RT9231A データシートの表示（PDF） - Richtek Technology

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RT9231A

Advanced PWM and Triple Linear Power Controller

Richtek Technology 

Parameter

Symbol

Test Conditions

Oscillator

Free Running Frequency

Ramp Amplitude

∆ VOSC

Linear Regulators (OUT2, OUT3, and OUT4)

VSEN2 Regulation Voltage

SELECT < 0.8V

VSEN2 Regulation Voltage

SELECT > 2.0V

VSEN3 Regulation Voltage

VSEN4 Regulation Voltage

Under-Voltage Level

(All Linears) (VSEN/VREG)

VSEN3 Rising

Under-Voltage Hysteresis

(All Linears) (VSEN/VREG)

VSEN3 Falling

Output Drive Current (All Linears)

VAUX = 5V

Synchronous PWM Controller Error Amplifier

DC Gain

PWM Controller Gate Driver

UGATE Source

UGATE Sink

LGATE Source

LGATE Sink

Protection

RUGATE

RUGATE

ILGATE

RLGATE

VCC = 12V

VCC-VUGATE = 1V

VUGATE = 1V

VCC = 12V, VLGATE = 2V

VLGATE = 1V

VOUT1 Over-Voltage Trip

FAULT Souring Current

OCSET1 Current Source

Soft-Start Current

Power Good

IOCSET

ISS

VSEN1 Rising

VFAULT = 8V

VOCSET1 = 4.5V

VSS = 1V

VOUT1 Upper Threshold

VOUT1 Under Voltage

VOUT1 Hysteresis (VSEN1/DACOUT)

PGOOD Voltage Low

VPGOOD

VSEN1 Rising

VSEN1 Rising

Upper/Lower Threshold

IPGOOD = -4mA

RT9231A

Min Typ Max Units

180 200 225 kHz

-- 1.9 -- VP-P

1.462 1.500 1.538 V

3.500 3.600 3.700 V

1.455 1.500 1.545 V

1.746 1.800 1.854 V

-- 75 --

%

-- 100 -- mV

20 40 -- mA

-- 65 -- dB

-- 4

7

Ω

-- 3

7

Ω

-- 1

--

A

-- 2

6

Ω

112 115 124 %

10 14 -- mA

170 200 230 µA

-- 28 -- µA

108 -- 112 %

87 -- 95 %

--

2

--

%

-- -- 0.5 V

DS9231A-02 July 2001

www.richtek.com

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