MIC4832 datasheet(3/11 Pages) MICREL

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Micrel

MIC4832

November 2007

M9999-111507-B

Absolute Maximum Ratings(1)

Supply Voltage (VDD)...................................... –0.5V to 6.0V

Output Voltage (VCS) ..................................... –0.5V to 120V

EL Lamp Terminals (VA, VB)................................... VCS + 3V

Switch Voltage (Vsw) ..................................... -0.5V to 120V

Frequency Control Voltage

(VRSW, VREL) ................................... –0.5V to (VDD +0.3V)

Storage Temperature (TS).........................–65°C to +150°C

ESD Rating

(4)...............................................................1.5kV

Operating Ratings(2)

Supply Voltage (VDD).................................... +1.8V to +5.5V

Lamp Drive Frequency (fEL) ....................... 60Hz to 1000Hz

Switching Frequency (fSW).........................65kHz to 250kHz

Ambient Temperature (TA) .......................... –40°C to +85°C

Package Thermal Resistance

(3)

MSOP

(θJA) .....................................................206°C/W

MLF-8L

(θJA)......................................................63°C/W

Electrical Characteristics(5)

VIN = VDD = 3.0V, RSW = 338KΩ, REL = 1.78MΩ. TA = 25°C unless otherwise specified. Bold values indicate –40°C ≤ TA ≤ +85°C

Parameter

Condition

Min

Typ

Max

Units

On-resistance

ISW = 100mA

3.8

Ohm

CS Voltage Variation

105

119

Enable Input Low Voltage

(turn-off)

VDD = 1.8V to 5.5V

0.5

Enable Input High Voltage

(turn-on)

VDD = 1.8V to 5.5V

VDD-

0.5

Shutdown current

RSW Resistor = LOW; REL Resistor = LOW; VDD = 5.5V

0.01

0.5

µA

Input supply current

RSW Resistor = HIGH;

REL Resistor = HIGH;

VCS = 110V; VA, VB OPEN

µA

Input current including

inductor

VIN = VDD = 3.2V; RSW = 338KΩ, REL = 1.78MΩ;

L=220µH; ROUT =10kΩ; Lamp = 2in

VA – VB output drive

frequency

REL = 1.78MΩ

158

200

242

Switching transistor

frequency

RSW = 338KΩ

112

134

kHz

Switching transistor duty

cycle

Notes:

Exceeding the absolute maximum rating may damage the device.

The device is not guaranteed to function outside its operating rating.

The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA. Exceeding the maximum

allowable power dissipation will result in excessive die temperature.

Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.

Specification for packaged product only.

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