RT8205A RICHTEK [Richtek Technology Corporation], RT8205A Datasheet - Page 10

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

RT8205A/B/C
Electrical Characteristics
otherwise specified)
Copyright
www.richtek.com
10
(V
Line Regulation
On-Time Pulse Width
Minimum Off-Time
Ultrasonic Mode
Frequency
Soft-Start Time
Current Limit Threshold
(Default)
ENTRIPx Source Current I
ENTRIPx Current
Temperature Coefficient
ENTRIPx Adjustment
Range
Input Supply
VIN Standby Supply
Current
VIN Shutdown Supply
Current
Quiescent Power
Consumption
SMPS Output and FB Voltage
VOUT1 Output Voltage in
Fixed Mode
VOUT2 Output Voltage in
Fixed Mode
FBx in Output Adjustable
Mode
SECFB Voltage
Output Voltage Adjust
Range
FBx Adjustable-mode
Threshold Voltage
DC Load Regulation
On Time
Soft Start
Current Sense
IN
= 12V, EN = 5V, ENTRIP1 = ENTRIP2 = 2V, No Load on VREG5, VREG3, VOUT1, VOUT2 and REF, T
©
Parameter
2012 Richtek Technology Corporation. All rights reserved.
V
t
t
t
TC
I
I
V
V
FBx
SECFB
V
V
UGATEx
LGATEx
SSx
ENTRIPx
VIN_SBY
VIN_SHDH
Symbol
LINE
OUT1
OUT2
OUTx
LOAD
IENTRIPx
Either SMPS, V
SKIPSEL = VREG5 or VREG3
Zero to Full Limit from ENTRIPx Enable
V
V
V
V
EN = 5V
V
Both SMPSs On, FBx = SKIPSEL = REF
V
V
SKIPSEL = GND
V
SKIPSEL = GND
V
V
SMPS1, SMPS2
Fixed or Adj-Mode comparator threshold
Either SMPS, SKIPSEL = GND, 0 to 5A
Either SMPS, SKIPSEL = VREG5, 0 to 5A
Either SMPS, SKIPSEL = REF, 0 to 5A
TONSEL = GND
TONSEL = REF
TONSEL = VREG5
ENTRIPx
ENTRIPx
ENTRIPx
IN
IN
OUT1
IN
IN
IN
IN
= 6V to 25V, Both SMPS Off,
= 6V to 25V, ENTRIPx = EN = GND
= 6V to 25V, FB1= GND or 5V,
= 6V to 25V, FB2 = GND or 5V,
= 6V to 25V
= 6V to 25V (RT8205C)
= 5.3V, V
= VREG5, GND−PHASEx
= 0.9V
= I
ENTRIPx
Test Conditions
IN
OUT2
= 6V to 25V
x R
V
V
V
V
V
V
= 3.5V
OUT1
OUT2
OUT1
OUT2
OUT1
OUT2
ENTRIPx
is a registered trademark of Richtek Technology Corporation.
= 5.05V
= 3.33V
= 5.05V
= 3.33V
= 5.05V
= 3.33V
(Note 5)
4.975
3.285
1.975
1895
1227
Min
1.92
999
647
895
475
200
180
9.4
0.5
0.2
25
--
--
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--
--
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2
DS8205A/B/C-06 July 2012
0.005
2105
1403
1052
1600
1110
Typ
5.05
3.33
−0.1
−1.7
−1.5
740
555
300
200
200
0.4
33
10
20
--
2
--
5
2
2
A
= 25°C, unless
5.125
3.375
2.025
2315
1221
1579
1209
Max
10.6
2.08
0.55
833
635
400
220
5.5
40
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--
--
2
--
7
--
--
--
PPM/°C
Unit
%/V
kHz
mW
mV
ms
μA
μA
μA
ns
ns
%
%
%
V
V
V
V
V
V
V