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MIC2296YD5TR, MIC2296YML, MIC2297

Table of contents:
Info of MIC2296YD5TR
Info of MIC2296YML
Info of MIC2297

MIC2296YD5TR, MIC2296YML, MIC2297 Selling Leads, Datasheet

MFG:MICREL Package Cooled:SOT23-5 D/C:07NOPB

MIC2296YD5TR, MIC2296YML, MIC2297 Picture

MIC2296YD5TR, MIC2296YML, MIC2297 Datasheet download

Five Points

Part Number: MIC2296YD5TR

MFG: MICREL

Package Cooled: SOT23-5

D/C: 07NOPB

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MIC2297 General Description

The MIC2297 is a 600KHz PWM boost-switching regulator that is optimized for driving 6-10 series white LEDs. With its internal 40V switch and a guaranteed switch current of 1.2A, the MIC2297 easily drives a string of 10 white LEDs in series at 20mA, ensuring a high level of brightness and eliminating several ballast resistors.

The MIC2297 implements constant frequency 600KHz PWM control. The high frequency PWM operation saves board space by reducing external component sizes. The added benefit of the constant frequency PWM operation is much lower noise and input ripple injected back to the battery source than with variable frequency topologies.

To optimize efficiency, the feedback voltage is set to 200mV. This reduced voltage reduces the power dissipation in the current set resistor, and allows the lowest total output voltage, hence minimal current draw from the battery.

The MIC2297 is available with output over-voltage protection that protects the IC and external components in case of open LED conditions.

The MIC2297 is available in low profile small size 2.5mm x 2.5mm MLF™-10L package. The MIC2297 has a junction temperature range of 40 to +125.

MIC2297 Maximum Ratings

Supply voltage (V_IN)........................................................12V
Switch voltage (V_SW) ........................................ -0.3V to 50V
Enable pin voltage (V_EN)....................................... -0.3 to VIN
FB Voltage (V_FB).................................................................6V
V_BRT ..................................................................................6V
Switch Current (I_SW) .........................................................3A
Ambient Storage Temperature (T_S)...............-65 to +150
ESD Rating ⁽³⁾................................................................ .2KV

MIC2297 Features

• 2.5V to 10V input voltage range
• Output voltage up to 40V
• 1.2A switch current
• 600KHz PWM operation
• Trimmed 200mV feedback voltage
• Output over voltage protection (fixed or adjustable)
• PWM Brightness Control
• DAC Brightness Control
• <1% line regulation
• 1A shutdown current
• Over temperature protection
• UVLO
• 2.5mm x 2.5mm MLF™-10L package
• 40 to +125 junction temperature range

MIC2297 Typical Application

• PDAs
• GPS systems
• Smart phones
• Mini PCs
• Digital cameras
• IP phones
• LED flashlights

MIC2297 Connection Diagram

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