MIC4827BMM datasheet(3/15 Pages) MICREL

3 / 15 page

Micrel, Inc.

MIC4827

July 2009

M9999-070709-A

(408) 955-1690

Absolute Maximum Ratings

(1)

Supply Voltage (VDD)............................................–0.5 to 6V

Output Voltage (VCS) ........................................–0.5 to 100V

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

Power Dissipation @ TA = 85°C ..............................200mW

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

EDS Rating

(3)

Operating Ratings

(2)

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

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

Switching Transistor Frequency (fSW) ........8KHz to 200KHz

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

Junction Thermal Resistance

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

Electrical Characteristics

(4)

VIN = VDD = 3.0V; RSW = 560KΩ; REL = 1.0MΩ; TA = 25°C, bold values indicate –40°C< TA < +85°C, unless noted.

Symbol

Parameter

Condition

Min

Typ

Max

Units

RDS(ON)

On-resistance of switching

transistor

ISW = 100mA, VCS = 85V

3.8

7.0

Ω

VCS

Output voltage regulation

VDD = 1.8V to 5.5V

170

180

190

VA – VB

Output peak-to-peak voltage

VDD = 1.8V to 5.5V

166

194

VEN-L

Input low voltage (turn-off)

VDD = 1.8V to 5.5V

0.5

VEN-H

Input high voltage (turn-on)

VDD = 1.8V to 5.5V

VDD–

0.5

ISD

Shutdown current, Note 5

RSW = LOW; REL = LOW;

VDD = 5.5V

0.01

0.1

0.5

µA

IVDD

Input supply current

RSW = HIGH; REL = HIGH;

VCS = 85V; VA, VB OPEN

µA

ICS

Boosted supply current

RSW = HIGH; REL = HIGH;

VCS = 85V; VA, VB OPEN

200

400

µA

IIN

Input current including inductor

current

VIN = VDD = 1.8V

(See Test Circuit)

fEL

VA – VB output drive frequency

285

360

435

fSW

Switching transistor frequency

kHz

Switching transistor duty cycle

Notes:

1. Exceeding the absolute maximum rating may damage the device.

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

3. Devices are ESD sensitive. Handling precautions recommended.

4. Specification for packaged product only.

5. Shutdown current is defined as the sum of current going into pin 1, 5, and 6 when the device is disabled.

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