RT9205CS Ver la hoja de datos (PDF) - Richtek Technology

Número de pieza

componentes Descripción

Fabricante

RT9205CS

5V/12V Synchronous Buck PWM DC-DC Controller

Richtek Technology 

Preliminary

RT9205/A

Absolute Maximum Ratings

Supply Voltage VCC

BOOT & UGATE to GND

Input, Output or I/O Voltage

Package Thermal Resistance

SOP-14, θJA

Ambient Temperature Range

Junction Temperature Range

Storage Temperature Range

Lead Temperature (Soldering, 10 sec.)

7V

19V

GND−0.3V ~ 7V

160°C/W

0°C ~ +70°C

-40°C ~ +125°C

−65°C ~ +150°C

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

(VCC = 5V, TA = 25°C, Unless otherwise specified.)

Parameter

Symbol

Test Conditions

VCC Supply Current

Nominal Supply Current

ICC

UGATE, LGATE open

VCC Regulated Voltage

ICC

VBOOT = 12V

Power-On Reset

Rising VCC Threshold

VCC Threshold Hysteresis

Reference

Reference Voltage

Oscillator

VFB

Both PWM and linear regulator

Free Running Frequency

Ramp Amplitude

∆ VOSC

PWM Error Amplifier

DC gain

PWM Controller Gate Driver

Upper Drive Source

RUGATE

BOOT= 12V

BOOT-VUGATE = 1V

Upper Drive Sink

Lower Drive Source

Lower Drive Sink

Linear Regulator

RUGATE

RLGATE

RLGATE

VUGATE = 1V

VCC - VLGATE = 1V,

VLGATE = 1V

DRV Driver Source

VDRV = 2V

Protection

FB Over-Voltage Trip

FB Rising

FB & FBL Under-Voltage Trip

FB & FBL Falling

Soft-Start Interval

Min Typ Max Units

--

3

-- mA

5

6

7

V

3.8 4.1 4.4 V

-- 0.5 --

V

0.784 0.8 0.816 V

250 300 350 KHz

-- 1.75 -- VP-P

32 35 38 dB

-- 7.5 11 Ω

-- 5

8

Ω

-- 3.5 6

Ω

-- 2

5

Ω

100 --

-- mA

0.9 1

--

V

-- 0.5 0.65 V

-- 2.5 -- mS

DS9205/A-03 May 2003

www.richtek.com

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