RT9248

Preliminary

7

DS9248-05

March 2007

www.richtek.com

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

DAC (VID0-VID4) Input Low

VRD10

--

--

0.4

V

DAC (VID0-VID4) Input High

VRD10

0.8

--

--

V

DAC (VID0-VID4 ) Input Low

VRM9

--

--

0.8

V

DAC (VID0-VID4) Input High

VRM9

2.2

--

--

V

VID125 Input for VRM9

--

--

0.4

V

VID125 Input for VRD10

0.8

--

--

V

DAC (VID0-VID125) Bias Current

60

120

180

μA

VOSS Pin Voltage

0.95

1.0

1.05

V

Error Amplifier

DC Gain

--

85

--

dB

Gain-Bandwidth Product

GBW

--

10

--

MHz

Slew Rate

SR

COMP = 10pF

--

3

--

V/

μs

Differential Sense Amplifier

Input Impedance

--

16

--

k

Ω

Gain-Bandwidth Product

GBW

--

10

--

MHz

Slew Rate

SR

--

3

--

V/

μs

Current Sense GM Amplifier

ISP 1,2,3 Full Scale Source Current

60

--

--

μA

ISP 1,2,3 Current for OCP

90

--

--

μA

Protection

IMAX Voltage

0.55

0.60

0.65

V

SS Current

--

13

--

μA

Over-Voltage Trip (VSEN/DACOUT)

ΔOVT

--

140

--

%

Power Good

Lower Threshold (VSEN/DACOUT)

VSEN Rising

--

92

--

%

Output Low Voltage

--

--

0.2

V

Note 1. Stresses listed as the above

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

for stress ratings. 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 for extended

periods may remain possibility to affect device reliability.

Note 2. Devices are ESD sensitive. Handling precaution recommended

Note 3. The device is not guaranteed to function outside its operating conditions.