MIC37501 datasheet(3/11 Pages) MICREL

Part #	MIC37501

Description	5A, Low Voltage 關Cap LDO Regulator

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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Micrel, Inc.

MIC37501/37502

February 2007

3

M9999-020507

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 (θJC) .......................................................... 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

+1

%

Output Voltage Accuracy

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

–2

+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

1

%

IL = 2.5A

350

mV

VIN – VOUT, Dropout Voltage

(6)

IL = 5A

330

500

mV

Ground Pin Current

(7)

IL = 5A

57

100

mA

Ground Pin Current in Shutdown

VIL < 0.5V, VIN = VOUT + 1V

1.0

µA

Current Limit

VOUT = 0

5

7.5

11

A

Start-up Time

VEN = VIN, IOUT = 10mA, COUT = 100µF

170

500

µs

Enable Input

Regulator enable

2.25

V

Enable Input Threshold

Regulator shutdown

0.8

V

VIL < 0.8V (Regulator shutdown)

2

4

µA

Enable Pin Input Current

VIH > 2.25V (Regulator enabled)

1

15

30

75

µA

Flag Output

IFLG(LEAK)

VOH = 6V

1

2

µA

VFLG(LO)

VIN = 2.25V, IOL = 250µA

(8)

210

400

500

mV

Low threshold, % of VOUT below nominal

93

%

Hysteresis

2

%

VFLG

High threshold, % of VOUT below nominal

99.2

%

MIC37502 Only

Reference Voltage

1.228

1.215

1.240

1.252

1.265

V

Adjust Pin Bias Current

40

80

120

nA

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