MIC2186 datasheet(3/15 Pages) MICREL

3 / 15 page

April 2005

M9999-042205

MIC2186

Micrel, Inc.

Electrical Characteristics

INA = 5V, VINP = VOUT = 12V, SKIP = 0V, FREQ/2 = 0V, HiDC = 3V, VCSH = 0V, TJ = 25°C, unless otherwise specified. Bold values

indicate –40°C < TJ < +125°C.

Parameter

Condition

Min

Typ

Max

Units

Regulation

Feedback Voltage Reference

(±1%)

1.233

1.245

1.258

(±2%)

1.220

1.270

3V ≤ VINA ≤ 9V; 0mV ≤ CSH ≤ 75mV; (±3%)

1.208

1.245

1.282

Feedback Bias Current

Output Voltage Line Regulation

3V ≤ VINA ≤ 9V

+0.08

% / V

Output Voltage Load Regulation

0mV ≤ CSH ≤ 75mV

–1.2

Input & V

DD Supply

INA Input Current, PWM mode

SKIP = 0V

0.7

INP Input Current, PWM mode

SKIP = 0V (excluding external MOSFET gate current)

2.8

INA Input Current, SKIP mode

SKIP = 5V

0.6

Shutdown Quiescent Current

VEN/UVLO = 0V; (I

VINA + IVINP)

0.5

µA

Digital Supply Voltage (VDD)

L = 0

2.82

3.0

3.18

Digital Supply Load Regulation

L = 0 to 0.5mA

0.03

Undervoltage Lockout

DD upper threshold (turn on threshold)

2.9

2.75

DD lower threshold (turn off threshold)

2.65

Reference Output (V

REF)

Reference Voltage

(±1.5%)

1.226

1.245

1.264

(±2.5%)

1.213

1.276

Reference Voltage Line

5V < VinA < 9V

Regulation

Reference Voltage Load

0 < I

REF < 100µA1

Regulation

Absolute Maximum Ratings (Note 1)

Supply Voltage (V

INA, VINP) ......................................... 15V

Digital Supply Voltage (V

DD) ........................................... 7V

SKIP Pin Voltage (V

SKIP) ................................. –0.3V to 7V

Max Duty Cycle Pin Voltage (V

HIDC) ................ –0.3V to 7V

Frequency Divider Pin Voltage (V

FREQ/2) ........ –0.3V to 7V

Sync Pin Voltage (V

SYNC) ................................ –0.3V to 7V

Comp Pin Voltage (V

COMP) .............................. –0.3V to 3V

Feedback Pin Voltage (V

FB) ............................ –0.3V to 3V

Enable Pin Voltage (V

EN/UVLO) ...................... –0.3V to 15V

Current Sense Voltage (V

CSH) ......................... –0.3V to 1V

Power Dissipation (P

16 lead SOP .............................. 400mW @ T

A = 85°C

16 lead QSOP ........................... 245mW @ T

A = 85°C

Ambient Storage Temp ............................ –65°C to +150°C

ESD Rating (Note 3)

Operating Ratings (Note 2)

Supply Voltage (V

INA, VINP) ........................ +2.9V to +14V

Operating Ambient Temperature ......... –40°C ≤ TA ≤ +85°C

Junction Temperature ....................... –40°C ≤ TJ ≤ +125°C

PackageThermal Resistance

θJA 16-lead SOP ............................................... 100°C/W

θJA 16-lead QSOP ............................................. 163°C/W

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