MIC2860-2PYC6 TR Micrel Inc, MIC2860-2PYC6 TR Datasheet

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MIC2860-2PYC6 TR

Manufacturer Part Number
MIC2860-2PYC6 TR
Description
IC WHITE LED DVR 2CH SC-70-6
Manufacturer
Micrel Inc
Series
-r
Datasheet

Specifications of MIC2860-2PYC6 TR

Constant Current
-
Constant Voltage
-
Topology
Linear (LDO)
Number Of Outputs
2
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
White LED
Frequency
-
Voltage - Supply
3 V ~ 5.5 V
Voltage - Output
0 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
6-TSSOP, SC-88, SOT-363
Operating Temperature
-40°C ~ 85°C
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
576-3897-2
General Description
The MIC2860-2P is a high efficiency white LED (WLED)
driver designed to drive two WLEDs and greatly extend
battery life for portable display backlighting, and keypad
backlighting in low cost mobile devices. The MIC2860-2P
architecture provides the highest possible efficiency by
eliminating switching losses present in traditional charge
pumps or inductive boost circuits. It features a typical
dropout of 52mV at 30.2mA per channel. This allows the
WLEDs to be driven directly from the battery eliminating
switching noise and losses present with the use of boost
circuitry.
The two channels have typical matching of ≤ ±0.5%, which
ensures uniform display illumination under all conditions.
The WLEDs brightness is externally preset by a resistor
and dimmed using PWM interface operating down to less
than 1% duty cycle.
The MIC2860-2P is available in Thin SOT-23 and SC-70
six pin packages with a junction temperature range of
−40°C to +125°C.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
____________________________________________________________________________________________________________
Typical Application
MLF and MicroLeadFrame are registered trademark Amkor Technology Inc.
September 2010
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
LCD Display Backlight with 2 WLEDs
Features
• High efficiency (no switching losses)
• PWM frequency as low as 250Hz
• Input voltage range: 3.0V to 5.5V
• Linear driver dropout of 52mV at 30.2mA
• Matching better than ±0.5% (typical)
• Current accuracy better than 1.0% (typical)
• Available in Thin SOT-23 and SC-70 packages
Applications
• Mobile handsets
• Digital cameras
• Portable media/MP3 players
• Portable navigation devices (GPS)
• Portable applications
408
High Efficiency 2 Channel WLED Driver
) 944-0800 • fax + 1 (408) 474-1000 •
with PWM Control
MIC2860-P
http://www.micrel.com
M9999-092710-A

Related parts for MIC2860-2PYC6 TR

MIC2860-2PYC6 TR Summary of contents

Page 1

... General Description The MIC2860- high efficiency white LED (WLED) driver designed to drive two WLEDs and greatly extend battery life for portable display backlighting, and keypad backlighting in low cost mobile devices. The MIC2860-2P architecture provides the highest possible efficiency by eliminating switching losses present in traditional charge pumps or inductive boost circuits ...

Page 2

... An internal 1.27V reference sets the nominal maximum WLED current. Example, apply a 9.53kΩ resistor between RSET and GND to set LED current to 30.2mA at 100% duty cycle. LED1 driver. Connect LED anode to VIN and cathode to this pin. Do not leave floating. 2 MIC2860-2P (2) Package 6-Pin SC-70 ...

Page 3

... DROPNOM I = 30.2mA OUT Logic Low Logic High ≥1 Shutdown to On Standby Standby T RISE T FALL MIC2860-2P (2) )..................................... +3.0V to +5. .................................... .................................. D1 ........................ –40°C to +125°C J ).....................................................256 ° ..................................................177 ° ≤ 85°C; unless noted. J Min. Typ. Max. 27.18 30.2 33.22 ±0.5 ±3 ...

Page 4

... TEMPERATURE (°C) 120 4 Dropout Voltage vs. Temperature 70 60 LED1 50 40 LED2 -40 - TEMPERATURE (°C) LED Current vs.Temperature 16 15.5 ILED1 15 ILED2 14 9.53KΩ SET 13 -40 - 100 120 TEMPERATURE (°C) MIC2860- 9.53KΩ SET 100 120 R = 19.1KΩ SET 100 120 M9999-092710-A ...

Page 5

... Micrel Inc. Functional Characteristics September 2010 5 MIC2860-2P M9999-092710-A ...

Page 6

... Micrel Inc. Functional Characteristics (Continued) September 2010 6 MIC2860-2P M9999-092710-A ...

Page 7

... Micrel Inc. Functional Diagram September 2010 Figure 1. MIC2860-2P Functional Block Diagram 7 MIC2860-2P M9999-092710-A ...

Page 8

... If dimming is desired the MIC2860-2P can dim via a PWM signal. Block Diagram As shown in Figure 1, the MIC2860-2P consists of two current sinks with the peak current determined by R The linear drivers have a designated control block for enabling and dimming of the WLEDs. The MIC2860-2P is controlled by the PWM control block that receives PWM signals for dimming ...

Page 9

... Micrel Inc. Application Information PWM Dimming Interface The MIC2860-2P can receive PWM signals from the EN pin for WLED dimming. Dimming is generated by pulsing the WLEDs on and off in synchronization with the PWM signal. The MIC2860-2P incorporates an internal shutdown delay to ensure that the internal control circuitry remains active during PWM dimming for optimum performance ...

Page 10

... Micrel Inc. MIC2860-2P Typical Application Circuit Bill of Materials Item Part Number C1 C1608X5R0J105K R1 CRCW06032052FT1 MIC2860-2PYC6 U1 MIC2860-2PYD6 Notes: 1. TDK: www.tdk.com. 2. Vishay: www.vishay.com. 3. Micrel, Inc.: www.micrel.com. September 2010 Manufacturer Description (1) TDK 1µF Ceramic Capacitor, 6.3V, X5R, Size 0603 (2) Vishay 9.53kΩ, 1%, Size 0603 2-Channel PWM Linear WLED Driver, SC-70 (3) Micrel, Inc ...

Page 11

... Micrel Inc. Package Information September 2010 6-Pin SC-70 (C6) 11 MIC2860-2P M9999-092710-A ...

Page 12

... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully September 2010 6-Pin Thin SOT-23 (D6) indemnify Micrel for any damages resulting from such use or sale. © 2010 Micrel, Incorporated. 12 MIC2860-2P http://www.micrel.com M9999-092710-A ...

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