MIC3201 datasheet(3/16 Pages) MICREL

3 / 16 page

Micrel, Inc.

MIC3201

February 2011

M9999-021011-B

Absolute Maximum Ratings(1)

VIN, VCS to PGND/AGND ................................ -0.3V to +22V

VDIM, VEN to PGND/AGND ..................................-0.3V to VIN

VLX to PGND/AGND ................................. -0.3V to VIN+1.0V

VCC to PGND/AGND ..................................... -0.3V to +7.0V

VCS to VIN ...................................................................... 0.3V

VPGND to VAGND ............................................... -0.3V to +0.3V

Storage Temperature (Ts).........................–60°C to +150°C

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

ESD Ratings (HBM)

(3) ...... ................................………..2kV

(MM)

(3)......................... ...........................100V

Operating Ratings(2)

Supply Voltage (VIN).......................................... 6.0V to 20V

Junction Temperature (TJ) .........................-40°C to +125°C

Junction Thermal Resistance

SOIC (

θJA)..........................................................41°C/W

SOIC (

θJC).......................................................14.7°C/W

Electrical Characteristics(4)

VIN = 12V, VDIM = VEN = VIN, CVCC = 1µF, bold values indicate –40°C≤ TJ ≤ +125°C, unless noted.

Typical values are at TA = +25°C.

Symbol

Parameter

Condition

Min

Typ

Max

Units

VIN

Operating Input Voltage Range

6.0

20.0

Supply Current

LX open

1.2

1.75

ISD

Shut Down Supply Current

VEN = 0V

TA = 25ºC

µA

VCS(MAX)

Sense Voltage Threshold High

VIN - VCS

206

224

VCS(MIN)

Sense Voltage Threshold Low

VIN - VCS

171

189

VHYS

Current Sense Hysteresis

VCS Rising

100

Current Sense Response Time

VCS Falling

CS Pin Input Current

VIN - VCS = 200mV

µA

RDSON

Internal Switch RON

300

550

mΩ

FMAX

Maximum Switching Frequency

1.0

MHz

VCC

VCC Regulator

ENHI

EN Input Voltage High

2.0

ENLO

EN Input Voltage Low

0.4

EN Input Current High

VEN =12V

µA

EN Input Leakage Low

VEN = 0V

µA

DIMHI

DIM Input Voltage High

2.0

DIMLO

DIM Input Voltage Low

0.4

DIM Input Current High

VDIM =12V

µA

DIM Input Leakage Low

VDIM= 0V

µA

FDIM

Maximum DIM Frequency

kHz

LX Pin Leakage Current

VIN - VCS ≥ 250mV

VLX=VIN

µA

TLIM

Over-Temperature Shutdown

165

ºC

TLIMHYS

Over-Temperature Shutdown Hysteresis

ºC

Start-up Time

From EN Pin going high,

DIM = 12V, CVCC = 1µF

300

µs

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. Human body model, 1.5k in series with 100pF.

4. Specification for packaged product only.

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