RT9238 Ver la hoja de datos (PDF) - Richtek Technology

Número de pieza

componentes Descripción

Lista de partido

RT9238

VRM8.5 PWM and Triple Linear Power System Controller

Richtek Technology 

Preliminary

RT9238

Absolute Maximum Ratings

z Supply Voltage

z FAULT/VID4 and GATE Voltage

z Input, Output or I/O Voltage

z Ambient Temperature Range

z Operating Junction Temperature Range

z Storage Temperature Range

z Lead Temperature (Soldering, 10 sec.)

z Package Thermal Resistance

SOP-28, θJA

Recommended Operating Conditions

z Supply Voltage

z Ambient Temperature Range

z Junction Temperature Range

+15V

GND−0.3V ~ VCC+0.3V

GND−0.3V ~ 7V

0°C ~ +70°C

0°C ~ +125°C

−65°C ~ +150°C

300°C

60°C/W

+12V±10%

0°C to 70°C

0°C to 125°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

(VCC = 12V, PGND = 0V, TA = 25°C, Unless otherwise specified.)

Parameter

Symbol

Test Conditions

VCC Supply Current

Nominal Supply Current

ICC

UGATE1, LGATE1, DRIVE2,

DRIVE3, and DRIVE4 Open

Power-On Reset

VCC Rising Threshold

VCC Falling Threshold

Rising VAUX Threshold

VAUX Threshold Hysteresis

Rising VOCSET1 Threshold

DAC AND Band Gap Reference

VOCSET1 = 4.5V

VOCSET1 = 4.5V

VOCSET1 = 4.5V

VOCSET1 = 4.5V

DAC (VID25-VID3) Input Low Voltage

DAC(VID25-VID3) Input High Voltage

DACOUT Voltage Accuracy

VDAC + 40mV

Oscillator

Free Running Frequency

Ramp Amplitude

∆ VOSC

Min Typ Max Units

-- 10 -- mA

6.5 -- 9.5

V

6

--

9

V

-- 1.5 --

V

-- 0.2 --

V

-- 1.25 --

V

--

-- 0.8

V

2.0 --

--

V

-10 -- +20 mV

180 200 225 KHz

--

1.9

--

VP-P

To be continued

DS9238-01 July 2001

www.richtek-ic.com.tw

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