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
| Complete Power Solution for Handheld Applications Includes a Battery Charger, Three Step-Down Converters, and WLED Power | Typical Operating Circuit Applications/Uses
|
DataSheet
| title | Download file |
|---|---|
| MAX8819-MAX8819C Data Sheet | MAX8819-MAX8819C.pdf |
Parametrics
| Part Number | Battery Input | Regulation Topology | Max. No. of LEDs | LED Channels | LED Configuration | ILED per Channel (A) | Dimming Ratio | Dimming Control | VCURR_SENSE (mV) | POUT (W) | VIN (V) | VIN (V) | ICC (mA) | LED String Volt. (V) | Oper. Freq. (kHz) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| max | max | min | max | max | max | See Notes | |||||||||||
| MAX8819 | 1-Cell Li+ | Inductor Based | 6 | 1 | Series | 0.03 | 32 | Serial Pulse | 500 | 0.75 | 2.6 | 5.5 | 0.95 | 24 | 1000 2000 | TQFN/28 | $3.92 @1k |
| Part Number | Primary Topology | Monitor/Control Features | DC-DC/Power Features | LCD/LED/Flash/CCD Features | Battery Charger Features | Interface Type | VIN (V) | VIN (V) | VOUT (V) | VOUT (V) | Max. IOUT (A) | Max. IOUT (A) | Oper. Freq. (kHz) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | See Notes | |||||||||||
| MAX8819 | Step-Down | Output OVP Shutdown | Current Limit Fixed Freq./PWM Internal Switch Soft Start Sync. Rectifier | White LED | Battery Charger Charge Timer Input Current Limit Smart Pwr. Selector Thermal Die Regulation Thermistor Input USB Input | GPIO | 4.1 | 5.5 | 1 | 24 | 0.5 | 0.5 | 1000 2000 | 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 Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX8819AETI+ | Active | TQFN,;28 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX8819AETI+T | Active | TQFN,;28 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX8819BETI+ | Active | TQFN,;28 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX8819BETI+T | No Longer Available | QFN; | -40°C to +85°C | See data sheet | |
| MAX8819CETI+ | Active | TQFN,;28 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX8819CETI+T | Active | TQFN,;28 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX8819DETI+ | No Longer Available | TQFN,;28 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX8819DETI+T | No Longer Available | QFN; | -40°C to +85°C | See 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
