March 1999

3-115

MIC5156/5157/5158

Micrel

3

Electrical Characteristics

V

Symbol

Parameter

Condition

Min

Typ

Max

Units

V

DD

Supply Voltage

336

V

I

DD(ON)

Supply Current MIC5156

Operating, V

2.7

10

mA

I

DD(OFF)

Shutdown, V

0.1

5

µA

I

DD(ON)

Supply Current MIC5157/8

Operating, V

4.5

10

mA

I

DD(OFF)

Shutdown, V

0.1

5

µA

V

IH

Enable Input Threshold

High

2.4

1.3

V

V

IL

Low

1.3

0.8

V

EN I

B

Enable Input Bias Current

V

20

25

µA

V

CP

Max. Charge Pump Voltage

V

17.5

18.5

V

f

CP

Charge Pump Frequency

160

kHz

V

OUT MAX

Maximum Gate Drive Voltage

V

(MIC5157/8)

V

5

7.0

9

V

V

9

11.3

15

V

V

24

28

30

V

V

OUT MIN

Minimum Gate Drive Voltage

V

1.0

V

V

LIM

Current Limit Threshold

V

28

35

42

mV

V

S

Source Voltage

Short G (gate) to (S) source, Note 4

MIC5156-3.3

3.267

3.3

3.333

V

MIC5156-5.0

4.950

5.0

5.050

V

MIC5157, 3.3V pin to S pin (3.3V config.)

3.250

3.3

3.350

V

MIC5157, 5V pin to S pin (5V config.)

4.950

5.0

5.050

V

MIC5157, V

11.70

12

12.30

V

MIC5158, 5V FB pin to EA pin (5V config.)

4.925

5.0

5.075

V

V

BG

Bandgap Reference Voltage

MIC5156 [adjustable] and MIC5158

1.222

1.235

1.248

V

V

LR

Output Voltage Line Regulation

5V < V

2

7

mV

V

GS MAX

Gate to Source Clamp

14

16.6

20

V

V

FT

Flag Comparator Threshold

% of nominal V

SOURCE

92

%

V

FH

Flag Comparator Hysteresis

% of nominal V

SOURCE

3%

V

SAT

Flag Comparator Sat. Voltage

I

0.09

0.2

V

Note 1.

Exceeding the absolute maximum rating may damage the device.

Note 2.

The device is not guaranteed to function outside its operating rating.

Note 3.

Devices are ESD sensitive. Handling precautions recommended.

Note 4.

Test configuration. External MOSFET not used.

Supply Input (V

Enable Input (V

Gate Output (V

Charge Pump Node (V

Source Connection (V

Flag (V

Storage Temperature (T

Lead Temperature (soldering 10 sec.) ...................... 300

°C

Ambient Temperature Range (T

MIC515xBM/BN ..................................... –40

°C to +85°C

Junction Temperature (T

Thermal Resistance (

θ

Package

MIC5156

MIC5157/8

DIP ............................... 100

°C/W ..................... 90°C/W

SOP .............................. 160

°C/W ................... 120°C/W