RT8205A 데이터 시트보기 (PDF) - Richtek Technology

부품명

상세내역

제조사

RT8205A

High Efficiency, Main Power Supply Controllers for Notebook Computers

Richtek Technology 

RT8205A/B/C

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Current-Limit Threshold

Zero-Current Threshold

Internal Regulator and Reference

VREG5 Output Voltage

VVREG5

VREG3 Output Voltage

VREG5 Short Current

VVREG3

IVREG5

VENTRIPx = 0.5V

40

50

60 mV

GND−PHASEx VENTRIPx =1V

90 100 110 mV

VENTRIPx =2V

180 200 220 mV

SKIPSEL = VREG5 or REF,

GND−PHASEx

--

3

--

mV

VOUT1 = GND, 6V < VIN < 25V,

0 < IVREG5 < 70mA

VOUT2 = GND, 6V < VIN < 25V,

0 < IVREG3 < 70mA

VREG5 = GND, VOUT1 = GND

4.8

5

5.2

V

3.2 3.33 3.46 V

-- 175 275 mA

VREG3 Short Current

VREG5 Switchover Threshold

to VOUT1

VREG3 Switchover Threshold

to VOUT2

VREGx Switchover Equivalent

Resistance

REF Output Voltage

REF Load Regulation

REF Sink Current

IVREG3

RSW

VREF

VREG3 = GND, VOUT2 = GND

-- 175 275 mA

Rising Edge at VOUT1 Regulation

Point

4.53

4.66

4.79

V

Rising Edge at VOUT2 Regulation

Point

2.96

3.06

3.16

V

VREGx to VOUTx, 10mA

--

1.5

3

Ω

No External Load

0 < ILOAD < 50uA

REF in Regulation

1.98 2 2.02 V

--

10

--

mV

5

--

--

μA

UVLO

VREG3 UVLO Threshold

SMPSx off

--

2.5

--

V

VREG5 UVLO Threshold

Rising Edge

Falling Edge

-- 4.35 4.5

V

3.9 4.05 4.25 V

Power Good

PGOOD Threshold

PGOOD Propagation Delay

PGOOD Leakage Current

PGOOD Output Low Voltage

Fault Detection

OVP Trip Threshold

OVP Propagation Delay

UVP Trip Threshold

UVP Shutdown Blanking Time

Thermal Shutdown

VFB_OVP

tSHDN_UVP

FBx with Respect to Internal

Reference, Falling Edge,

Hysteresis = 1%

Falling Edge, 50mV Overdrive

High State, Forced to 5.5V

ISINK = 4mA

FBx with Respect to Internal

Reference

FBx with Respect to Internal

Reference

From ENTRIPx Enable

−11 −7.5 −4

%

--

10

--

μs

--

--

1

μA

--

--

0.3

V

108 111 115 %

--

10

--

μs

65

70

75

%

--

3

--

ms

Thermal Shutdown

TSHDN

Thermal Shutdown Hysteresis

--

150

--

°C

--

10

--

°C

Copyright ©2012 Richtek Technology Corporation. All rights reserved.

DS8205A/B/C-06 July 2012

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

11

Share Link: