MIC3205 datasheet(3/23 Pages) MICREL

3 / 23 page

Micrel, Inc.

MIC3205

October 2012

M9999-102312-A

Absolute Maximum Ratings (1)

VIN to PGND .................................................. 0.3V to 42V

VINS to PGND......................................... 0.3V to (VIN+0.3V)

VCC to PGND ................................................ 0.3V to 6.0V

CS to PGND........................................

0.3V to (VIN  0.3V)

EN to AGND........................................

0.3V to (VIN  0.3V)

DIM to AGND ......................................

0.3V to (VIN  0.3V)

CTIMER to AGND ..............................

0.3V to (VCC  0.3V)

DRV to PGND ....................................

0.3V to (VCC  0.3V)

PGND to AGND ..........................................

0.3V to  0.3V

Junction Temperature ................................................ 150

C

Storage Temperature Range ....................

60°C to 150C

Lead Temperature (Soldering, 10sec) ....................... 260

C

ESD Ratings

(3)

HBM...................................................................... 1.5kV

MM.........................................................................200V

Operating Ratings (2)

Supply Voltage (VIN).......................................... 4.5V to 40V

Enable Voltage (VEN) .............................................. 0V to VIN

Dimming Voltage (VDIM).................................................................0V to VIN

Junction Temperature (TJ) ........................ 40C to 125C

Junction Thermal Resistance

10-pin 3x3 MLF (

JA).......................................60.7C/W

10-pin 3x3 MLF (

JC).......................................28.7C/W

Electrical Characteristics (4)

VIN = VEN = VDIM = 12V; CVCC = 4.7µF; TJ = 25C; bold values indicate 40C  TJ  125C, unless noted.

Symbol

Parameter

Condition

Min.

Typ.

Max.

Units

Input Supply

VIN

Input Voltage Range (VIN)

4.5

Supply Current

DRV = Open

1.3

ISD

Shutdown Current

VEN = 0V

µA

UVLO

VIN UVLO Threshold

VIN Rising

3.2

4.5

UVLOHYS

VIN UVLO Hysteresis

600

VCC Supply

VCC

VCC Output Voltage

VIN = 12V, ICC = 5mA

4.5

5.5

Current Sense

190

200

210

∆VCS

Average Current Sense

Threshold

∆VCS =VINS  VCS

188

200

212

VCS Rising

∆tCS

Current Sense Response

Time

VCS Falling

ICS

CS Input Current

VIN = VCS

0.5

µA

∆VHYS

Sense Voltage Hysteresis

(5)

VIN =12V, VLED =3V,

L=47µH, FSW =250kHz,

VD = 0.7V, ILED = 1A

Frequency

ITIMER

CTIMER Pull-up Current

µA

VCTREF

CTIMER Threshold

1.189

(4*ITIMER)/

VCTREF

Frequency Coefficient

(6)

1.776 × 10

-4

2.22 × 10

-4

2.664 × 10

-4

A/V

MIC3205 Datasheet(PDF) 3 Page - Micrel Semiconductor

MIC3205 Datasheet(HTML) 3 Page - Micrel Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Datasheet Download

Link URL