MIC4826 datasheet(3/12 Pages) MICREL

3 / 12 page

March 2009

MIC4826

Micrel

Electrical Characteristics

VIN = VDD = 3.0V, RSW = 560KΩ, REL = 1.0MΩ. TA = 25°C unless otherwise specified. Bold values indicate -40°C ≤ TA ≤ +85°C

Symbol

Parameter

Condition

Min

Typ

Max

Units

RDS(ON)

On-resistance of switching transistor ISW = 100 mA, VCS = 75V

3.8

7.0

Ω

VCS

Output voltage regulation

VDD = 1.8V to 5.5V

VA–VB

Output peak-to-peak voltage

VDD = 1.8V to 5.5V

150

160

170

146

174

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 4

RSW = LOW; REL = LOW;

0.01

0.1

µA

VDD = 5.5V

0.5

µA

IVDD

Input supply current

RSW = HIGH; REL = HIGH;

µA

VCS = 75V; VA, VB OPEN

ICS

Boosted supply current

RSW = HIGH; REL = HIGH;

200

400

µA

VCS = 75V; VA, VB OPEN

IIN

Input current including inductor

VIN = VDD = 1.8V

current

(See Test Circuit)

fEL

VA–VB output drive frequency

285

360

435

fSW

Switching transistor frequency

kHz

Switching transistor duty cycle

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

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

Note 3. Devices are ESD sensitive. Handling precautions recommended.

Note 4. Shutdown current is defined as the sum of current going into pin 1, 5, and 6 when the device is disabled.

Test Circuit

442k

COUT

0.01µF/100V

BAV19WS

220µH

VDD

RSW

REL

GND

MIC4826

CIN

10µF

VIN

10nF

100Ω

Absolute Maximum Rating (Note 1)

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

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

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

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

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

ESD Rating ..............................................................

Note 3

Operating Ratings (Note 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

Package Thermal Resistance

8-pin MSOP (θJA) ..............................................206°C/W

MIC4826 Datasheet(PDF) 3 Page - Micrel Semiconductor

MIC4826 Datasheet(HTML) 3 Page - Micrel Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12

Datasheet Download

Link URL