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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
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Status
| Part Number |
Status |
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MAX8819
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This product is No Longer Available. |
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MAX8819A
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Active: In Production. |
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MAX8819B
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Active: In Production. |
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MAX8819C
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Active: In Production. |
Description
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.
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Data Sheet
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An evaluation kit is available: MAX8819AEVKIT
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
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Applications/Uses
- Cellular Telephones
- Digital Cameras
- Handheld Instrumentation
- Low-Power Handheld Products
- MP3 Players
- PDAs
- Portable GPS Devices
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Key Specifications:
| Battery Chargers |
| Part Number |
Cell Chemistry |
Lithium Ion Cells |
Protected VIN
(V) |
Charging VIN
(V) |
Charge Rate Set by |
Max. ICHG
(A) |
Charge Termination |
Charge Regulation |
EV Kit |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| max |
max |
≥ |
max w/pins |
See Notes |
| MAX8819 |
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1 |
5.5 |
5.5 |
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1 |
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Linear |
Yes |
-40 to +85 |
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16.8 |
$3.92 @1k |
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See All Battery Chargers (68)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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| Multifunction PMICs |
| 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 |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| min |
max |
min |
max |
≥ |
≤ |
max w/pins |
See Notes |
| MAX8819 |
Step-Down |
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| Current Limit | | Fixed Freq./PWM | | Internal Pwr. FETs | | Soft Start | | Sync. Rectifier |
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White LED |
| Battery Charger | | Charge Timer | | Input Current Limit | | Smart Pwr. Selector | | Thermal Die Regulation | | Thermistor Input | | USB Input |
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GPIO |
4.1 |
5.5 |
1 |
24 |
0.5 |
0.5 |
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16.8 |
$3.92 @1k |
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See All Multifunction PMICs (96)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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| White LED Drivers |
| Part Number |
Topology |
LEDs |
Config. |
Dimming Control |
VCURR_SENSE
(mV) |
POUT
(W) |
ILED
(mA) |
VIN
(V) |
VIN
(V) |
ICC
(mA) |
VOUT
(V) |
Oper. Freq.
(kHz) |
Package/Pins |
Budgetary Price |
| max num. of |
max |
min |
max |
max |
max |
See Notes |
| MAX8819 |
Inductor Based |
6 |
Series |
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500 |
0.75 |
30 |
2.6 |
5.5 |
0.95 |
24 |
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$3.92 @1k |
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See All White LED Drivers (47)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-4166
Rev 1;
2009-05-11
This page last modified: 2010-06-04
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