RT9202

DS9202-02 August 2002

www.richtek.com

5

Absolute Maximum Ratings

Supply Voltage VCC

7V

BOOT & UGATE to GND

15V

Input, Output or I/O Voltage

GND

−0.3V ~ 7V

SOP-8

0.625W

Package Thermal Resistance

SOP-8,

160

°C/W

Ambient Temperature Range

0

°C ~ +70°C

Junction Temperature Range

-40

°C ~ +125°C

Storage Temperature Range

-65

°C ~ +150°C

Lead Temperature (Soldering, 10 sec.)

260

°C

CAUTION:

Stresses beyond the ratings specified in “Absolute Maximum Ratings” may cause permanent damage to the

device. This is a stress only rating and operation of the device at these or any other conditions above those

indicated in the operational sections of this specification is not implied.

Electrical Characteristics

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

VCC Supply Current / Regulated Voltage

Nominal Supply Current

UGATE, LGATE open

--

3

6

mA

Regulated Voltage from BOOT

56

7

V

Power-On Reset

Rising VCC Threshold

3.85

4.1

4.35

V

VCC Threshold Hysteresis

0.3

0.5

0.7

V

0.8

1.25

2.0

V

Reference

Reference Voltage

0.784

0.8

0.816

V

Oscillator

Free Running Frequency

250

300

350

KHz

Ramp Amplitude

--

1.75

--

Error Amplifier

DC gain

32

35

38

dB

PWM Controller Gate Driver

Upper Drive Source

BOOT= 12V

--

7

11

Ω

Upper Drive Sink

--

5

7.5

Ω

Lower Drive Source

--

4

6

Ω

Lower Drive Sink

--

2

4

Ω

To be continued