Low voltage 4-channel constant current LED driver with charge pump

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  • The STP4CMP is a charge-pump-based 4-channel LED driver designed for RGB illumination or LCD display backlighting. The STP4CMP works off a battery with an input voltage between 2.7 V and 5.5 V. The device generates regulated current sinks with high absolute and channel-to-channel accuracy to drive up to 4 LEDs. It can support LEDs with forward voltage as high as 3.8 V. The current sink for each channel can be set with 4 individual external resistors. Each channel is controlled independently. The PWM control can be applied directly to the 4 EN (enable) pins to provide brightness control. When enabled, the charge pump, which uses a small ceramic bucket capacitor between C1P and C1N, operates to regulate the VOUT with a clamping voltage at typ. 5 V. The tiny QFN20 (1.8x3.2 mm) package allows the device to be also used for applications with space limitations.

    Key Features

    • Operating voltage range: VCC 2.7 V to 5.5 V
    • Full RGB function support
    • 4-channel LED driver with individual ON/OFF control directly from input pins
    • Individually programmable output current for the 4 channels through 4 external resistors with a max. capability of 30 mA
    • Absolute output current accuracy of max. ±7% and channel-to-channel mismatch of max. ±4%
    • Selectable charge pump enable/disable
    • Thermal protection
    • Small QFN20 (1.8x3.2 mm) package

Circuit Diagram

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Part Number
Marketing Status
Quantity
Budgetary Price (US$)*
Package
Packing Type
Temperature (°C) ECCN (US)
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min
max
STP4CMPQTR
Active
10000 1.035 VFQFPN 20 3.2x1.8x0.5 Tape And Reel -40 85 EAR99
MORE INFO

Country of Origin:

THAILAND

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Distributor availability ofSTP4CMPQTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2000 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

DIGIKEY

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-13

Get sample

STP4CMPQTR

Marketing Status

Active

Quantity

10000

Unit Price (US$)

1.035*

Distributor availability ofSTP4CMPQTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2000 1 Order Now

Distributor reported inventory date: 2019-09-13

Distributor Name

DIGIKEY

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-13

Unit Price (US$)

1.035

Package

VFQFPN 20 3.2x1.8x0.5

Packing Type

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

85

ECCN (US)

EAR99

Country of Origin

THAILAND

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Related Applications

Home, Building and City Automation

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Evaluation Tools

    • Part Number

      4-channel LED driver with charge pump based on the STP4CMP

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS6299
      Low voltage 4-channel constant current LED driver with charge pump
      3.0
      1.15 MB
      PDF
      DS6299

      Low voltage 4-channel constant current LED driver with charge pump

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STP4CMPQTR
Active
VFQFPN 20 3.2x1.8x0.5 Industrial Ecopack2

STP4CMPQTR

Package:

VFQFPN 20 3.2x1.8x0.5

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 20 3.2x1.8x0.5

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.