MAX8819, MAX8819A, MAX8819B, MAX8819C:PMIC with Integrated Charger and Smart Power Selector™ in a 4mm x 4mm TQFN

A Complete Power Solution for Handheld Applications Includes a Battery Charger, Three Step-Down Converters, and WLED Power

The MAX8819_ is a complete power solution for MP3 players and other handheld applications. The IC includes a battery charger, step-down converters, and WLED power. It features an input current-limit switch to power the IC from an AC-to-DC adapter or USB port, a 1-cell lithium ion (Li+) or lithium polymer (Li-Poly) charger, three step-down converters, and a step-up converter with serial step dimming for powering two to six white LEDs. All power switches for charging and switching the system load between battery and external power are included on-chip. No external MOSFETs are required. The MAX8819C offers a sequenced power-up/power-down of OUT1, OUT2, and then OUT3. Maxim's Smart Power Selector makes the best use of AC-to-DC adapter power or limited USB power. Battery charge current and input current limit are independently set. Input power not used by the system charges the battery. Charge current is resistor programmable and the input current limit can be selected as 100mA, 500mA, or 1A. Automatic input selection switches the system load from battery to external power. In addition, on-chip thermal limiting reduces the battery charge rate to prevent charger overheating.

Key Features
  • Smart Power Selector
  • Operates with No Battery Present
  • USB/AC Adapter One-Cell Li+ Charger
  • Three 2MHz Step-Down Converters
    • 95% Peak Efficiency
    • 100% Duty Cycle
    • ±3% Output Accuracy over Load/Line/Temperature
  • 2 to 6 Series WLED Driver with Dimming Control
  • Active-Low REG1 Reset Output
  • Short-Circuit/Thermal-Overload/Input Undervoltage/Overvoltage Protection
  • Power-Up/Down Sequencing (MAX8819C)
  • Total Solution Size: Less Than 90mm²
Complete Power Solution for Handheld Applications Includes a Battery Charger, Three Step-Down Converters, and WLED Power | Typical Operating Circuit
 Complete Power Solution for Handheld Applications Includes a Battery Charger, Three Step-Down Converters, and WLED Power | Typical Operating Circuit
  • Cellular Telephones
  • Digital Cameras
  • Handheld Instrumentation
  • Low-Power Handheld Products
  • MP3 Players
  • PDAs
  • Portable GPS Devices
titleDownload file
MAX8819-MAX8819C Data SheetMAX8819-MAX8819C.pdf
Part NumberBattery InputRegulation TopologyMax. No. of LEDsLED ChannelsLED ConfigurationILED per Channel
Dimming RatioDimming ControlVCURR_SENSE
LED String Volt.
Oper. Freq.
maxmaxminmaxmaxmaxSee Notes
MAX88191-Cell Li+Inductor Based61Series0.0332Serial Pulse5000.752.65.50.95241000
TQFN/28$3.92 @1k

Part NumberPrimary TopologyMonitor/Control FeaturesDC-DC/Power FeaturesLCD/LED/Flash/CCD FeaturesBattery Charger FeaturesInterface TypeVIN
Oper. Freq.
minmaxminmaxSee Notes
MAX8819Step-DownOutput OVP
Current Limit
Fixed Freq./PWM
Internal Switch
Soft Start
Sync. Rectifier
White LEDBattery Charger
Charge Timer
Input Current Limit
Smart Pwr. Selector
Thermal Die Regulation
Thermistor Input
USB Input
TQFN/28$3.92 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • MAX8671X:PMIC with Integrated Charger and Smart Power Selector for Handheld Devices
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX8819AETI+ActiveTQFN,;28 pin;16.8 mm²-40°C to +85°CLead Free
MAX8819AETI+TActiveTQFN,;28 pin;16.8 mm²-40°C to +85°CLead Free
MAX8819BETI+ActiveTQFN,;28 pin;16.8 mm²-40°C to +85°CLead Free
MAX8819BETI+TNo Longer AvailableQFN;-40°C to +85°CSee data sheet
MAX8819CETI+ActiveTQFN,;28 pin;16.8 mm²-40°C to +85°CLead Free
MAX8819CETI+TActiveTQFN,;28 pin;16.8 mm²-40°C to +85°CLead Free
MAX8819DETI+No Longer AvailableTQFN,;28 pin;16.8 mm²-40°C to +85°CLead Free
MAX8819DETI+TNo Longer AvailableQFN;-40°C to +85°CSee data sheet
MAX8819-MAX8819C.pdf MAX8819
MAX8819-MAX8819C_cn.pdf MAX8819
External MOSFET Reduces I²R Losses in Smart Power Selector™-Based Chargers MAX8819
MAX8819B.pdf MAX8819
MAX8819C.pdf MAX8819
MAX8819A.pdf MAX8819
MAX8819-MAX8819C_cn.pdf MAX8819B