RT8205A RICHTEK [Richtek Technology Corporation], RT8205A Datasheet - Page 11

• Manufacturer Part Number: RT8205A
• Description: High Efficiency, Main Power Supply Controllers for Notebook Computers
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Copyright
DS8205A/B/C-06 July 2012
VREG5 Short Current
VREG3 Short Current
VREG5 Switchover Threshold
to V
VREG3 Switchover Threshold
to V
VREGx Switchover Equivalent
Resistance
REF Output Voltage
REF Load Regulation
REF Sink Current
VREG3 UVLO Threshold
VREG5 UVLO Threshold
PGOOD Threshold
PGOOD Propagation Delay
PGOOD Leakage Current
PGOOD Output Low Voltage
OVP Trip Threshold
OVP Propagation Delay
UVP Trip Threshold
UVP Shutdown Blanking Time
Thermal Shutdown
Thermal Shutdown Hysteresis
Current-Limit Threshold
Zero-Current Threshold
Internal Regulator and Reference
VREG5 Output Voltage
VREG3 Output Voltage
UVLO
Power Good
Fault Detection
Thermal Shutdown
OUT1
OUT2
©
2012 Richtek Technology Corporation. All rights reserved.
Parameter
V
V
I
I
R
V
V
t
T
VREG5
VREG3
SHDN_UVP
VREG5
VREG3
SHDN
REF
FB_OVP
SW
Symbol
VREG5 = GND, V
VREG3 = GND, V
Rising Edge at V
Point
Rising Edge at V
Point
VREGx to V
No External Load
0 < I
REF in Regulation
SMPSx off
Rising Edge
Falling Edge
FBx with Respect to Internal
Reference, Falling Edge,
Hysteresis = 1%
Falling Edge, 50mV Overdrive
High State, Forced to 5.5V
I
FBx with Respect to Internal
Reference
FBx with Respect to Internal
Reference
From ENTRIPx Enable
GND−PHASEx
SKIPSEL = VREG5 or REF,
GND−PHASEx
V
0 < I
V
0 < I
SINK
OUT1
OUT2
LOAD
VREG5
VREG3
= 4mA
= GND, 6V < V
= GND, 6V < V
Test Conditions
< 50uA
< 70mA
< 70mA
OUTx
V
V
V
OUT1
OUT2
, 10mA
ENTRIPx
ENTRIPx
ENTRIPx
OUT1
OUT2
is a registered trademark of Richtek Technology Corporation.
IN
IN
Regulation
Regulation
= GND
= GND
< 25V,
< 25V,
= 0.5V
=1V
=2V
4.53
2.96
1.98
Min
180
108
−11
4.8
3.2
3.9
40
90
65
--
--
--
--
--
5
--
--
--
--
--
--
--
--
--
RT8205A/B/C
3.33
4.66
3.06
4.35
4.05
−7.5
Typ
100
200
175
175
150
111
1.5
2.5
50
10
10
10
70
10
--
--
3
5
2
--
3
www.richtek.com
Max
3.46
4.79
3.16
2.02
4.25
220
275
275
110
115
5.2
4.5
0.3
60
−4
75
--
--
--
--
--
--
--
--
--
3
1
Unit
mV
mV
mV
mV
mA
mA
mV
ms
μA
μA
°C
°C
μs
μs
%
%
%
Ω
V
V
V
V
V
V
V
V
V
11