RT6908

9

DS6908-01

March 2013

www.richtek.com

Copyright

2013 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

©

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

FBB2 Fault Trip Level

0.6144

0.64

0.6656

V

FBB2 Short Trip Level

--

0.16

--

V

ILIMIT2 Source Current

--

40

--

μA

Low Side Switch Current

Limit

Cycle by Cycle

--

/ 8

--

V

Maximum ILIMIT2

Voltage Setting

--

2.4

--

V

Negative Charge Pump Controller (VGL)

VGL Adjustable Output

Voltage Range

= (

−1.8V to −8.1V) [00h to 3Fh]

−8.1

--

−1.8

V

VGL Regulation Voltage

(Default)

−6.3

−6

−5.7

V

DRVN Sink Current Limit

--

3.5

5

mA

DRVN Short Circuit

Current

--

300

--

μA

VGL Load Regulation

Error

--

60

--

mV/mA

Soft-Start Period

--

3

--

ms

VGL Fault Trip Level

+ 1.5

--

+ 2.5

V

VGL Short Trip Level

−0.5

V

Positive Charge Pump Controller (VGH)

VGH Adjustable Output

Voltage Range

Register Address = ”01h”, 5 bits,

24.5

--

40

V

VGH Regulation Voltage

(Default)

34.79

35.5

36.21

V

DRVP Source Current

Limit

--

3.5

5

mA

DRVP Short Circuit

Current

--

80

--

μA

VGH Load Regulation

Error

--

300

--

mV/mA

Soft-Start Period

--

4

--

ms

VGH Fault Trip Level

x 70

x 75

x 80

%

VGH Short Trip Level

--

20

--

%

Note 1. Stresses beyond those listed

“Absolute Maximum Ratings” may cause permanent damage to the device. These are

stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in

the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may

affect device reliability.

Note 2.

measured at the exposed pad of the package.

Note 3. Devices are ESD sensitive. Handling precaution is recommended.

Note 4. The device is not guaranteed to function outside its operating conditions.