MIC3291 Ver la hoja de datos (PDF) - Micrel

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MIC3291

1.2MHz PWM White LED Driver with Internal Schottky Diode and Single-Wire Linear Brightness Control

Micrel 

Micrel, Inc.

MIC3291

Electrical Characteristics(4) (Continued)

TA = +25oC, VIN = 3.6V, VOUT = 10V, IOUT = 20mA, unless otherwise noted. Bold values indicate −40°C ≤ TJ ≤ +125°C.

Symbol Parameter

Condition

Min. Typ. Max.

VD

Schottky Forward Drop

ID = 150mA

0.8

1

IRD

Schottky Leakage Current VR = 30V

4

VOVP

Over-Voltage Protection

3291- 18 only (nominal voltage)

3291- 25 only (nominal voltage)

15 16.5 18

22.1 23.5 25

Tj

Over-Temperature

Threshold Shutdown

150

Units

V

μA

V

°C

Notes:

1. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating

the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(Max), the

junction-to-ambient thermal resistance, θ JA, and the ambient temperature, TA. The maximum allowable power dissipation will result in excessive die

temperature, and the regulator will go into thermal shutdown.

2. IC devices are inherently ESD sensitive. Handling precautions required. Human body model, 1.5kΩ in series with 100pF.

3. This device is not guaranteed to operate beyond its specified operating rating.

4. Specification for packaged product only.

September 2010

4

M9999-092810

(408) 944-0800

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