Battery Charger Li-Ion/Li-Pol 1000mA 4.2V 16-Pin TQFN EP T/R, MAX1874ETE+T, Maxim Integrated

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.

  • 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

Характеристики

Supplier_package

TQFN EP

Specifications

https://4donline.ihs.com/images/VipMasterIC/IC/MAXM/MAXMS06293/MAXMS06293-1.pdf?hkey=52A5661711E402568146F3353EA87419

Screening_level

Extended

Schedule_b

8542390000

Product_dimensions

4 x 4 x 0.73 mm

Pin_count

16

Output_voltage

4.2 V

Output_current

1 A

Operating_temperature

-40 to 85 °C

Бренд

Msl_level

1

Mounting

Surface Mount

Max_processing_temp

260, 300

Lead_finish

Matte Tin

Htsn

8542390001

Eccn

EAR99

Артикул: MAX1874ETE+T

Описание

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.

  • 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

Детали

Supplier_package

TQFN EP

Specifications

https://4donline.ihs.com/images/VipMasterIC/IC/MAXM/MAXMS06293/MAXMS06293-1.pdf?hkey=52A5661711E402568146F3353EA87419

Screening_level

Extended

Schedule_b

8542390000

Product_dimensions

4 x 4 x 0.73 mm

Pin_count

16

Output_voltage

4.2 V

Output_current

1 A

Operating_temperature

-40 to 85 °C

Бренд

Msl_level

1

Mounting

Surface Mount

Max_processing_temp

260, 300

Lead_finish

Matte Tin

Htsn

8542390001

Eccn

EAR99