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RT8205LGQW 数据表(PDF) 7 Page - Richtek Technology Corporation

部件名 RT8205LGQW
功能描述  High Efficiency, Main Power Supply Controller for Notebook Computer
PDF  26 Pages
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制造商  RICHTEK [Richtek Technology Corporation]
网页  http://www.richtek.com
标志 RICHTEK - Richtek Technology Corporation

RT8205LGQW 数据表(HTML) 7 Page - Richtek Technology Corporation

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RT8205L/M
7
DS8205L/M-05 June 2011
www.richtek.com
To be continued
Electrical Characteristics
(VIN = 12V, VEN = 5V, VENTRIP1 = VENTRIP2 = 2V, No Load, TA = 25
°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Input Supply
VIN Standby Current
IVIN_SBY
VIN = 6V to 25V, ENTRIPx = GND
--
200
--
μA
VIN Shutdown Supply
Current
IVIN_SHDN
VIN = 6V to 25V,
ENTRIPx = EN = GND
--
20
40
μA
Quiescent Power
Consumption
PVIN
+PPVCC
Both SMPS On, VFBx = 2.1V,
SKIPSEL = REF, VOUT1 = 5V,
VOUT2 = 3.3V
(Note 5)
--
5
7
mW
SMPS Output and FB Voltage
DEM Mode
1.975
2
2.025
PWM Mode
(Note 6)
--
2
--
FBx Voltage
VFBx
Ultrasonic Mode
--
2.032
--
V
SECFB Voltage
VSECFB
1.92
2
2.08
V
Output Voltage Adjust
Range
VOUTx
SMPS1, SMPS2
2
--
5.5
V
VOUTx Discharge
Current
VOUTx = 0.5V, VENTRIPx = 0V
10
45
--
mA
On-Time
VOUT1 = 5.05V (200kHz)
1895
2105
2315
TONSEL = GND
VOUT2 = 3.33V (250kHz)
999
1110
1221
VOUT1 = 5.05V (300kHz)
1227
1403
1579
TONSEL = REF
VOUT2 = 3.33V (375kHz)
647
740
833
VOUT1 = 5.05V (400kHz)
895
1052
1209
On-Time Pulse Width
tON
TONSEL =
VREG5
VOUT2 = 3.33V (500kHz)
475
555
635
ns
Minimum Off-Time
tOFF
FBx = 1.9V
200
300
400
ns
Ultrasonic Mode
Frequency
SKIPSEL = VREG5 or VREG3
22
33
--
kHz
Soft-Start
Soft-Start Time
tSSx
Internal Soft-Start
--
2
--
ms
Current Sense
ENTRIPx Source
Current
IENTRIPx
VENTRIPx = 0.9V
9.4
10
10.6
μA
ENTRIPx Current
Temperature
Coefficient
TCIENTRIPx In Comparison with 25°C
(Note 6)
--
4700
--
ppm/°C
ENTRIPx Adjustment
Range
VENTRIPx = IENTRIPx x RENTRIPx
0.515
--
3
V
Current Limit
Threshold
GND
− PHASEx, VENTRIPx = 2V
180
200
220
mV
Zero-Current
Threshold
GND
− PHASEx in DEM
--
3
--
mV



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