Microchip MIC2289-34YML-TR

Manufacturer No:

MIC2289-34YML-TR

Manufacturer:

Microchip

Package:

8-VFDFN Exposed Pad, 8-MLF®

Description:

White LED Driver w/ 34V OVP

Quantity:

Delivery:

Payment:

In Stock :Available

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MIC2289-34YML-TR information

Microchip MIC2289-34YML-TR technical specifications, attributes, parameters and parts with similar specifications to Microchip MIC2289-34YML-TR.

Type
Parameter

Topology
Boost

+Vin min (V)
2.5

+Vin max (V)
10

Output Current
2A BJT

Dimming
PWM / Analog

Package
TSOT, VDFN

Product Type
LED Backlight

VOUT
34

llim Typ (A)
0.75

llim Max (A)
0

lq Typ
2.5mA

Int Diode
Yes

Vfb (V)
0.095

Tol Typ %
±5

Duty Cycle Max
0.9

Freq (Hz)
1.2M

VEN (V)
1.5

Soft Start
Yes

UVLO Typ (V)
2.1

Ceramic Cap
Yes

Oja (C/W)
177, 90

Download datasheets and manufacturer documentation for Microchip MIC2289-34YML-TR.

Data Sheets:

d289a6ede058da301fc3b38f547b3220.pdf

The MIC2289 is a PWM (pulse width modulated), boost-switching regulator that is optimized for constant-current white LED driver applications. The MIC2289 features an internal Schottky diode and three levels of output overvoltage protection providing a small size and efficient DC/DC solution that requires only four external components.

To optimize efficiency, the feedback voltage is set to only 95mV. This reduces power dissipation in the current set resistor and allows the lowest total output voltage, hence minimal current draw from the battery.

The MIC2289 implements a constant frequency 1.2MHz PWM control scheme. The high frequency, PWM operation saves board space by reducing external component sizes. The added beneﬁt of the constant frequency PWM scheme in caparison to variable frequency is much lower noise and input ripple injected to the input power source.

The MIC2289 clamps the output voltage in case of open LED conditions, protecting itself and the output capacitor. The MIC2289 is available with three output OVP options of 15V, 24V, and 34V. The different OVP options allows the use of the smallest possible output capacitor with the appropriate voltage rating for a given application.

The MIC2289 has a junction temperature range of -40°C to +125°C.

2.5V to 10V input voltage
Output voltage up to 34V
Internal Schottky diode
15V, 24V, 34V output OVP options
1.2MHz PWM operation
Over 500mA switch current
95mV feedback voltage
<1% line and load regulation
<1µA shutdown current
Overtemperature protection
UVLO
-40°C to +125°C junction temperature range

User Guide

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