RT9227A Datasheet

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RT9227A

Parameter

Linear Regulator

Regulation Voltage

Under-Voltage Level

Under-Voltage Hysteresis

Over-Current Protection

Over-Current Protection During Start-Up

Linear Controller

Regulation Voltage

Under-Voltage Level

Under-Voltage Hysteresis

PWM Controller Error Amplifier

DC Gain

PWM Controller Gate Driver

UGATE Source

UGATE Sink

LGATE Source

LGATE Sink

Protection

V

OUT1

Over-Voltage Trip

FAULT Souring Current

OCSET1 Current Source

Soft-Start Current

Power Good

V

OUT1

Upper Threshold

V

OUT1

Under Voltage

V

OUT1

Hysteresis (VSEN1 / DACOUT)

PGOOD Voltage Low

V

REG

V

REG

Preliminary

Symbol

Test Conditions

10mA

<

I

VOUT2

<

150mA

FB2 Rising

Min

Typ

Max

Units

2.437

--

--

180

--

2.500

1.875

100

230

700

2.563

2.175

--

--

--

V

V

mV

mA

mA

VSEN3 = GATE3

0

<

I

GATE3

<

20mA

FB3 Rising

1.462

--

--

1.500

1.125

100

1.538

1.305

--

V

V

mV

--

65

--

dB

R

UGATE1

VCC = 12V

VCC - V

UGATE1

= 1V

--

--

--

--

3

3

1

2

7

7

--

6

惟

惟

A

惟

R

UGATE1

V

UGATE1

= 1V

I

LGATE1

VCC = 12V, V

LGATE1

= 2V

R

LGATE1

V

LGATE1

= 1V

VSEN1 Rising

V

FAULT

= 8V

I

OCSET

I

SS

V

OCSET1

= 4.5V

V

SS

= 1V

VSEN1 Rising

VSEN1 Rising

Upper/Lower Threshold

V

PGOOD

I

PGOOD

= -4mA

112

10

170

--

115

14

200

11

120

--

230

--

%

mA

渭A

渭A

108

89

--

--

--

--

2

--

112

95

--

0.5

%

%

%

V

www.richtek.com

4

DS9227A-05 March 2007

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