MIC37501 datasheet(3/11 Pages) MICREL

3 / 11 page

Micrel, Inc.

MIC37501/37502

May 2011

M9999-050511-B

Absolute Maximum Ratings(1)

Supply Voltage (VIN) ................................................. 6.5V

Enable Input Voltage (VEN) ....................................... 6.5V

Power Dissipation(PD) .......................... Internally Limited

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

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

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

ESD Rating

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

Operating Ratings(2)

Supply Voltage (VIN) ......................................... 2.3V to 6.0V

Enable Input Voltage (VEN) .................................. 0V to 6.0V

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

Maximum Power Dissipation .....................................Note 4

Package Thermal Resistance

S-Pak(θJA) ......................................................... 38°C/W

S-Pak(θJC) ........................................................... 2°C/W

TO-263(θJA).................................................... 26.2°C/W

TO-263(θJC)......................................................... 2°C/W

Electrical Characteristics(5)

TA = 25°C with VIN = VOUT + 1V; VEN = VIN; bold values indicate –40°C < TJ < +125°C; unless otherwise noted.

Parameter

Condition

Min

Typ

Max

Units

IL = 10mA

–1

Output Voltage Accuracy

10mA < IOUT < IL(max), VOUT + 1 ≤ VIN ≤ 6V

–2

Output Voltage Line Regulation

VIN = VOUT +1.0V to 6.0V

0.06

0.5

Output Voltage Load Regulation

IL = 10mA to 5A

0.2

IL = 2.5A

350

VIN – VOUT, Dropout Voltage

(6)

IL = 5A

330

500

Ground Pin Current

(7)

IL = 5A

100

Ground Pin Current in Shutdown

VIL < 0.5V, VIN = VOUT + 1V

1.0

µA

Current Limit

VOUT = 0

7.5

Start-up Time

VEN = VIN, IOUT = 10mA, COUT = 100µF

170

500

µs

Enable Input

Regulator enable

2.25

Enable Input Threshold

Regulator shutdown

0.8

VIL < 0.8V (Regulator shutdown)

µA

Enable Pin Input Current

VIH > 2.25V (Regulator enabled)

µA

Flag Output

IFLG(LEAK)

VOH = 6V

µA

VFLG(LO)

VIN = 2.25V, IOL = 250µA

(8)

210

400

500

Low threshold, % of VOUT below nominal

Hysteresis

VFLG

High threshold, % of VOUT below nominal

99.2

MIC37502 Only

Reference Voltage

1.228

1.215

1.240

1.252

1.265

Adjust Pin Bias Current

120

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