V can be added with a single SOT PFET. On-chip thermal limiting simplifies printed circuit board (PCB) layout and allows optimum charging rate without the thermal limits imposed by worst-case battery and input voltage. When the MAX1874 thermal limit is reached, the charger does not shut down but simply reduces charging current. Ambient or battery temperature can be monitored with an external thermistor. When the temperature is out of range, charging pauses. Other features include an active-low CHG output to indicate when battery current tapers below a predetermined level. DC power-OK (active-low DCOK), USB power-OK (active-low UOK), and power-on (PON) outputs indicate when valid power is present. These outputs drive logic or power-selection MOSFETs to disconnect the charging sources from the load and to protect the MAX1874 from overvoltage. The MAX1874 contains no logic for communication with the USB host. It must receive instructions from a local microcontroller. The MAX1874 is available in a 16-pin 5mm x 5mm thin QFN package and operates over the -40°C to +85°C temperature range.

Where to Buy

Prices starting from US$2.18

Distributor Stock
Logo for Farnell
Farnell
from US$2.18
No stock
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Logo for Analog Devices
Analog Devices
from US$2.50
796
in stock
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Logo for element14
element14
from US$3.30
-
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Logo for Newark Electronics
Newark Electronics
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Features

Charge from USB or AC Adapter
Automatic Switchover to AC Adapter
Thermal Limiting Simplifies Board Design
Small, High-Power 16-Pin Thin QFN Package
Input Protection Up to 18V
Soft-Start
Automatic Battery-to-Input Load Switch

Specifications

Charging VIN (V) (max) 6.5
Max. ICHG (A) 1
Cell Chemistry Li-IonLi-Polymer
# Lithium Ion Cells 1
Protected VIN (V) (max) 18
Charger (V) 4.2
Oper. Temp. (°C) -40 to +85
Package/Pins TQFN/16
BudgetaryPrice (See Notes) 2.12


MAX1874ETE+ Semiconductors - ICs by Analog Devices

BATTERY CHARGER LI-ION TQFN-16

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

Specifications

Battery Type Li-Ion
Input Voltage 18V
Battery Charge Voltage 6.5V
Charge Current Max 1A
Battery IC Case Style TQFN
No. of Pins 16Pins
No. of Series Cells 1
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

Dual-Input, USB/AC Adapter, 1- | Analog Devices
IC, BATT CHARGER, LI-ION, 16TQFN | Farnell
Battery Charger, Li-Ion, Tqfn-16 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX1874ETE+ ?

Additional datasheets, footprints and schematics for MAX1874ETE+ are listed on our Part Details page. You can also find images and similar parts to MAX1874ETE+ on this page.

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Is the MAX1874ETE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX1874ETE+ have stock available?

Authorised distributors including Analog Devices, element14, Farnell and Newark Electronics have stock available or on a lead time for MAX1874ETE+ .

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