MIC3975 datasheet(3/12 Pages) MICREL

3 / 12 page

February 2005

MIC3975

Micrel

Electrical Characteristics(Note 12)

VIN = VOUT + 1V; VEN = 2.25V; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted

Symbol

Parameter

Condition

Min

Typ

Max

Units

VOUT

Output Voltage

10mA

–1

10mA ≤ IOUT ≤ 750mA, VOUT + 1V ≤ VIN ≤ 8V

–2

Line Regulation

IOUT = 10mA, VOUT + 1V ≤ VIN ≤ 16V

0.06

0.5

Load Regulation

VIN = VOUT + 1V, 10mA ≤ IOUT ≤ 750mA,

0.2

ΔVOUT/ΔT

Output Voltage Temp. Coefﬁcient,

100

ppm/°C

Note 5

VDO

Dropout Voltage,

Note 6

IOUT = 100mA, ΔVOUT = –1%

140

200

250

IOUT = 500mA, ΔVOUT = –1%

225

IOUT = 750mA, ΔVOUT = –1%

300

500

IGND

Ground Current,

Note 7

IOUT = 100mA, VIN = VOUT + 1V

400

µA

IOUT = 500mA, VIN = VOUT + 1V

IOUT = 750mA, VIN = VOUT + 1V

7.5

IOUT(lim)

Current Limit

VOUT = 0V, VIN = VOUT + 1V

1.8

2.5

Enable Input

VEN

Enable Input Voltage

logic low (off)

0.8

logic high (on)

2.25

IEN

Enable Input Current

VEN = 2.25V

µA

VEN = 0.8V

µA

Flag Output

IFLG(leak)

Output Leakage Current

VOH = 16V

0.01

µA

VFLG(do)

Output Low Voltage

VIN = 2.250V, IOL, = 250µA, Note 9

210

300

400

VFLG

Low Threshold

% of VOUT

High Threshold

% of VOUT

99.2

Hysteresis

Absolute Maximum Ratings (Note 1)

Supply Voltage (VIN).......................................–20V to +20V

Enable Voltage (VEN) ..................................................+20V

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

Lead Temperature (soldering, 5 sec.)........................ 260°C

ESD,

Note 3

Operating Ratings (Note 2)

Supply Voltage (VIN)................................... +2.25V to +16V

Enable Voltage (VEN) ..................................................+16V

Maximum Power Dissipation (PD(max))..................... Note 4

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

Package Thermal Resistance

MSOP-8 (θJA) ......................................................80°C/W

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