RT9230 Просмотр технического описания (PDF) - Richtek Technology

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RT9230

1.5V advanced dual PWM and dual linear power controller

Richtek Technology 

RT9230

Parameter

Symbol

Test Conditions

Min Typ Max Units

DAC and Standard Buck Regulator Reference

DAC (VID0 ~ VID4) Input Low Voltage

--

-- 0.8 V

DAC (VID0 ~ VID4) Input High Voltage

2

--

--

V

DACOUT Voltage Accuracy

DACOUT = 2.05 ~ 3.50V

-1

--

1

%

DACOUT Voltage Accuracy

DACOUT = 1.30 ~ 2.00V

-1% -- 20mV --

AGP PWM Reference Voltage

SELECT < 0.8V

--

1.5

--

V

AGP PWM Reference Voltage

SELECT > 2.0V

--

3.3

--

V

AGP PWM Reference Voltage Tolerance

-2.5 -- 2.5 %

1.5V and 1.8V Linear Regulators (VOUT3 and VOUT4)

Regulation

-3

--

3

%

VSEN3 Under-voltage Level

VSEN3 Rising

-- 1.125 --

V

VSEN3 Under-voltage Hysteresis

VSEN3 Falling

-- 100 -- mV

VSEN4 Under-voltage Level

VSEN4 Rising

-- 1.350 --

V

VSEN4 Under-voltage Hysteresis

VSEN4 Falling

-- 100 -- mV

Output Drive Current

VAUX = 5V

20

40

-- mA

Synchronous PWM Controller Error Amplifier

DC Gain

--

65

--

dB

PWM Controller Gate Driver

UGATE 1 (and 2) Source

UGATE 1 (and 2) Sink

LGATE Source

LGATE Sink

Protection

RUGATE VCC = 12V, VCC-VUGATE = 1V --

4

7

Ω

RUGATE VUGATE = 1V

--

3

7

Ω

ILGATE1 VCC = 12V, VLGATE1 = 2V

--

1

--

A

RLGATE1 VLGATE1 = 1V

--

2

6

Ω

VSEN1 Over-voltage (VSEN1/DACOUT)

VSEN1 Rising

112 115 120 %

FAULT Sourcing Current

OCSET1, 2 Current Source

Soft-start Current

Power Good

IOCSET

ISS

VFAULT/RT = 2.0V

VOCSET = 4.5V

10

14

-- mA

170 200 230 µA

--

28

-- µA

VOUT1 Upper Threshold

VOUT1 Under Voltage

VOUT1 Hysteresis (VSEN1/DACOUT)

PGOOD Voltage Low

VSEN1 Rising

VSEN1 Rising

Upper/Lower Threshold

VPGOOD IPGOOD = -4mA

108 -- 112 %

87

--

95 %

--

2

--

%

--

-- 0.5 V

DS9230-03 July 2001

www.richtek-ic.com.tw

3

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