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MAX8930
WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI
Negative Charge Pump Delivers High Efficiency, OLED Boost and LDO Save Space, and ALC, CAI, and I²C Add Flexibility
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Status
Active: In Production.
Description
The MAX8930 integrates a charge pump for white LED display backlighting with ambient light control (ALC) feature. The high-efficiency, adaptive-mode 1x/-0.5x charge pump drives up to 11 LEDs (8 WLEDs + RGB LED) with constant current for uniform brightness. The LED current is adjustable from 0.1mA to 25.6mA in 256 linear steps through I²C. High accuracy and LED-to-LED current matching are maintained throughout the adjustment range. The MAX8930 includes soft-start, thermal shutdown, open-circuit, and short-circuit protection.
Three 200mA LDOs are provided with programmable output voltages to provide power to external circuitry. These three LDOs can also be configured for a GPO
function through the I²C. A step-up converter is also available on the MAX8930 for biasing a PMOLED subpanel.
The MAX8930 is available in the 49-bump, 3.17mm x 3.17mm WLP package.
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Data Sheet
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Key Features
- White LED Charge Pump
- Adaptive 1x or -0.5x Negative Modes
- 11 Low-Dropout LED Current Sinks with 25.6mA to 0.1mA in 256 Dimming Steps
- Ramp-Up/Down Control for Main White LED
- Ramp-Up/Down Control for RGB LED
- Individual Brightness Control for Each White, RGB LED
- Low 240µA (typ) Quiescent Current
- Ambient Light Control (ALC) for Any Types of Light Sensor
- Content Adaptive Interface
- I²C-Compatible Control Interface
- Three Programmable LDOs Up to 200mA
- Step-Up DC/DC Converter with Programmable Output for PMOLED Application
- Low 0.1µA Shutdown Current
- 2.7V to 5.5V Supply Voltage Range
- Thermal Shutdown
- Open and Short-Circuit Protection
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Applications/Uses
- Cell Phones and Smartphones
- PDAs, Digital Cameras, Camcorders, and Other Portable Equipment
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Key Specifications:
| White LED Drivers |
| Part Number |
Topology |
LEDs |
Config. |
Dimming Control |
VDROPOUT
(mV) |
POUT
(W) |
ILED
(mA) |
VIN
(V) |
VIN
(V) |
ICC
(mA) |
VOUT
(V) |
Oper. Freq.
(kHz) |
Package/Pins |
Budgetary Price |
| max num. of |
typ |
max |
min |
max |
max |
max |
See Notes |
| MAX8930 |
| Charge Pump | | Linear Current Regulator |
|
12 |
Parallel |
I2C Serial |
62 |
1.1 |
25 |
2.7 |
5.5 |
0.4 |
5 |
4000 |
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$3.71 @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
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX8930EVKIT+
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Active |
KIT;
Land Pattern: Not Available
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See data sheet
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| MAX8930EWJ+T
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Active |
WLP;49 pin;WLP;
Outline Drawing:21-0443 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: W493B3+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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More Information
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Information Index
Document Ref.: 19-4921
Rev 0;
2010-05-18
This page last modified: 2010-08-10
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